... SA213, A269/SA269, A312/SA312; DIN 17456, DIN17458 Ste Boiler& Heat-exchanger stainless steel tube Standards: ASTM/ ASME A213/SA213, A269/SA269 ... for further confirmation. Marking: JW, material grade, standard, specification, heat no. Length: unfixed length or fixed length Package: banding with ... TestASTM E213 E309 E426ASTM E213 E309 E426HardnessHRB<90HRB<90 Boiler& Heat-exchanger stainless steel tube