... -DN800Section shapement:Round (Bevelled ends/plain end pipe)Product categoryMain materialImplementation of standardsSpecification RangeUseStructural tube20#,35 ... and medium pressure boiler superheater tube, boiling water pipe, pipe size locomotivealloy steeltubeCr5Mo(P5,STFA25,T5,)15CrMo(P11 ... 530×1.5-36Refined plant oil refining furnace, heat exchange tubes, seamless pipesHigh Pressure Boiler Tube20G, ...