Good quality and cheap, fast delivery FactorytianjinanxintongdaBusiness TypeManufacture and SaleItemWelded pipeStandardASTM , GB , BS , JISMaterialQ195 , Q215 , Q235 , Q345 , #20Section shapeRound , square , rectangularOuter diameter21-426mm , 48.3mm = 1-1/2"Wall thickness0.8-12mmLength5.8mm , 6mm or customizedSurfaceGalvanized or notPre-galvanized : 60-120 g/m2Galvanized : 240-480 g/m2Min ...