Features of Flat Welding Flanges

Features of Flat Welding Flanges

When welding flat welding flanges, only one side welding is required, and there is no need to weld the inner port of the pipe and flange connection. The welding installation of butt welding flanges requires double-sided welding of the flanges. Therefore, flat welding flanges are generally used for low and medium pressure pipelines, and butt welding flanges are used for the connection of medium and high pressure pipelines. Butt welding flanges are generally at least PN2.5MPa. Butt welding is used to reduce stress concentration. Butt welding flanges are mostly neck flanges, also called nipple flanges. Therefore, the installation cost, labor cost and auxiliary material cost of the butt welding flange are higher, because there is one more process.

The flat welding flange not only saves space and weight, but also has good sealing performance without leakage at the joint. The reduction in size of the compact flange is due to the reduced diameter of the seal, which reduces the cross-section of the sealing face. Second, the flange gasket has been replaced by a sealing ring to seal the mating of the sealing face. In this way, only a small amount of pressure is required to compress the cover. With the reduction of the required pressure, the size and required number of bolts can be reduced accordingly, so a new type of small volume and light weight (70% to 80% lighter than the traditional flange) is finally designed. product.

It is impossible for any product to be without defects, but try to control the shortage of the product as little as possible, so try to improve the performance of the product when producing flat welding flanges, so that it can play a good role.

The connection between the flat welding flange and the pipeline is to insert the pipe into the inner hole of the flange to a proper position, and then lap welding. There are a wide range of applications of flat welding flange.

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