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Expansion, expansion joints, expansion joints, pipe expansion pipe, steel expansion, limit expansion pipe, casing expansion, dresser

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Butt welding of the flange

Welded flange is a pipe fitting, refers to the transition and circular tube with neck flange and pipe butt welding.

Scope of application

Butt welding flange is out of shape not easily, sealing is good, widely used, are suitable for pressure or temperature fluctuations in line or high temperature, high pressure and low temperature pipes, advantage is that the price is cheaper, nominal pressure no greater than 2.5 MPa. Also used to transport is expensive, inflammable, explosive medium pipeline, nominal pressure around PN16MPa.

The production standard

Commonly used production standards: chemical standard HG/T20592-2009, HG/T20615-2009, the national standard GB/T9115.1-2000, GB/T9115.2-2000, GB/T9115.3-2000, GB/T9115.4 standard JB/T86.2-94-2000, machinery, Marine standard of CB/T47-1999

1, 2, cast steel, carbon steel, alloy steel, stainless steel 4. 3

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