... conveyance of gas, petroleum, liquid, and electricity; 2)We have engineering team for pipeline system buildingA: ... : 500mm-16,000mm D: Steel grade: Q195 - Q235A, ST37-2, ST52, S235, S355, SS400, A1010, SAE1045, X40, ... abroad. StandardGradeSpecificationsGB10#,20#,45#,16MnO.D.:1/2"-20"W.T.:SCH10-XXSLength:5-12mBSQ195,Q235 ... A210-A-1,A210-CDINSt33,St37,St37-2,St35.8,St35.4,St42,St42-2,St45-8,St52.4, ...