... and low pressure Description: SeriesTop Quility Stainless Steel Pipe FittingsMaterial Grade304, 304L, 316, 316L, 321, ... , GB13296-91, GB9948 ,ASTM A312, ASTM A213, 2) ASTM A269, ASTM A511,JIS349,DIN17456, ASTM A789, ASTM A790, DIN17456,DIN17458, EN10216 ... equipment, 2) Aviation, boiler heat, exchanger, gas metallurgy, shipbuilding, construction, etc.APPLICATIONS : 1. Pipe and Tubes for petrochemical ...