... :2008, EN74, BS1139, AS1576 4.48.3mm*48.3mm Drop Forged Swivel Scaffold CouplerItemDrop Forged Swivel Scaffold CouplerMaterialQ235Q255Q345Surface TreamentHDG, galavnized, paintedNet Weight1.05-1.1kgSize48 ... .Enough production lines and workers for develiying on time.2.Main product: Scaffolding System( Kwikstage, Cuplock, Ringlock, Haki); Scaffold Coupler( British Type, American ...