steve/channel

Light C channel (U channel), constant thickness, square corners, any size and length.

v1.0.0 Latest STEVE MIT 0

Open in STEVE

Isometric

Parameters

Preset30 sizes

Width (web)3–1000 mm

Height (flanges)2–1000 mm

Thickness0.3–50 mm

Web and flanges; must leave an opening: 2 x thickness < width, thickness < height.

Length1–12000 mm

Material4 options

unspecified (no material assigned), aluminium, steel or 1.4301 stainless.

Defaults built

part.py 36 lines · Python · STEVE runtime · checked

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"""C channel (U channel) of constant thickness with square corners, any size, thickness and length: the light channel

as step.parts' published models draw it.

Section: web `width` along X at the bottom, flanges `height` along Y (overall), thickness `thickness` throughout,

centred on the origin and extruded along +Z by `length`; the opening faces +Y.

"""

from steve import Model

width = 30 # mm Overall width (web)

height = 15 # mm Overall height (flanges)

thickness = 1.5 # mm Thickness

length = 1000 # mm Length

material = "unspecified" # Material

# material choice: (STEVE material library id, appearance colour); the generic channels' models name no material

MATERIALS = {

"unspecified": (None, None),

"aluminum": ("aluminum-generic", "#cfd2d6"),

"steel": ("steel-generic", "#7d8085"),

"stainless-304": ("stainless-304", "#c9ccd0"),

}

if not (2 * thickness < width and thickness < height):

raise ValueError("The thickness must leave an opening: 2 x thickness < width and thickness < height.")

x, y, t = width / 2, height / 2, thickness

material_id, colour = MATERIALS[material]

model = Model()

with model.sketch("section", on="XY", name="Section") as sk:

sk.polyline("outline", [(-x, y), (-x, -y), (x, -y), (x, y), (x - t, y), (x - t, -y + t), (-x + t, -y + t),

(-x + t, y)])

model.extrude("channel", "section", distance=length, name="Channel")

if material_id:

model.material(material_id, color=colour)

result = model.result()

"""C channel (U channel) of constant thickness with square corners, any size, thickness and length: the light channel
as step.parts' published models draw it.

Section: web `width` along X at the bottom, flanges `height` along Y (overall), thickness `thickness` throughout,
centred on the origin and extruded along +Z by `length`; the opening faces +Y.
"""
from steve import Model

width = 30  # mm Overall width (web)
height = 15  # mm Overall height (flanges)
thickness = 1.5  # mm Thickness
length = 1000  # mm Length
material = "unspecified"  # Material

# material choice: (STEVE material library id, appearance colour); the generic channels' models name no material
MATERIALS = {
    "unspecified": (None, None),
    "aluminum": ("aluminum-generic", "#cfd2d6"),
    "steel": ("steel-generic", "#7d8085"),
    "stainless-304": ("stainless-304", "#c9ccd0"),
}

if not (2 * thickness < width and thickness < height):
    raise ValueError("The thickness must leave an opening: 2 x thickness < width and thickness < height.")
x, y, t = width / 2, height / 2, thickness
material_id, colour = MATERIALS[material]

model = Model()
with model.sketch("section", on="XY", name="Section") as sk:
    sk.polyline("outline", [(-x, y), (-x, -y), (x, -y), (x, y), (x - t, y), (x - t, -y + t), (-x + t, -y + t),
                            (-x + t, y)])
model.extrude("channel", "section", distance=length, name="Channel")
if material_id:
    model.material(material_id, color=colour)
result = model.result()

pypart.toml 262 lines · TOML

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name = "steve/channel"

version = "1.0.0"

runtime = "steve"

license = "MIT"

summary = "Light C channel (U channel), constant thickness, square corners, any size and length."

description = """A light C (U) channel of constant thickness with square corners: web width, flange height, thickness \

and length free. Presets: the catalogue's generic channels 20 x 10 x 1.5, 30 x 15 x 1.5 and 40 x 20 x 2, measured from \

step.parts' published models (MIT); no standard covers them (DIN 1026 channels are tapered).

