... m2, 12 production lines (4 for each section type: round, square, and rectangular) and a work staff of 500 members. We are only 73 ... specialized in producing: Square Carbon Steel Welded Pipe: 20*20~800*800mm*1.5~16mm Rectangular Carbon Steel Welded Pipe: 20*40~800 ... pipe end PVC capping, threading and so on. Standard: GB, BS, AISI, ASTM, API, DIN, JIS, EN, GOST, etc.Technique: ERW; SAW Capacity: Square ...