Common production standards for stainless steel butt welded flanges:

Ministry of Chemical Industry standards HG/T20592-2009, HG/T20615-2009, National standards GB/T9115.1-2000, GB/T9115.2-2000, GB/T9115.3-2000, GB/T9115.4-2000, Ministry of Machinery standard JB/T86.2-94, Marine standard CB/T47-1999

Applied discipline: Mechanical Engineering (first level discipline); Mechanical parts (second level discipline); Fran (second level discipline)

Definition: Butt welded flange is a type of pipe fitting that refers to a flange with a neck and a circular pipe transition, and is connected to the pipe by butt welding.

Scope of application: Welding flanges are not easily deformed, have good sealing, and are widely used. They are suitable for pipelines with significant pressure or temperature fluctuations, as well as pipelines with high, high, and low temperatures. The advantage is that they are relatively inexpensive, with a nominal pressure not exceeding 2.5 MPa; It is also used on pipelines that transport expensive, flammable, and explosive media, with a nominal pressure of around PN16MPa.

Production process: mainly divided into four types: forging, casting, cutting, and rolling.

The connection form is single-sided welding and double-sided nut connection.

Product features: Beautiful appearance, smooth and even surface, acid and alkali resistance, anti-corrosion resistance, strong texture performance. .

Processing methods include high-precision CNC lathe turning, CNC rocker arm drilling, and drilling

Butt welded steel flange: used for butt welding of flanges and pipes, with a reasonable structure, high strength and stiffness, able to withstand high temperature, high pressure, repeated bending and temperature fluctuations, and reliable sealing Welding flanges with nominal pressure ranging from 0.25 to 2.5 MPa use concave convex sealing surfaces