... 3094-2000,GB/T 6728-2002,GB/T178-2005,JISG3466,ASTM-A53.BS1387,JIS-G3444,GB/T3091-2001 Material 10#, 20 ... , Cold-formed,ERW,High-frequency welded,Seamless,SAW, Bussiness way FOB ,EXW , CIF,CIP Inspection SGS or CIQ the cold-rolled precision seamless steel pipe