... 3) Out diameter:219--3220mm 4)ISO9001:2000 API Spiral Welded Pipe StandardBS, JIS, GB, DIN, ASTM, APIStandardBS 1387, JIS G3463-2006 ... -alloyNameHigh Pressure Steel PipeCertificationISOAdvantageHigh ApplicabilityModelBHP-30MaterialCarbon Steel or Stainless SteelWeldedERW welded or SMLS