Chinese national standard flange: GB9112-2000 (GB9113-2000～GB9123-2000)
Standards of China Ministry of Chemical Industry: HG5010-52～HG5028-58, HGJ44-91～HGJ65-91 HG20592-97 (HG20593-97～HG20614-97) HG20615-97 (HG20616-97～HG20635-97 HG/T20592-20635-2009
China Ministry of Machinery Standards: JB81-94～JB86-94, JB/T79-94～JB/T86-94
Chinese pressure vessel standard: JB4700-2000～JB4707-2000, SH3406-1996 petrochemical steel pipe flange
Chinese marine flange standards: GB/T11694-94, GB/T3766-1996, GB/T11693-94, GB10746-89, GB/T4450-1995, GB/T11693-94, GB2506-2005, CBM1012-81, CBM1013, etc.
Pipe flange standard system:
There are two main systems for upper 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 flanges.
In addition, there are Japanese JIS pipe flanges, but they are generally only used for public works in petrochemical plants, and have little influence on the environment.
Japanese standard flange: JIS B2220 5K, 10K, 16K, 20K (PL, SO, BL)
The pipe flanges of various countries are briefly introduced as follows:
1. European system pipe flanges represented by Germany and the former Soviet Union GOST 12820-80 Russian standard flange standard
2. American system pipe flange standards, represented by ANSI B16.5 and ANSI B 16.47
3. British and German pipe flange standards, each country has two sets of pipe flange standards and Italian standards
German standard flange standard: DIN2527, 2543, 2545, 2566, 2572, 2573, 2576, 2631, 2632, 2633, 2634, 2635, 2636, 2637, 2638 (PL, SO, WN, BL, TH)
Italian flange standard: UNI2276, 2277, 2278, 6083, 6084, 6088, 6089, 2299, 2280, 2281, 2282, 2283 (PL, SO, WN, BL, TH)
British standard flange: BS4504, 4506
In summary Shangtong’s pipe flange standards can be summarized as two different and non-interchangeable pipe flange systems:
One is the European pipe flange system represented by Germany; the other is the American pipe flange system represented by the United States. the IOS7005-1 is a standard promulgated by the Standardization Organization in 1992. This standard is actually a pipe flange
standard that combines two series of pipe flanges from the United States and Germany. The pipe flange connection dimensions of the two systems are different and cannot be matched with each other:
It is most appropriate to distinguish the pipe flanges of the two systems by pressure ratings.
That is, the European system is 0.25, 0.6, 1.0, 1.6, 2.5, 4.0, 6.3, 10.0, 16.0, 25.0, 32.0, 40.0MPa,
American system is 1.0, 2.0, 5.0, 11.0, 15.0, 26.0, 42.0MPa
Post time: Jun-07-2023