Wholesale Tubing And Casing Product Details Quick Details StandardASTMStandard2ASTM A53-2007 Grade GroupQ195-Q345GradeQ235, Q195, Q215 Thickness0.5 - 2 mm mmSection Shape:Square Outer Diameter20*20-100*100mmPlace of OriginChina Applicationfurniture pipeUsageConstruction,furniture,car park Surface TreatmentoiledSpecial Pipefurniture tube Alloy Or Not:Non-alloySecondary Or NotNon-secondary...