... alloy pipe/tube 1. ASTM A335 P22 alloy pipe 2. ASTM A213, A210-C, A179, ... A192, DIN17175 ST37.5 ST35.8 ASTM A335 P22 alloy pipe1. ASTM A335 P22 alloy pipe 2. ASTM A213, A210-C ... , WT: 1-80mm 4) heater 1 Product name ASTM A335 P22 alloy pipe heat exchanger tube2 Production StandardASTM SA213, SA335 ... Material A213: T2, T5, T9, T11, T12, T22, T91, T92 A335: P1, P2, P5, P9, P11, P12, P21, P22, P91, P92 ...