Web along X at the bottom, flanges up (+Y), centred on the origin, extruded along +Z."""

tags = ["stock", "channel", "c-channel", "u-channel", "profile", "metric"]

[parameters.width]

type = "number"

default = 30

min = 3

max = 1000

unit = "mm"

label = "Width (web)"

[parameters.height]

type = "number"

default = 15

min = 2

max = 1000

unit = "mm"

label = "Height (flanges)"

[parameters.thickness]

type = "number"

default = 1.5

min = 0.3

max = 50

unit = "mm"

label = "Thickness"

description = "Web and flanges; must leave an opening: 2 x thickness < width, thickness < height."

[parameters.length]

type = "number"

default = 1000

min = 1

max = 12000

unit = "mm"

label = "Length"

[parameters.material]

type = "choice"

default = "unspecified"

choices = ["unspecified", "aluminum", "steel", "stainless-304"]

label = "Material"

description = "unspecified (no material assigned), aluminium, steel or 1.4301 stainless."

[[presets]]

id = "C20x10x1.5-100"

title = "C channel 20 × 10 × 1.5, 100 mm"

params = { width = 20, height = 10, thickness = 1.5, length = 100 }

aliases = ["U channel 20x10x1.5 100 mm", "C channel 20x10 100 mm", "20x10 channel 100"]

standard = "step.parts generic channel model"

[[presets]]

id = "C20x10x1.5-150"

title = "C channel 20 × 10 × 1.5, 150 mm"

params = { width = 20, height = 10, thickness = 1.5, length = 150 }

aliases = ["U channel 20x10x1.5 150 mm", "C channel 20x10 150 mm", "20x10 channel 150"]

standard = "step.parts generic channel model"

[[presets]]

id = "C20x10x1.5-200"

title = "C channel 20 × 10 × 1.5, 200 mm"

params = { width = 20, height = 10, thickness = 1.5, length = 200 }

aliases = ["U channel 20x10x1.5 200 mm", "C channel 20x10 200 mm", "20x10 channel 200"]

standard = "step.parts generic channel model"

[[presets]]

id = "C20x10x1.5-250"

title = "C channel 20 × 10 × 1.5, 250 mm"

params = { width = 20, height = 10, thickness = 1.5, length = 250 }

aliases = ["U channel 20x10x1.5 250 mm", "C channel 20x10 250 mm", "20x10 channel 250"]

standard = "step.parts generic channel model"

[[presets]]

id = "C20x10x1.5-300"

title = "C channel 20 × 10 × 1.5, 300 mm"

params = { width = 20, height = 10, thickness = 1.5, length = 300 }

aliases = ["U channel 20x10x1.5 300 mm", "C channel 20x10 300 mm", "20x10 channel 300"]

standard = "step.parts generic channel model"

[[presets]]

id = "C20x10x1.5-400"

title = "C channel 20 × 10 × 1.5, 400 mm"

params = { width = 20, height = 10, thickness = 1.5, length = 400 }

aliases = ["U channel 20x10x1.5 400 mm", "C channel 20x10 400 mm", "20x10 channel 400"]

standard = "step.parts generic channel model"

[[presets]]

id = "C20x10x1.5-500"

title = "C channel 20 × 10 × 1.5, 500 mm"

params = { width = 20, height = 10, thickness = 1.5, length = 500 }

aliases = ["U channel 20x10x1.5 500 mm", "C channel 20x10 500 mm", "20x10 channel 500"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C20x10x1.5-600"

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title = "C channel 20 × 10 × 1.5, 600 mm"

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params = { width = 20, height = 10, thickness = 1.5, length = 600 }

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aliases = ["U channel 20x10x1.5 600 mm", "C channel 20x10 600 mm", "20x10 channel 600"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C20x10x1.5-750"

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title = "C channel 20 × 10 × 1.5, 750 mm"

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params = { width = 20, height = 10, thickness = 1.5, length = 750 }

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aliases = ["U channel 20x10x1.5 750 mm", "C channel 20x10 750 mm", "20x10 channel 750"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C20x10x1.5-1000"

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title = "C channel 20 × 10 × 1.5, 1000 mm"

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params = { width = 20, height = 10, thickness = 1.5, length = 1000 }

