... BS1387,EN10255,EN102 API 5L ERW Welding Pipe Scaffold TubeItemDetailsOuter Diameter21.3mm-----630mmWall Thickness1. ... Pipe,Power Pipe,Structure Pipe,Scaffold,Piling PipeManufacture ProcessesRaw material Test→Uncoiling→Strip leveling →End Cutting→End Shearing and Welding→Accumlator→Forming→Telepathy Welding→Seam ... ExaminationPackage1 Naked2 Both ends with a plastic cap ,then put the pipe into a bundle ...