... , WT: 1-80mm 4) Use for heater 1 Product name heat exchanger tube2 Production StandardASTM SA213, SA335, A369, A209, A250, G3462, ... Application:Widely used in oil, chemical industry, electricity, boiler industryof high-temperature resistance, low temperature resistance, corrosion resistance in pilie lines ... , etc11 Min Order Quantity : 5 ton12 Payment:TT or LC ASTM A213/SAME SA213 heat exchanger tube