... C St52.4\St52 STS492. ASTM A106 GR.A\B\C; ASTM A53 GR.A\B /API 5L-GrB3. DIN1629 4 ... Alloy pipe Alloy pipeSeamless or welded ASTM/ASME A/SA210 (Gr. A1,C), 556, 213 (T1, T2, T5, T9, T11 ... 6) 209(T1, T1A, T1 b)DIN17175 ( Gr.4538, 15Mo3, 13CrMo44, 10CrMo910)2448 ( Gr. ST37), 1630 (ST37.4, 44.4), BS3059 ... 620, 622-440, 622-490), 980 (Gr.CDSI), 6323 (CFS3), 3602/1 (Gr.360, 430) A335-P1 15Mo3 STPA12A335-P2\A213 ...