Large Span Group

China Manufacturer with main products: K Span Machine, Roll Forming Machine, Mic120 Mic240 Abm120 Abm240 Super K Span Machine, Slitting Line, Light Gauge Steel Framing Machine,...

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pre-painted Galvanized steel




Product Description

Galvanized steel in coils conforming to ASTM A 653-10
Structural quality (SS), suitable for roll forming, pre-painted

Minimum Carbon content of the base steel to be 0.12%
Minimum elongation is to be 22%, 25%-30% is ideal
Hardness range shall be 70-78 Rb
23.5 inches to 24 inches (optimum is 23.75 inches)
Or 59.69 cm to 60.96 cm (optimum is 60.325 cm)
Maximum outside diameter: 40 inches or 101.60 cm
Inside diameter: 19 - 21 inches or 48.25 - 53.35 cm 
Maximum: 5,000 U.S. pounds or 2,270 kilograms
Grade 40: Yield strength - 40,000 psi or 2,800 kg/cm2 or 28 kg/mm2
Grade 50 Class 1: Yield strength - 50,000 psi or 3,500 kg/cm2 or 35 kg/mm2
Options: 0.026   to   0.040 inch
Or           0.660   to   1.016 mm
 -0.000 (no thickness less than specified) to + 0.008 inch
Or  -0.000 (no thickness less than specified) to + 0.20 mm
Class G-90 (Z-275) for galvanized; Class G-60 (Z-180) can be used for pre-painted although G-90 (Z-275) is preferred
Regular spangle, chemically treated, lightly oiled with evaporative lubricant for galvanized only coils
Coating topside:Suitable for roll forming. 25 microns total dry thickness, polyester, with internal lubricants, on primer. 


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