... & mid-pressure boiler,etc.Stainless Steel Pipe300 SeriesGB,JIS,ASTM, DIN6-720mm, 0.5-65mmWidely used in made mechamical ... , ST52, A335P11,P5,P910,P22, ST37, STK400GB5310-2008, ASTM A335/A335M ASTM A213/A213M JISG3458-19888-1240mm, 1-200mmApplied to electric power ... .High-pressure boiler pipe12Cr2MoWVTiB WB36 SA106 ST45.8GB5310-1995, ASTM A106-1999219-824mm, 24-78mmUsed in automobile industry,chemical ...