The slip on flange has good sealing performance, space saving and good quality. It can not only prevent water leakage of the joint, but also reduce the diameter of the seal. Therefore, flat welding flange is a good pipe fitting to save space and cost during construction.

When installing the flat welding flange, it is necessary to use the sealing ring instead of the flange gasket to keep the sealing surface consistent. Therefore, the flat welding flange is widely used and plays an important role in industry.

Sealing principle of flat welded flange the two sealing surfaces of bolts press the flange gaskets together to form a seal, but this will also lead to the destruction of the seal. In order to maintain the seal, it is necessary to maintain a large bolt force, so the bolts must be made larger, and the larger bolts must be equipped with a larger nut, that is, bolts with a larger diameter are required to create conditions for tightening the nuts. However, the larger the bolt diameter, the less applicable the flange is, and the flange is likely to be bent. The only way to do this is to increase the wall thickness of the flange section.

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