... A269, ASTM A312, JIS G3459, DIN 17458SuperiorityHigh quality and Competitive priceApplicationfor Construction field, ships building industry, ... medical industry, boiler heat exchanger, machinery and hardware fields ,etc.PackingStandard seaworthy or as customers' ... : Petroleum, chemical industry, electric power, boiler, high temperature resistant, low temperature resistant, corrosion resistant seamless ...