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 ... Low Carbon Heat-Exchanger Tube and Condenser Tubes astm a209 T1 seamless alloy steel pipe