... )GB/T8162-99,GB/T8163-99,GB5301-95, 20GGrade:10#,20#,35#,45#,16Mn,20Mn,45Mn,27SiMn,20G,40Cr,A335P11,A53A ... ,A53B,A335P22,Q235,Q345,J55 and so on.Other steel grade can be provided after negotiating with customers.Specifivation range:a ... ,pipe fittings,and mechanical structres and so on.Packing:Standard export packing,bundles,seaworthy wooden cases,with or without edge protector ...