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aliases = ["U channel 20x10x1.5 1000 mm", "C channel 20x10 1000 mm", "20x10 channel 1000"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C30x15x1.5-100"

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title = "C channel 30 × 15 × 1.5, 100 mm"

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params = { width = 30, height = 15, thickness = 1.5, length = 100 }

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aliases = ["U channel 30x15x1.5 100 mm", "C channel 30x15 100 mm", "30x15 channel 100"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C30x15x1.5-150"

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title = "C channel 30 × 15 × 1.5, 150 mm"

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params = { width = 30, height = 15, thickness = 1.5, length = 150 }

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aliases = ["U channel 30x15x1.5 150 mm", "C channel 30x15 150 mm", "30x15 channel 150"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C30x15x1.5-200"

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title = "C channel 30 × 15 × 1.5, 200 mm"

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params = { width = 30, height = 15, thickness = 1.5, length = 200 }

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aliases = ["U channel 30x15x1.5 200 mm", "C channel 30x15 200 mm", "30x15 channel 200"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C30x15x1.5-250"

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title = "C channel 30 × 15 × 1.5, 250 mm"

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params = { width = 30, height = 15, thickness = 1.5, length = 250 }

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aliases = ["U channel 30x15x1.5 250 mm", "C channel 30x15 250 mm", "30x15 channel 250"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C30x15x1.5-300"

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title = "C channel 30 × 15 × 1.5, 300 mm"

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params = { width = 30, height = 15, thickness = 1.5, length = 300 }

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aliases = ["U channel 30x15x1.5 300 mm", "C channel 30x15 300 mm", "30x15 channel 300"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C30x15x1.5-400"

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title = "C channel 30 × 15 × 1.5, 400 mm"

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params = { width = 30, height = 15, thickness = 1.5, length = 400 }

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aliases = ["U channel 30x15x1.5 400 mm", "C channel 30x15 400 mm", "30x15 channel 400"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C30x15x1.5-500"

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title = "C channel 30 × 15 × 1.5, 500 mm"

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params = { width = 30, height = 15, thickness = 1.5, length = 500 }

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aliases = ["U channel 30x15x1.5 500 mm", "C channel 30x15 500 mm", "30x15 channel 500"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C30x15x1.5-600"

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title = "C channel 30 × 15 × 1.5, 600 mm"

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params = { width = 30, height = 15, thickness = 1.5, length = 600 }

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aliases = ["U channel 30x15x1.5 600 mm", "C channel 30x15 600 mm", "30x15 channel 600"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C30x15x1.5-750"

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title = "C channel 30 × 15 × 1.5, 750 mm"

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params = { width = 30, height = 15, thickness = 1.5, length = 750 }

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aliases = ["U channel 30x15x1.5 750 mm", "C channel 30x15 750 mm", "30x15 channel 750"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C30x15x1.5-1000"

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title = "C channel 30 × 15 × 1.5, 1000 mm"

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params = { width = 30, height = 15, thickness = 1.5, length = 1000 }

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aliases = ["U channel 30x15x1.5 1000 mm", "C channel 30x15 1000 mm", "30x15 channel 1000"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C40x20x2.0-100"

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title = "C channel 40 × 20 × 2.0, 100 mm"

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params = { width = 40, height = 20, thickness = 2, length = 100 }

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aliases = ["U channel 40x20x2.0 100 mm", "C channel 40x20 100 mm", "40x20 channel 100"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C40x20x2.0-150"

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title = "C channel 40 × 20 × 2.0, 150 mm"

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params = { width = 40, height = 20, thickness = 2, length = 150 }

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aliases = ["U channel 40x20x2.0 150 mm", "C channel 40x20 150 mm", "40x20 channel 150"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C40x20x2.0-200"

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title = "C channel 40 × 20 × 2.0, 200 mm"

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params = { width = 40, height = 20, thickness = 2, length = 200 }

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aliases = ["U channel 40x20x2.0 200 mm", "C channel 40x20 200 mm", "40x20 channel 200"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C40x20x2.0-250"

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title = "C channel 40 × 20 × 2.0, 250 mm"

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params = { width = 40, height = 20, thickness = 2, length = 250 }

