... SA213, A269/SA269, A312/SA312; DIN 17456, DIN17458 Ste Boiler& Heat-exchanger stainless steel tube Standards: ASTM/ ASME A213/SA213, A269/SA269 ... to 219mm. Wall thickness range from 0.3mm to 25mm.For sizes other than given, please check with our office ... for further confirmation. Marking: JW, material grade, standard, specification, heat no. Length: unfixed length or ...