American standard flange

American Standard flange is to make pipe and pipe interconnected parts, connected to the pipe end. The holes are American Standard flange, bolt the two flange, flange gasket seal. American Standard flange can be formed by casting and may also be threaded or welded.

American Standard flange is a detachable connection. Two pipe, pipe fittings or equipment, first fixed on a flange, between the two flanges, plus flange pad, bolted together, completed the connection. American Standard flange connection is an important connection in pipeline construction. The new standard flange connection is easy to use and can bear greater pressure. Some fittings and fittings have their own flanges, and they also belong to flanged connections.

In the industrial pipeline, using American Standard flange connection is very extensive. In the family, the pipe diameter is small, but also low pressure, can not see the flange connection. If a boiler house or production site, flanged pipes and equipment can be seen everywhere.

Material classification

Carbon steel (Carbon Steel): ASTM A105,20#, Q235, 16Mn, Q345b, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65,, F70:

Stainless steel (Stainess Steel): ASTM, A182, F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;

Alloy steel (Alloy Steel): ASTM, A182, F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/ iii;

American Standard and what is the difference between the standard flange flange

The first is the pressure pressure is called a different name: American Standard pounds (class150LB refers to the pressure of 150 pounds, equivalent to PN2.0 pressure).

Second is the specification Name: according to different caliber American Standard inch American Standard call flange to ASMEB16.5 and ASMEB16.47 2.

According to the Ministry of chemical industry standard flange standard version 2009, divided into the European standard system and American Standard system are two system according to Europe and America to further modify the formulation of flange. The European ASME and American Standard flange is irrelevant.

The American system is similar to the ASME flange, but there are still a lot of data sizes, such as the cover, flange neck, and so on. In version 2009, the United States Department of the flange and the flange American Standard GB almost impossible to refer to each other, the reason is the individual class.