Steel Pipe Welding Flange
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Deep Processing
Steel Pipe Welding Flange
Welding flange connection is the process of fixing two pipes, fittings, or equipment onto a welded joint. Between the two welds, a flange gasket was added and bolted together to complete the connection. Welding is an important connection method for high-pressure pipeline construction. Welding flange connection is convenient to use and can withstand large pressures. Welding flanges are widely used in fields such as petroleum, chemical, natural gas, power plants, metallurgical pipelines, etc.
Welding flange standard system
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 flanges. In addition, there are also Japanese JIS pipe flanges, which are generally only used for public works in petrochemical plants and have a relatively small international impact. Here is a brief introduction to pipe flanges in various countries:
(1) European system pipe flanges represented by Germany and the former Soviet Union
(2) American standard for pipe flanges, represented by ANSI B16.5 and ANSI B 16.47
(3) British and French pipe flange standards, each country has two sleeve flange standards.
In summary, the internationally recognized 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; Another 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, which is actually a pipe flange standard that combines two series of pipe flanges from the United States and Germany.
HG20593-2009 HG20615-2009 National standard: GB/T9119-2000 GB/T2555-81 Mechanical department standard: JB/T81-94 JB/T74-94 JB/T75-94 Marine standard: CB M1001-81 [Service pressure b] PN 0.25MPa, PN0.6MPa ,PN1.0MPa,PN1.6MPa ,PN2.5MPa，PN4.0MPa
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