... , ASTM A790, DIN17456,DIN17458, EN10216-5, JIS3459,GOST 9941-81 Material Grade304, 304L, 316, 316L, 321, 321H, 310S, 347H,309.317 ... , and advanced quality detecting, such as HLGER read_directly spectrum instrument, infrared CS analysis instrument, which can do ultrasonic test, crystal corrosion test and ...