... carefully selected by us, we found that they met with the quality standard in US ASTM A554,ASTM-312,ASTM249,ASTM270. ... of inspection on goods before shipment.2) High quality products(Our company do the whole processes, such as cold rolling, annealing, ... price),A, Good-looking in appearanceB, Corrosive-resistingC, Durability3) The best price4) Perfect service,5) Customers will get maximum benefit,We ...