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aliases = ["U channel 40x20x2.0 250 mm", "C channel 40x20 250 mm", "40x20 channel 250"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C40x20x2.0-300"

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title = "C channel 40 × 20 × 2.0, 300 mm"

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params = { width = 40, height = 20, thickness = 2, length = 300 }

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aliases = ["U channel 40x20x2.0 300 mm", "C channel 40x20 300 mm", "40x20 channel 300"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C40x20x2.0-400"

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title = "C channel 40 × 20 × 2.0, 400 mm"

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params = { width = 40, height = 20, thickness = 2, length = 400 }

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aliases = ["U channel 40x20x2.0 400 mm", "C channel 40x20 400 mm", "40x20 channel 400"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C40x20x2.0-500"

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title = "C channel 40 × 20 × 2.0, 500 mm"

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params = { width = 40, height = 20, thickness = 2, length = 500 }

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aliases = ["U channel 40x20x2.0 500 mm", "C channel 40x20 500 mm", "40x20 channel 500"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C40x20x2.0-600"

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title = "C channel 40 × 20 × 2.0, 600 mm"

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params = { width = 40, height = 20, thickness = 2, length = 600 }

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aliases = ["U channel 40x20x2.0 600 mm", "C channel 40x20 600 mm", "40x20 channel 600"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C40x20x2.0-750"

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title = "C channel 40 × 20 × 2.0, 750 mm"

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params = { width = 40, height = 20, thickness = 2, length = 750 }

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aliases = ["U channel 40x20x2.0 750 mm", "C channel 40x20 750 mm", "40x20 channel 750"]

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standard = "step.parts generic channel model"

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[[presets]]

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id = "C40x20x2.0-1000"

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title = "C channel 40 × 20 × 2.0, 1000 mm"

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params = { width = 40, height = 20, thickness = 2, length = 1000 }

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aliases = ["U channel 40x20x2.0 1000 mm", "C channel 40x20 1000 mm", "40x20 channel 1000"]

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standard = "step.parts generic channel model"

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name = "steve/channel"
version = "1.0.0"
runtime = "steve"
license = "MIT"
summary = "Light C channel (U channel), constant thickness, square corners, any size and length."
description = """A light C (U) channel of constant thickness with square corners: web width, flange height, thickness \
and length free. Presets: the catalogue's generic channels 20 x 10 x 1.5, 30 x 15 x 1.5 and 40 x 20 x 2, measured from \
step.parts' published models (MIT); no standard covers them (DIN 1026 channels are tapered).

Web along X at the bottom, flanges up (+Y), centred on the origin, extruded along +Z."""
tags = ["stock", "channel", "c-channel", "u-channel", "profile", "metric"]

[parameters.width]
type = "number"
default = 30
min = 3
max = 1000
unit = "mm"
label = "Width (web)"

[parameters.height]
type = "number"
default = 15
min = 2
max = 1000
unit = "mm"
label = "Height (flanges)"

[parameters.thickness]
type = "number"
default = 1.5
min = 0.3
max = 50
unit = "mm"
label = "Thickness"
description = "Web and flanges; must leave an opening: 2 x thickness < width, thickness < height."

[parameters.length]
type = "number"
default = 1000
min = 1
max = 12000
unit = "mm"
label = "Length"

[parameters.material]
type = "choice"
default = "unspecified"
choices = ["unspecified", "aluminum", "steel", "stainless-304"]
label = "Material"
description = "unspecified (no material assigned), aluminium, steel or 1.4301 stainless."

