spiral welded steel pipe 1.O.D:219mm~3050mm ... X70,etc 4.Certificate:ISO,SGS Product Spiral steel pipe StandardBS 1387, ASTM A106-2006, API 5L, ... irrigation, Construction, liquefied petroleum gas, Building structural tube,etc CertificateAPI5L,CE,ISO,SGSTrade TermsPrice TermEX-Work,FOB ... steel strip,wrapped with woven bags or be required Contact Tel86-22-26613977Fax86-22-26610650 spiral welded steel pipe