SW Nickel Alloy Metal Customized Flange B564 NO 6625 3" 600# For Oil Industry

SW Nickel Alloy Metal Customizedl Flange B564 NO 6625 3" 600#

Socket Weld Flanges

British and French pipe flange standards, two countries each have two pipe flange standards, to sum up, the international pipe flange standard can be summarized as two different, and not interchangeable pipe flange system: a European pipe flange system represented by Germany; Another is the American pipe flange system represented by the United States. Ios7005-1 is a standard promulgated by the International Organization for Standardization in 1992, the standard is actually the United States and Germany two series of pipe flanges merged into the pipe flange standard. The pipe flange connection sizes of the two systems are different and cannot be matched with each other. The pipe flanges of the two systems are most suitable to be distinguished by pressure grade, 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. The American system is 1.0, 2.0, 5.0, 11.0, 15.0, 26.0, 42.0MPa.

1. Current status of pipe flange standards in China

Common standards for pipe flanges used in China's chemical and petrochemical industries 1. British pipe (internationally common piping series) GB 9112-9125, SH 3406

2, metric pipe (commonly used domestic steel pipe outer diameter size series) HGJ44 ~ 76, JB/T74 ~ 90 DIN connection size and JB standard is different

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