... which integrates R&D, manufacture and sales of stainless steel products, Mainly manufactures and sells ... stainless steel decorative pipes(e.g. round pipe with range from diameter 6 ... A554,ASTM-312,ASTM249,ASTM270. Welcome any of inspection on goods before shipment.2) High quality ... , annealing, slitting, pipe making and so on, because of everything is under our control, So you ...