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