... With BV certificate,PC certificate,ISO9001-2000,SGS inspection. Steel Square TubeSquareDimension: 10mm*10mm-400mm*400mmRectangular Dimension: 10mm ... .Big OD:in bulk2.Small OD:packed by steel strips3.woven cloth with 7 slats4.according to ... the requirements of customersUsageMechanical&manufacture,Steel strcuture,Ship building,Bridging,Automobile chassisMain marketMiddle East,Africa ...