Glass Wool Insulation, Rock Wool Insulation, Rubber Foam Insulation manufacturer / supplier in China, offering Nelson Stud for Metal Decking Shear Weld 19mm, Shear Connector 10mm 13mm 16mm 19mm 22mm 25mmshear Studs, Nelson Stud Bolt Stock Shear Connector Shear Stud Welding Grade C1015~C1018 and so on.