The traits of flat welding flanges: Flat welding flanges no longer solely store house and limit weight, however greater importantly, make certain that there is no leakage at the joint place and have properly sealing performance. The cause why the dimension of the compact flange is decreased is due to the fact it reduces the diameter of the sealing element, which will minimize the cross-section of the sealing surface. Secondly, the flange gasket has been changed by way of the sealing ring to make certain that the sealing face fits the sealing surface. In this way, solely a small quantity of strain is required to compress the sealing surface. As the required strain decreases, the measurement and volume of bolts can be correspondingly reduced, so a new product with small quantity and mild weight (70% to 80% lighter than normal flanges) used to be in the end designed. Therefore, the flat welded flange is a exceptionally awesome flange product that reduces first-rate and space, and performs an essential function in industrial applications.