... Q235(B),Q345(B),#ETC Standard BS1387,EN10255,EN102 Scaffold Tube gl 275g/m2ItemDetailsOuter Diameter21.3mm-----630mmWall Thickness1.5mm---- ... ,Heating Pipe,Power Pipe,Structure Pipe,Scaffold,Piling PipeManufacture ProcessesRaw material Test→Uncoiling→Strip leveling →End Cutting→End Shearing and Welding ... 28379958806 86-22-28379968806Fax 86-22-28379978Mobile 86-13752411747 Scaffold Tube gl 275g/m2