construction materials warehouse prefab building

Z Shaped C Shaped Steel Roof Purlins Q235B Q355B Structural Beams

Z Shaped C Shaped Steel Roof Purlins Steel Structural Component Product Attributes Attribute Value Application Steel Purlin Steel Structural Component Raw steel material Q235B, Q355B, ASTM A36 Surface treatment Painting or Hot-dip Galvanize Shot blasting level Sa 2.5 Service life 50 Years Process criterion AWS D1.1, GB Installation Engineer guidance on site Product Description A horizontal roof beam perpendicular to a truss or rafter and used to support rafters or roofing