Piping alloy steel 37Mn steel piping Piping alloy steel 37Mn steel pipingOD10-1170mmWT2-135mmStandardGB,JIS,DIN,AISIGradeCr-Mo alloy/ Mn-V alloySection shapeRoundApplitationShipyard, machinery, structure pipe,chemical and petroleum and so onMaterial12Cr1MoV, 15CrMo, Cr5Mo,P91, T91, A335P5, A335P11,35CrMo, 42CrMo,40CrMnMo,Cr9Mo,J55,K55,L80,N80, 40Cr,27SiMn,30Mn,Q345B,Q345C,16Mn,16Cr,20Cr,and so ...