Standard system for Weld Neck Flange
There are two main international pipe flange standards, namely, the European pipe flange system represented by German DIN (including the former Soviet Union) and the American pipe flange system represented by American ANSI pipe flange. In addition, there are Japanese JIS pipe flanges, which are generally only used in public works in petrochemical plants and have little international influence. Now the pipe flanges of various countries are briefly introduced as follows:
(1) European system pipe flanges represented by Germany and the former Soviet Union
(2) American system pipe flange standard, represented by ANSI B16.5 and ANSI B 16.47
(3) British and French pipe flange standards, and the two countries have two casing flange standards respectively.
To sum up, the internationally accepted pipe flange standards can be summarized into two different and non interchangeable pipe flange systems: a European pipe flange system represented by Germany; The other is the American pipe flange system represented by the United States.
Ios7005-1 is a standard issued by the international organization for Standardization in 1992. In fact, this standard is a pipe flange standard formed by combining two sets of pipe flanges from the United States and Germany.
