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