... A269, ASTM A312, JIS G3459, DIN 17458SuperiorityHigh quality and Competitive priceApplicationfor Construction field, ships building industry, ... industries, food processing and medical industry, boiler heat exchanger, machinery and hardware fields ,etc.PackingStandard ... Application shows :6.Manufacturing process :1) welded pipe :2)seamless pipe :7. Manufacturing shop and equipments :8.Certificates ...