Galvanized Steel Z Roofing/Wall Purlin with Low Cost

• Application: Steel Workshop, Steel Structure Platform, Steel Fabricated House, Structural Roofing, Frame Part, Steel Walkway and Floor, Steel Structure Bridge
• Type: Cold Forming Sectional Steel
• Standard: GB, ASTM, DIN, JIS, AISI, BS
• Trademark: Quality Carbon Structural Steel and Alloy Structural Steel, Wiskind
• Forming: Cold Drawn Steel
• Connection Form: Bolt Connection
• Model NO.: Z180*67*73*20
• Member: Steel Beam
• Type of Steel For Building Structure: High-Strength Steel
• Carbon Structural Steel: Q235/Q345
• Residential Wall Structure: Wall Support
• Surface Treatment: Hot DIP Galvanized Above 275g
• Length: Less Than 11.8m
• Thickness: 2.0-3.0mm
• Width: 100-300mm Customized
• Formation: Cold Bending
• Color: Customized as Your Request
• Lead Time: 20-30s Days After Receiving Your Deposit
• Certification: ISO 9001, SGS
• Transport Package: Standard Seaworthy Packing
• Specification: 180*67*73*20*2.5mm
• Origin: China
• HS Code: 7308900000
• Production Capacity: 3000 Tons/Month

Product Description

Product Description

The purlin is the supporting structure of the steel structure roof and wall retaining system, and it is subjected to constant load and live load (wind load, snow load, etc.). The calculation of the purlin is an important part of the whole structure calculation. Its specifications, materials, anti-corrosion durability and installation determine the safety of the structure and affect the actual bearing capacity of the purlin system. The flatness of the purlin determines the flatness of the cladding system, especially the wall, and determines the aesthetic effect of the wall.

C/Z purlin sectional size range
Ch×b×a×t(mm)	Thickness(mm)	Zh×b1×b2×a×t(mm)	Thickness(mm)
C80×40×20×t	2.0-3.0	Z100×50×50×20×t	2.0-3.0
C80×50×20×t	2.0-3.0	Z120×50×50×20×t	2.0-3.0
C100×50×20×t	2.0-3.0	Z120×58×62×20×t	2.0-3.0
C120×50×20×t	2.0-3.0	Z140×50×50×20×t	2.0-3.0
C120×60×20×t	2.0-3.0	Z140×60×60×20×t	2.0-3.0
C140×50×20×t	2.0-3.0	Z160×50×50×20×t	2.0-3.0
C140×60×20×t	2.0-3.0	Z160×60×60×20×t	2.0-3.0
C160×50×20×t	2.0-3.0	Z160×67×73×20×t	2.0-3.0
C160×60×20×t	2.0-3.0	Z180×60×60×20×t	2.0-3.0
C160×70×20×t	2.0-3.0	Z180×67×73×20×t	2.0-3.0
C180×60×20×t	2.0-3.0	Z180×70×70×20×t	2.0-3.0
C180×70×20×t	2.0-3.0	Z200×57×63×20×t	2.0-3.0
C200×60×20×t	2.0-3.0	Z200×70×70×20×t	2.0-3.0
C200×70×20×t	2.0-3.0	Z200×78×72×20×t	2.0-3.0
C220×70×20×t	2.0-3.0	Z220×70×70×20×t	2.0-3.0
C220×75×20×t	2.0-3.0	Z220×78×72×20×t	2.0-3.0
C250×70×20×t	2.0-3.0	Z250×75×75×20×t	2.0-3.0
C250×75×20×t	2.0-3.0	Z280×70×70×20×t	2.0-3.0
C280×70×20×t	2.0-3.0	Z300×80×80×20×t	2.0-3.0
C300×80×20×t	2.0-3.0
C300×100×20×t	2.0-3.0

Punching way	Mechanism of the hole	Side screw hole(mm) oblong hole	Φ14*22
			Φ16*25
			Φ18*22
			Φ18*26
		Middle screw hole(mm) circular hole	Φ12
			Φ14
			Φ16
	Manual hole		Φ12
			Φ14
			Φ16
			Φ18

Hole distance	C Purlin	C100-C160 min (h1)	40mm
		C180-C300 min (h1)	60mm
		(h-h1)/2 min	30mm
	Z Purlin	min (h1)	50mm

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