Some knowledge of large diameter butt welding elbow

Large diameter butt welding elbow is a kind of pipe parts, such elbow has a lot of advantages, but many people do not know this kind of pipe, today we need to seriously understand some characteristics of large diameter butt welding elbow.

Welding process of large diameter butt welding elbow

Large diameter butt welding elbow not only saves area, but also ensures airtightness. If the sealing aperture of the large diameter butt welding elbow is reduced, then the specification of the flange can be reduced.

In addition, in use, if the large diameter butt welding elbow with small aperture is used, the connecting part of the sealing surface can also be reduced, and then the flange sealing gasket can be replaced with a sealing ring to ensure the degree of adhesion of the sealing surface.

Welding elbow in welding, must be welded at the same time in the port of the two product workpiece, generally with resistance welding and flash welding these two types of on-the-spot assembly construction.

Welding elbow is produced according to the hot pressing or calcining process of steel elbow, access method is the connection of elbow and steel pipe, such elbow production rate is high, suitable for the vast majority of engineering projects.

In the case of welding elbows, rust removal must be carried out on the external environment of pipes to prevent corrosion in welding. When welding elbows at pipe construction sites, because the welding standards of pipes are different.

Therefore, spot welding must be carried out according to the welding grade of piping. The welding standard of piping may be different, which is another characteristic of welded elbows.

Large diameter butt welding elbow to buy a few points of attention

Its material, there are some bad pipeline manufacturers apply substandard material, the general identification condition is nickel composition. Chemicals can be used to do a good job of division, but the probability of error is very high in this way, because some materials can not be tested by chemicals, the information tested by chemicals is only used as a reference.

Therefore, in order to prevent being cheated, it is necessary to pay attention to the selected material of large caliber butt welding elbow when selecting large caliber butt welding elbow. In order to ensure the quality of large caliber butt welding elbow, it is proposed to select regular reliable manufacturers.

Many customers rarely check the technical specifications of large diameter butt welding elbows, but this is very important, because the mold conditions are not the same, even if the standard parts, there may be corresponding differences

Therefore, in the case of selection, it is necessary to do a good job in the detection of large caliber butt welding elbow, otherwise it may cause corresponding obstacles to pipeline construction.