Consult the flange connection standard GB/T9119-200 20-16 and HG 20592~205635-97 difference.
Hello, 9119 with the previous use and 81-94, was called the new label and old label in the industry. 9119 is the national standard, there is no theoretical weight, and the chemical standard 20592, the European standard, is theoretical weight.To be sure, 9119 and 20592 are the same. Interchangeable.
Hello, 9119 with the previous use and 81-94, was called the new label and old label in the industry. 9119 is the national standard, there is no theoretical weight, and the chemical standard 20592, the European standard, is theoretical weight.To be sure, 9119 and 20592 are the same. Interchangeable.
9119 and used before and 81-94, the industry called new standard and old standard. 9119 is the national standard, there is no theoretical weight, and the chemical standard 20592, the European standard, is theoretical weight.
