welded pipe 1.PROFESSIONAL MANUFACTURE 2. ASTM ,GB ,JIS ,Q235,SS400 . 3.HIGH QUALITY AND COMPETITIVE PRICE 4.GOOD SERVICE welded pipeASTM A53 ERW PIPE 1) High-frequency welded 2) O.D. 10mm-406mm 3)W.T. 0.65mm-20mm 4)Length. 1m-16m we have extrem experience in steel manufacturing,over the year's technical capabilities and commitment to quality enable us to build abroad client base across a widen ...