China Steel Purlin for Construction

Hot sale Purlin for Construction Material Zinc Galvanized

1. product description

Light-gauge cold-formed steel roof purlins replace heavier hot-rolled steel angle and channel sections.

A purlin is a secondary structural member that spans between the primary/main steel frame to support the roof cladding. The purlin transfers load from the roof cladding to the primary steel rafters. Similarly, a side rail is a secondary structural member that spans between the primary/main steel frame to support the wall cladding and transfer load from the wall cladding to the primary steel columns. Both purlins and side rails are used to provide restraint to the primary steel frame members. Light gauge cold-formed steel roof purlins are used on a wide range of building types including retail and leisure, industrial, warehouses and distribution, healthcare and education.

2. Standard Size

C purlin
H(mm)B(mm)B(mm)C(mm)T(mm)
C100
1005050202.0-3.0
C140
1405050202.0-3.0
C160
1605050202.0-3.0
C160
1606060202.0-3.0
C160
1607070202.0-3.0
C180
1806060202.0-3.0
C180
1807070202.0-3.0
C200
2007070202.0-3.0
C220
2207070202.0-3.0
C220
2207575202.0-3.0
C280
2808080202.0-3.0
C300
3008080202.0-3.0

Z purlin
H(mm)B(mm)B(mm)C(mm)T(mm)
Z100
1005550202.0-3.0
Z120
1205550202.0-3.0
Z140
1405550202.0-3.0
Z150
1506761182.0-3.0
Z160
1606761202.0-3.0
Z180
1806761202.0-3.0
Z200
2006761202.0-3.0
Z250
2507872202.0-3.0
Z280
2807872202.0-3.0
Z300
3007872202.5-3.0

3. Cold Roll Forming
--- Cold-formed steel roof purlins and side rails are manufactured from pre-galvanised steel strip, in the form of coils, which have been slit to the desired width from the parent or "wide coil" supplied from the mills.
--- The purlin is formed gradually by feeding the strip continuously through successive pairs of rolls, which act as male and female dies. Each pair of rolls progressively forms the strip until the finished profile is produced. For example, five to eight "stages" or "passes" will be needed to form a lipped Z purlin, depending on the thickness of the material. More complicated profiles will require 15 or more passes.
--- The strip is pre-pierced and cut to length in-line, prior to roll-forming.
--- The principal advantage of cold roll-forming, compared with other methods of fabrication, is the high production capacity achieved. Sections produced by cold roll-forming are essentially uniform in cross section and can be manufactured to very close dimensional tolerances.
--- In building uses, the most common and simplest of profiles are the lipped Z and C sections - both defined by a central vertical web joined to horizontal flanges at either end. Additional lips are included because unstiffened, wide, thin plates are unable to resist significant compression and the flanges become inefficient.
--- Z sections are usually installed with the top flange pointing up the roof slope so that the load is applied through the shear centre and serious twisting of the sections does not occur.
--- Cold-rolled steel purlins are manufactured from hot-dipped galvanised steel, generally with a yield strength of 450N/mm².
4. Advantages
• They are cost effective in comparison to heavier, hot-rolled steel angle and channel profiles
• They have a high strength-to-weight ratio
• Long spans of up to 15m are possible
• Pre-galvanised sections provide longer-term durability
• Material is delivered to site pre-punched and cut to length
• They are lightweight and are easy to handle and construct
• Steel is 100% recyclable.
5. Package
6.Our Projects

7. Weifang Tailai steel structure Co.Ltd. one of the market leader for steel structure building business in China. more than 14year's experience .
----Weifang tailai is a professional steel structure enterprise, including design, manufacture, and installation.
----Weifang tailai haveemployees over 180, 10 A level designer ,8 B grade designer and 20 engineer .the annual output of 100,000 tons, annual construction output 500,000 square meters.

----Weifang tailai has the most advanced production lines for steel structure, color steel corrugated sheet, H-section beam, C and Z-beam, roof and wall tiles, ect.
---Weifang tailai also have many advances equipment like CNC Model Flame Cutting Machine, CNC Drilling Machine, Submerged Arc Welding Machine, Correcting Machine, and more.
8. contact information

Company:
Weifang Tailai Steel Structure Engineering Co.,Ltd.
contact:
Debbie guo
Moblile:
+8618263608707
mail :

Address:
No.3430 Huangshan Rd.Linqu County, Shandong Province, P.R.China