... m2, 12 production lines (4 for each section type: round, square, and rectangular) and a work staff of 500 members. We are only 73 ... are specialized in producing: Square Carbon Steel Welded Pipe: 20*20~800*800mm*1.5~16mm Rectangular Carbon Steel Welded Pipe: 20 ... , API, DIN, JIS, EN, GOST, etc.Technique: ERW; SAW Capacity: Square: 5,000 MT/Month Rect.: 6,000MT/Month Round: 8 ...