Grade:Q345A/B, Cr5Mo, 12Cr1MoV, 10CrMo910,,27SiMn, 15CrMo, 30CrMo, 34CrMo4, etc ... -5L PSL 1:A25\A\B\X42\X46\X52\X56\X60\X65 \X70 PSL 2:B\X42\X46\X52\X56\X60\X65 ... .4\St52 STS492. ASTM A106 GR.A\B\C; ASTM A53 GR.A\B /API 5L-GrB3. DIN1629 4. JIS ... P22) 333 (Gr.1,3.,6) 209(T1, T1A, T1 b)DIN17175 ( Gr.4538, 15Mo3, 13CrMo44, 10CrMo910)2448 ( Gr. ST37 ... .30-0.600.0250.025≤0.501.90-2.600.87-1.13… stainless steel