[[presets]]
id = "C20x10x1.5-100"
title = "C channel 20 × 10 × 1.5, 100 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 100 }
aliases = ["U channel 20x10x1.5 100 mm", "C channel 20x10 100 mm", "20x10 channel 100"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-150"
title = "C channel 20 × 10 × 1.5, 150 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 150 }
aliases = ["U channel 20x10x1.5 150 mm", "C channel 20x10 150 mm", "20x10 channel 150"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-200"
title = "C channel 20 × 10 × 1.5, 200 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 200 }
aliases = ["U channel 20x10x1.5 200 mm", "C channel 20x10 200 mm", "20x10 channel 200"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-250"
title = "C channel 20 × 10 × 1.5, 250 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 250 }
aliases = ["U channel 20x10x1.5 250 mm", "C channel 20x10 250 mm", "20x10 channel 250"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-300"
title = "C channel 20 × 10 × 1.5, 300 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 300 }
aliases = ["U channel 20x10x1.5 300 mm", "C channel 20x10 300 mm", "20x10 channel 300"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-400"
title = "C channel 20 × 10 × 1.5, 400 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 400 }
aliases = ["U channel 20x10x1.5 400 mm", "C channel 20x10 400 mm", "20x10 channel 400"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-500"
title = "C channel 20 × 10 × 1.5, 500 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 500 }
aliases = ["U channel 20x10x1.5 500 mm", "C channel 20x10 500 mm", "20x10 channel 500"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-600"
title = "C channel 20 × 10 × 1.5, 600 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 600 }
aliases = ["U channel 20x10x1.5 600 mm", "C channel 20x10 600 mm", "20x10 channel 600"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-750"
title = "C channel 20 × 10 × 1.5, 750 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 750 }
aliases = ["U channel 20x10x1.5 750 mm", "C channel 20x10 750 mm", "20x10 channel 750"]
standard = "step.parts generic channel model"

[[presets]]
id = "C20x10x1.5-1000"
title = "C channel 20 × 10 × 1.5, 1000 mm"
params = { width = 20, height = 10, thickness = 1.5, length = 1000 }
aliases = ["U channel 20x10x1.5 1000 mm", "C channel 20x10 1000 mm", "20x10 channel 1000"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-100"
title = "C channel 30 × 15 × 1.5, 100 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 100 }
aliases = ["U channel 30x15x1.5 100 mm", "C channel 30x15 100 mm", "30x15 channel 100"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-150"
title = "C channel 30 × 15 × 1.5, 150 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 150 }
aliases = ["U channel 30x15x1.5 150 mm", "C channel 30x15 150 mm", "30x15 channel 150"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-200"
title = "C channel 30 × 15 × 1.5, 200 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 200 }
aliases = ["U channel 30x15x1.5 200 mm", "C channel 30x15 200 mm", "30x15 channel 200"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-250"
title = "C channel 30 × 15 × 1.5, 250 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 250 }
aliases = ["U channel 30x15x1.5 250 mm", "C channel 30x15 250 mm", "30x15 channel 250"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-300"
title = "C channel 30 × 15 × 1.5, 300 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 300 }
aliases = ["U channel 30x15x1.5 300 mm", "C channel 30x15 300 mm", "30x15 channel 300"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-400"
title = "C channel 30 × 15 × 1.5, 400 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 400 }
aliases = ["U channel 30x15x1.5 400 mm", "C channel 30x15 400 mm", "30x15 channel 400"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-500"
title = "C channel 30 × 15 × 1.5, 500 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 500 }
aliases = ["U channel 30x15x1.5 500 mm", "C channel 30x15 500 mm", "30x15 channel 500"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-600"
title = "C channel 30 × 15 × 1.5, 600 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 600 }
aliases = ["U channel 30x15x1.5 600 mm", "C channel 30x15 600 mm", "30x15 channel 600"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-750"
title = "C channel 30 × 15 × 1.5, 750 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 750 }
aliases = ["U channel 30x15x1.5 750 mm", "C channel 30x15 750 mm", "30x15 channel 750"]
standard = "step.parts generic channel model"

