Cold Formed Perforated Galvanized C Channel Inquiry | Roof Purlin Hole and Section Drawing

• Grade

  Galvanized Steel, Q235/Q235B/Q345/SS400/A36/ST-37
  Invoicing

  By Theoretical Weight
• Shape

  C Channel
  Standard

  GB
• Tolerance

  ±3%
  Alloy Or Not

  Non-Alloy
• Application

  construction supporting system, Steelmaking Industry Metallurgy
  Delivery Time

  8 ~ 14 days
• Perforated Or Not

  Is Perforated
  Processing Service

  Welding, Punching, Cutting
• Model Number

  5,6.3, 6.5,8# to 40#
  Length

  1-12m or as requirement
• Technique

  Cold Bending, perforated
  MOQ

  1 ton
• Price term

  FOB CFR CIF
  Surface treatment

  galvanized or as customer request
• Dimensions

  50*37*4.5 - 400*104*14.5
  Payment term

  T/T / LC at sight

Provide the actual C profile and perforation drawing before selecting a roof purlin.

Section definition

The detail identifies cold bent C channel with several steel grade references. Select one actual designation and clarify the units and dimension roles of the listed section range rather than deriving geometry from model numbers alone.

Hole and length

Perforated is stated without hole size, spacing or connection details. Agree actual hole layout, edge distances, finished length and compatible fixing geometry together with the required galvanized surface and coating inspection.

• Actual steel designation
• C section drawing and units
• Hole size and spacing
• Finished length and fixing
• Zinc and roof design inspection

Project acceptance

The application mentions construction support but provides no roof calculation. Request actual material and installation records; purlin wording establishes no span capacity, connection approval, corrosion lifetime or certified structural performance.