... .material:20G,15MoG,12Cr1MoV 1.seamless high pressure bolier pipe 2.O.D:6-750mm,W.T:1- 60mm ... -1998,JIS G3462-1998,DIN17175-1979,BS3059;low pressure boiler pipe standard:GB3087-1999,ASTM A179,ASTM A192,ASTM SA179, ... bevel end,plastic cap10.Applications:high, middle, low pressure boiler and pressure purpose11.Certificate Standard: ISO 9001:2000 13. ... 5~228.6)0.381.14 seamless high pressure boiler pipe