Advantages and disadvantages of 304 stainless steel butt welding flanges

Stainless steel welded flange, also known as high neck flange, differs from other flanges in that it has a prominent high neck. With the increase of height, the wall thickness of the protruding high neck will gradually be the same as the thickness and diameter of the pipe wall to be connected, which can increase the strength of the flange. 304 stainless steel welded flange is mainly used for pipeline connection in scenes with great environmental changes, such as high temperature, high pressure and low temperature pipelines. In pipeline engineering, stainless steel flange is mainly used for pipeline connection, which has the functions of connecting pipelines, maintaining pipeline sealing performance, and facilitating the replacement and disassembly of a pipeline to check the pipeline situation.

Matters needing attention for 304 stainless steel welded flange connection:

First, when using welding technology, the current should not be too large. Generally speaking, it should be 20% less than covered electrode, and the arc should not be too long. For rapid cooling between layers, narrow welding technology can be used.

Second, the covered electrode used must be kept dry. If necessary, drying method can be used to promote covered electrode drying. However, here, the factory environment of stainless steel flange manufacturers should be kept in a good dry state, and in order to avoid gas shedding, the drying method cannot be reused.

Three, stainless steel flange manufacturers should emphasize that chromium stainless steel after butt welding method, there will be a big difference in hardening and beauty, easy to crack. If the same covered electrode is used for welding, the preliminary work required is preheating and cold treatment. Stainless steel flange can be used normally after welding.

Advantages and disadvantages of 304 stainless steel butt welding flange:

Merit:

1. Cost saving, when the pipe material is special and expensive, the cost of welding the flange of the same material is higher.

2. It is inconvenient to weld or process or require high strength, such as plastic pipes, FRP pipes, etc.

3. The construction is convenient, if the flange bolt hole is not convenient to align during the connection process or in order to prevent the equipment from being replaced in the future, manually rotate and align the flange bolt hole, etc.

Shortcoming:

1. Low pressure

2. The strength of the weld ring is low (especially when the thickness is less than 3mm)

While stainless steel flanges are not important as a small part in the overall product, pipes, or machinery, they do play a very important role. In the future, with the development of flange materials and technology, it can ensure that the whole joint connection process is more accurate and firm, and ensure people's safe and stable and reliable use.