Safety Metal Stainless Steel Trench Cover Grating Shanghai ChongYi Industry Co., Ltd. Base Info Model NO.:ASDG3Technique:WeldedSurface Treatment:PolishedSpecification:600*300*30mm, 1.5~2.5mmOrigin:China Description Pre:China Manufacuture of Carbon Steel ERW Steel Pipe Next:Drainage Channel Stainless Steel Grating Plate