How seamless steel pipes are connected

Now, let's talk about the sealing connection method of seamless steel pipe. The main principle of the seamless steel pipe sealing connection method is that in a pipe fitting composed of a pipe fitting body and a sealing ring, the outer end of the connection of the pipe fitting body is conical, and the sealing ring can be made to have an annular groove on it. shape, and the height of the inner edge of the groove is smaller than the outer edge. This height difference creates a gap through which fluid can enter the groove. Therefore, under the action of fluid pressure, the inner edge of the sealing ring tightly surrounds the pipe, resulting in a self-sealing effect. The sealing ring can also be made of water-swellable rubber.

For water pipes, self-sealing also occurs due to water absorption and expansion. The conical inner end is connected with an annular groove in which a sealing ring with a self-sealing function under fluid pressure is installed. The outer end of the pipe joint is cylindrical, passes through the sealing ring and fits tightly, and its inner end has the same taper as the pipe body, with a small outer cone and a large inner cone, both passed through the adhesive forming the cone .
In this way, due to the self-sealing effect of the sealing ring, the bonding surface is separated from the water, preventing the "erosion" of hot water, and improving the hot water resistance of the bonded joint, making it suitable for hot water pipes. The sealing adhesive head using this sealing connection method is suitable for connecting with the pipeline.

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