... Q235 4. Surface: HDG &Elec. 1. Scaffold Coupler/Swivel Coupler/ Scaffolding Parts2. Item No.: ZS-A0483. Size ... drop forged and pressed scaffolding couplers/clamps, such as double/fixed coupler, swivel coupler; fixed/swivel beam/girder coupler, putlog coupler, plank coupler, sleeve coupler, joint pin, single coupler ... nut, flange nut. +Our pressed fixed/swivel clamp has SUV certificate. +The surface ...