Advantages and disadvantages of flat welding flange

Time

2023-06-13 10:00

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Flat welding flange is generally called flat plate, also known as lap welding flange. The connection between the flat welding flange and the pipe is to insert the pipe into the flange inner hole to the appropriate position before the lap welding. The characteristics of flat welding flange: flat welding flange not only saves space, reduces weight, but also ensures no leakage at the joint and good sealing performance. The reason for the reduced size of the compact flange is the reduced diameter of the seal, which will reduce the cross section of the sealing surface. The advantages of flat welding flanges are as follows:

1. In order to compact the sealing surface of the flat welding flange, only a small pressure is required. As the required pressure decreases, the size and number of bolts required also decreases.

2. The production of flat welded flanges can save data and reduce costs. When the raw material of the pipeline is special and the price is high, the welding cost of the flange of the same raw material will be very high, and the use of this flange can effectively save the material cost. It is beneficial to the construction, the flange bolt holes are not convenient to centering during connection or avoid replacing the equipment flange bolt holes, etc. This flat welding flange is very suitable.

3. Flat welding flange can save space and reduce weight in the application process. It is important to ensure that the head does not leak air. It has a very good sealing function. The reason for the reduced size of the compact flange is because the diameter of the seal is reduced, which reduces the cross section of the sealing surface. In addition, the flange gasket has now been replaced by a sealing ring to ensure an excellent match of the flat-welded flange seal facing the sealing surface.

But it also has some disadvantages, the disadvantages of flat welding flange:

The main disadvantage of flat welding flanges is that there is no guarantee of leakage. This is the lack of planning: the connection is dynamic, such as thermal expansion and fluctuating cyclic loads can cause movement between the flange faces, which can affect the function of the flange, thereby destroying the integrity of the flange and causing leakage.

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Applicable scope and purpose of welding flange

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Applicable scope and purpose of welding flange

2023-06-13

Stainless steel flanges are flanges that extend steel pipes, pipe fittings, etc. into the flanges and are connected to equipment or pipelines through fillet welds. The inner hole on one side of the flange is provided with a welding boss, and the welding boss is provided with an inner hole. The inner hole communicates with the inner hole in the center of the flange, and there is elasticity between the flange and the welding boss. The two top surfaces of the elastic ring are respectively combined with the flange and the welding boss. There are many screw holes on the flange. The screw holes are symmetrically distributed around the center of the flange. The stainless steel flange is made of stainless steel, followed by a polyethylene plastic layer, a rubber layer and a PVC layer. Here we take a look at the use of stainless steel flange precautions. 1. In order to prevent corrosion between eyes caused by heating of stainless steel flanges, the welding current should not be too large, about 20% less than carbon steel electrode, the arc should not be too long, the cooling speed is between the number of layers, and the narrow bead effect is better.

Advantages and disadvantages of flat welding flange

2023-06-13

Flat welded flanges are mainly used for gas valves and natural gas pipelines. Because the short neck can improve the rigidity and carrying capacity of the flange. Flat welded flanges are used for general media. Flat welding flange with neck is suitable for flammable, explosive, corrosive and toxic places. The sealing surface of flat welding flange can be convex surface, concave convex surface and tongue and groove surface. They are different in structure, sealing effect and strength. Flat welding flange is generally called flat plate, also known as lap welding flange. The connection between the flat welding flange and the pipe is to insert the pipe into the flange inner hole to the appropriate position before the lap welding. The characteristics of flat welding flange: flat welding flange not only saves space, reduces weight, but also ensures no leakage at the joint and good sealing performance. The reason for the reduced size of the compact flange is the reduced diameter of the seal, which will reduce the cross section of the sealing surface. The advantages of flat welding flanges are as follows:

Applicable scope and purpose of welding flange