... A53 GR. A , GR. B, GR. C ASTM A106 GR. A , GR. B, GR. C DIN 162 St 37.0, St 44.0, St 52.0 ... API 5L A B X42 ... Gr.BSt 45 ASTM A210-A-1 16MnASTM A210-CSt 52.4 St 52.3 St 52 45#ASTM 1045CK45 ProductsODW ... steel boiler and superheater pipes heat-exchanger pipes. ASTM A 213 specification for seamless ferrite alloy steel boiler, superheater ...