Changsha Xiangjia Metal Materical Co., Ltd.

The difference between   slip on flange and butterfly valve flange   can be divided into the following points: 1. The connection size of the butterfly valve flange and the slip on flange is the same, the difference is that the inner diameter of the flange is different, the inner diameter of the butterfly valve flange is smaller than slip on flange, and the butterfly valve flange has two inner diameters , a small inner diameter and a large inner diameter. 2. According to the name of the butterfly valve flange, we can know that it is a special flange for butterfly valves. The butterfly valve flange can be combined with the rubber ring of the butterfly valve to ensure the tightness of the installation position to get the best sealing effect. 3. The sealing structure of the butterfly valve flange adopts polytetrafluoroethylene, synthetic rubber and phenolic resin to form a composite valve seat, which makes the valve seat have better strength while being elastic. The slip on flange...

Flanges   are the interconnected parts between the shaft and the shaft, which are used to connect pipe ends. Below is the classification of flange according to the machinery (JB) industry industry standard, national (GB) standard, chemical industry (HG) industry standard, petrochemical (SH) industry standard, let's take a look. 1. According to the machinery (JB) industry standard: integral flange, butt welding flange, plate flat welding flange, butt welding ring plate loose flange, flat welding ring plate loose flange, flanging ring plate loose flange, flange cover. 2. According to the national (GB) standard, it is divided into: integral flange, threaded flange, butt welding flange, flat welding flange with neck, socket welding flange with neck, butt welding ring with neck loose flange, plate flat flange Welding flange, butt welding ring plate loose flange, flat welding ring plate loose flange, flanging ring plate loose flange, flange cover. 3. According to the chemical industry (H...

Flange   used to connect and install   spiral steel pipe . The installation should be constructed in strict accordance with the process specifications. Here   Xiangjiasteel   will talk about the problems that need to be pay attention to when use flange to connect and install spiral steel pipe: 1. