1. astm a209 T1 seamless alloy steel pipe 2. ASTM A213, A210-C, A179 ... a179 seamless carbon tube astm alloy steel pipe astm a209 T1 seamless alloy steel pipe2 Production StandardASTM SA213, SA335, A369, ... A209, A250, G3462, G3467, DIN17175, BS3059-23 Material A213: T2, T5, T9, T11, T12, T22, T91, T92 A335: P1, P2, ... Carbon Heat-Exchanger Tube and Condenser Tubes astm a209 T1 seamless alloy steel pipe