... chemical and heat exchanger 2material:0Cr18Ni9,1Cr19Ni10,00Cr19Ni10,0Cr18NI14 tensile strength seamless carbon steel pipe1. Reference standard : ASTM, ... and inner wall b: under high pressure without leakage c: high-precision d: high finish e: no deformation ... technologyhot rolling, cold drawing, etc.certificationASTMpackageBundle, with oil strapping, packing with oil, wooden, container or other package ...