... #,45#,16Mn, 2ASTM A106 Gr.B, ASTM A53 Gr.B, St 37, St 42, St 52, Q 235, Q 195, Q345, 27SiMn 30 inch ... #,45#,16Mn, ASTM A106 Gr.B, ASTM A53 Gr.B, St 37, St 42, St 52, Q 235, Q 195, Q345, 27SiMnseamless steel pipe ... -39mm Grade 10#,20#,45#,16Mn,27SiMn,12Cr1MoV,Q235, ST42,ST52,A106-a,A106-b, and so on Length 6-12m ...