Product Description
Steel purlins are secondary load-bearing members used to support roof panels and wall cladding in steel structures. They are manufactured using automatic cold roll forming lines from galvanized coils (Q235B / Q355B / G550). C-section purlins are suitable for simply supported spans, while Z-section purlins allow continuous lapping for greater load capacity and deflection control. Surface treatment includes hot-dip galvanizing or anti-corrosion painting, ensuring service life of over 20 years in industrial environments.
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Item |
Specification |
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Material |
Galvanized C&Z steel Purlins |
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Thickness |
1 - 3mm |
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High |
80 mm ~ 300 mm |
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Length |
Customized, max. 4 - 9 m |
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Zinc Coating |
60 - 275 g/m² (double-sided hot-dip galvanized) |
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Material standards |
Q235, Q345, Q355, G550 |
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Production Capacity |
100,000 meters / month |
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Customization |
Specifications available as per customer’s request |
Product Features
Steel purlins mainly including C-type, Z-type and U-type profiles. They are made by cold forming process with precise size and stable structure. The products feature high strength, light weight and great load-bearing capacity. With hot-dip galvanized surface treatment, they have excellent corrosion resistance and long service life. They are easy to cut, transport and install, saving construction time and cost. Widely used for roof and wall support of steel structure warehouses, workshops, greenhouses and other buildings.
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type Steel Purlin
- Z-shaped cross-section with high load-bearing capacity and stability
- Two parallel flanges for easy connection and installation
- High-strength steel with excellent bending, shearing and compression resistance
- Specially treated surface for good corrosion resistance
- Lightweight and adjustable length for easy transportation and installation
C-type Steel Purlin
- C-shaped cross-section with thin wall and light self-weight
- Excellent section performance and high strength
- Smooth surface with high dimensional accuracy
- Diverse material options (e.g., Q195-345)
Widely used in purlins and wall beams of steel structures
Application
1.Roof purlins and wall girts in steel workshops and warehouses
2.Frame structure for greenhouses and agricultural buildings
3.Support members for solar panel mounting systems
4.Industrial plants and logistics centers
5.Temporary shelters and prefabricated houses
Get A Quote
To receive your personalized quote, simply share the following details:
- Project Information
A . Country & city (for shipping calculation and local standards)?
B. Project type:Warehouse?Workshop ? Agricultural building? Commercial?
C.Roof or wall application? (or both)
- Purlin Profile & Dimensions
A. Profile type: C purlin or Z purlin? Both (specify quantities each)
B. Height (mm): 80 / 100 / 120 / 150 / 200 / 250 / 300 (other: ______)?
C. Thickness (mm): 1.0 / 1.2 / 1.5 / 1.8 / 2.0 / 2.5 / 3.0?
D. Length per piece?(custom lengths available up to 12m)
E. Quantity?
- Load & Span Requirements (Optional but recommended)
A. Purlin spacing (center to center)?
B. Roof span (from eave to ridge)?
C. Design snow load (kN/m²): ______ (if known)?
D .Design wind speed (km/h or m/s): ______ (if known)?
- Material & Coating
A. Steel grade: Q235B / Q355B / G550 / Other: _______?
B. Zinc coating: 60 g/m² / 120 g/m² / 180 g/m² / 240 g/m² / 275 g/m²?
C. Double-sided hot-dip galvanized? (Yes — all our purlins are double-sided)?
- Additional Requirements
A. Pre-punched holes for bolted connections? (Yes / No — specify size and pattern if yes)
B. End caps or closure strips? (Yes / No)
C. Need engineering drawing for purlin layout? (Yes / No — we D. provide free layout sketch for orders over 500 pieces)
- Shipping & Delivery
A. Destination port?
B. Preferred shipping term: EXW / FOB / CIF/C&F?