[[presets]]
id = "C30x15x1.5-1000"
title = "C channel 30 × 15 × 1.5, 1000 mm"
params = { width = 30, height = 15, thickness = 1.5, length = 1000 }
aliases = ["U channel 30x15x1.5 1000 mm", "C channel 30x15 1000 mm", "30x15 channel 1000"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-100"
title = "C channel 40 × 20 × 2.0, 100 mm"
params = { width = 40, height = 20, thickness = 2, length = 100 }
aliases = ["U channel 40x20x2.0 100 mm", "C channel 40x20 100 mm", "40x20 channel 100"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-150"
title = "C channel 40 × 20 × 2.0, 150 mm"
params = { width = 40, height = 20, thickness = 2, length = 150 }
aliases = ["U channel 40x20x2.0 150 mm", "C channel 40x20 150 mm", "40x20 channel 150"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-200"
title = "C channel 40 × 20 × 2.0, 200 mm"
params = { width = 40, height = 20, thickness = 2, length = 200 }
aliases = ["U channel 40x20x2.0 200 mm", "C channel 40x20 200 mm", "40x20 channel 200"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-250"
title = "C channel 40 × 20 × 2.0, 250 mm"
params = { width = 40, height = 20, thickness = 2, length = 250 }
aliases = ["U channel 40x20x2.0 250 mm", "C channel 40x20 250 mm", "40x20 channel 250"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-300"
title = "C channel 40 × 20 × 2.0, 300 mm"
params = { width = 40, height = 20, thickness = 2, length = 300 }
aliases = ["U channel 40x20x2.0 300 mm", "C channel 40x20 300 mm", "40x20 channel 300"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-400"
title = "C channel 40 × 20 × 2.0, 400 mm"
params = { width = 40, height = 20, thickness = 2, length = 400 }
aliases = ["U channel 40x20x2.0 400 mm", "C channel 40x20 400 mm", "40x20 channel 400"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-500"
title = "C channel 40 × 20 × 2.0, 500 mm"
params = { width = 40, height = 20, thickness = 2, length = 500 }
aliases = ["U channel 40x20x2.0 500 mm", "C channel 40x20 500 mm", "40x20 channel 500"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-600"
title = "C channel 40 × 20 × 2.0, 600 mm"
params = { width = 40, height = 20, thickness = 2, length = 600 }
aliases = ["U channel 40x20x2.0 600 mm", "C channel 40x20 600 mm", "40x20 channel 600"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-750"
title = "C channel 40 × 20 × 2.0, 750 mm"
params = { width = 40, height = 20, thickness = 2, length = 750 }
aliases = ["U channel 40x20x2.0 750 mm", "C channel 40x20 750 mm", "40x20 channel 750"]
standard = "step.parts generic channel model"

[[presets]]
id = "C40x20x2.0-1000"
title = "C channel 40 × 20 × 2.0, 1000 mm"
params = { width = 40, height = 20, thickness = 2, length = 1000 }
aliases = ["U channel 40x20x2.0 1000 mm", "C channel 40x20 1000 mm", "40x20 channel 1000"]
standard = "step.parts generic channel model"

README.md 43 lines · Markdown

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C channel (light, square corners)

A light C (U) channel of constant thickness with square corners, at any width, height, thickness and length.

Geometry

Web width along X at the bottom, flanges height along Y (overall), web and flanges thickness thick, centred on the origin and extruded along +Z by length; the opening faces +Y. Section area = width × height − (width − 2t) × (height − t).

Parameters

Parameter	Meaning
`width`	overall width (web), mm
`height`	overall height (flanges), mm
`thickness`	web and flange thickness, mm
`length`	mm
`material`	`unspecified` (no material assigned), `aluminum`, `steel`, `stainless-304`

Sources

No standard covers these light channels (EN 755-9 and DIN 9714 give tolerances only; DIN 1026 channels are tapered) and they name no maker. The presets' geometry was measured from the published reference models below: each model's mid-length section (overall width and height, web and flange thickness; constant, square corners), and every preset is checked against its own model: bounding box within 0.05 mm (0.5 % over 100 mm), volume within 2 %, section area within 2 % and section outline within 0.1 mm.

Channel	Thickness
20 × 10	1.5
30 × 15	1.5
40 × 20	2.0

step.parts, c_channel_size<w>x<h>_l<length> (https://www.step.parts, repository https://github.com/earthtojake/step.parts, commit c6113328, catalog/step/): step.parts' own "analytic simplified" models, original project material under the repository's MIT licence (© 2026 earthtojake). They name no material, so the presets have material = "unspecified".

Simplifications (the models'): square corners inside and out.

Preset list: from the step.parts catalogue (MIT), see library/NOTICE.md.

# C channel (light, square corners)

A light C (U) channel of constant thickness with square corners, at any width, height, thickness and length.

