... 23/EC and AD 2000-Merkblattwo We are a quality stainless steel tube manufacturer in China, ... 1-40mm wall thicknessGrade includes: most 300 series, like 304/L/H,316/L/LN ... Specification includes:ASTM/ASME A/SA213,A/SA269,A/SA312,A/SA334,A/SA376,A/SA511,A/SA789,A/SA790 etc. EN ... 10216,GOST-9941,GOST-9940 DIN17456,DIN17458 JIS G3459,G3463, A213 tube for boiler ...