High Quality Low Carbon Aluminum Catwalk Grating Shanghai ChongYi Industry Co., Ltd. Base Info Model NO.：ASMGTechnique：WeldedSurface Treatment：PolishedSpecification：300~2000*195~2000*30mmOrigin：China Description Pre：SUS 304 304L 316 316L 2b Stainless Steel Tube Next：3 4 Sch40 ASTM A213 310S Manufacturers Pipe