## Geometry

Web `width` along X at the bottom, flanges `height` along Y (overall), web and flanges `thickness` thick, centred on
the origin and extruded along +Z by `length`; the opening faces +Y. Section area = width × height − (width − 2t) ×
(height − t).

## Parameters

| Parameter | Meaning |
|---|---|
| `width` | overall width (web), mm |
| `height` | overall height (flanges), mm |
| `thickness` | web and flange thickness, mm |
| `length` | mm |
| `material` | `unspecified` (no material assigned), `aluminum`, `steel`, `stainless-304` |

## Sources

No standard covers these light channels (EN 755-9 and DIN 9714 give tolerances only; DIN 1026 channels are tapered)
and they name no maker. **The presets' geometry was measured from the published reference models** below: each
model's mid-length section (overall width and height, web and flange thickness; constant, square corners), and every
preset is checked against its own model: bounding box within 0.05 mm (0.5 % over 100 mm), volume within 2 %, section
area within 2 % and section outline within 0.1 mm.

| Channel | Thickness |
|---|---|
| 20 × 10 | 1.5 |
| 30 × 15 | 1.5 |
| 40 × 20 | 2.0 |

- **step.parts**, `c_channel_size<w>x<h>_l<length>` (https://www.step.parts, repository
  https://github.com/earthtojake/step.parts, commit c6113328, `catalog/step/`): step.parts' own "analytic simplified"
  models, original project material under the repository's **MIT** licence (© 2026 earthtojake). They name no
  material, so the presets have `material = "unspecified"`.

Simplifications (the models'): square corners inside and out.

Preset list: from the step.parts catalogue (MIT), see `library/NOTICE.md`.

Use this part

STEVE

Open in STEVE

Open it in STEVE The STEVE runtime runs in STEVE: open the part there, or download the code and bundle.

Get the code

curl -o part.py "https://pythonparts.org/p/steve/channel/v/1.0.0/raw/part.py"

Raw files, bundle and API

part.py
pypart.toml
README.md
bundle.tar.gzthe package, as published

curl "https://pythonparts.org/api/v1/parts/steve/channel/1.0.0"

The version's JSON (parameters, presets, files); add /build?name=value for a build at other values.

About this part

steve58 parts

Profile

License: MIT

Permissive: use, change and sell it; keep the copyright notice.

Runtime: STEVE
Built with: CadQuery 2.9.0.dev0
Published: Nov 1, 2026
Downloads: 0
Builds: 0
Stars: 0
Bundle: cec41d9fcf1b…

#stock #channel #c-channel #u-channel #profile #metric

Checks

PassedImports: steve

Every published part passes our checks before it’s listed. It is still code: read it before you use it.

Request a removal A copyright notice, or a trademark, confidential design, safety, malicious code or other problem. Report an illegal or prohibited item

A light C (U) channel of constant thickness with square corners: web width, flange height, thickness and length free. Presets: the catalogue's generic channels 20 x 10 x 1.5, 30 x 15 x 1.5 and 40 x 20 x 2, measured from step.parts' published models (MIT); no standard covers them (DIN 1026 channels are tapered). Web along X at the bottom, flanges up (+Y), centred on the origin, extruded along +Z.

C channel (light, square corners)

A light C (U) channel of constant thickness with square corners, at any width, height, thickness and length.

Geometry

Parameters

Parameter	Meaning
`width`	overall width (web), mm
`height`	overall height (flanges), mm
`thickness`	web and flange thickness, mm
`length`	mm
`material`	`unspecified` (no material assigned), `aluminum`, `steel`, `stainless-304`

Sources

Channel	Thickness
20 × 10	1.5
30 × 15	1.5
40 × 20	2.0

step.parts, c_channel_size<w>x<h>_l<length> (https://www.step.parts, repository https://github.com/earthtojake/step.parts, commit c6113328, catalog/step/): step.parts' own "analytic simplified" models, original project material under the repository's MIT licence (© 2026 earthtojake). They name no material, so the presets have material = "unspecified".

Simplifications (the models'): square corners inside and out.

Preset list: from the step.parts catalogue (MIT), see library/NOTICE.md.