Category: flanges

What factors should be considered when selecting the pressure rating of the takeover flange?

In engineering design, the pressure level of the nozzle flange of the container is usually given by the professional of the process system. The following factors should be considered when selecting the pressure rating of the takeover flange. 1 Design pressure and design temperature of the container; 2 Connection standards of valves directly connected to them, valves, […]

Installation instructions and correct sequence of stainless steel flanges

There are more and more kinds of stainless steel flanges in the production process, for different kinds of flanges, installation methods are also different, then for everyone to introduce the correct installation sequence of stainless steel flanges. The stainless steel pipe or stainless steel pipe fittings contaminated before the stainless steel flange connection should be cleaned up. […]

Failure Analysis of Flange Crack

Abstract´╝ÜThere were many radial cracks on the stainless steel flange surface after storing for five years in Nibo. Marco and micro observation, chemical composition analysis and metallurgical examination were carried out to find out the failure cause. The results show that the fracture mode is stress corrosion. The material of the flange is 1Cr17Ni7, but the not […]

Failure analysis of acid washing corrosion of stainless steel flanges

Stainless steel flanges are widely used in ship pipeline engineering because of their good corrosion resistance. As an important part of pipeline connection, they have the advantages of convenient connection, easy to maintain pipeline sealing performance, and easy inspection and replacement of certain pipelines. A certain type of ship has recently purchased a batch of 304 flange. […]

What is a rolled flange?

What is a rolled flange? The rolled flange is cut into slats by the middle plate, and then rolled into a round welded joint and then processed by a flattening process. The coil is made up of cold and hot coils. After processing into a circle, the water line, bolt holes, and stops are processed. This is […]

High pressure butt-welded flanges

High-pressure butt-welded flanges are suitable for pipelines with high pressure or temperature fluctuations or for high-temperature, high-pressure and low-temperature pipelines, as well as for pipelines that are expensive, flammable, and explosive. The high-pressure butt-welding flange is not easy to be deformed, has good sealing and is widely used. The nominal pressure PN is about 16 MPa. […]

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