spiral welded steel pipe 1.O.D:219mm~3050mm 2.W. ... ,X70,etc 4.Certificate:ISO,SGS Product Spiral steel pipe StandardBS 1387, ASTM A106-2006, API 5L, JIS ... plain endsApplicationPublic waterworks,Petrochemical industry, Electric power industry, Agricultural irrigation, Construction, liquefied petroleum gas, Building structural tube,etc ... -22-26613977Fax86-22-26610650 spiral welded steel pipe