1. Heat exchanger tube 2. ASTM A213, A210-C, A179, A192, DIN17175 ... WT: 1-80mm 4) Use for heater 1 Product name heat exchanger tube2 Production StandardASTM SA213, SA335, A369, A209, A250 ... Widely used in oil, chemical industry, electricity, boiler industryof high-temperature resistance, low temperature resistance, corrosion resistance in pilie ... Payment:TT or LC ASTM A213/SAME SA213 heat exchanger tube