1,thickness:5mm 2,size:48.3*48.3mm 3,weight:1.05-1.08kg 4,surface:galvanization 5,sample:free 100% Steel Q235 Forged Safety Standard Steel Scaffolding Swivel Coupler 1 Our companyChongqing Gaoji Scientific Industrial Trading Co., Ltd., specialized in hydraulic-forming steel coupler mainly used in fastener construction scaffolds, was established in 2001. The company integrates the scientific ...