... can supply all kinds of seamless steel pipes or tubes, boiler pipes of pressure vessel, pipeline, heat ... can supply all kinds of seamless steel pipes or tubes, boiler pipe of pressure vessel, pipeline, heat ... 0.8-16mm.Standard and Steel Grade:Steel pipes/tubes of ASME, ASTM, JIS, GB, EN, DIN ... Application: This product is suitable for the steel tubes of the pressure vessel, the pipeline, the heat ...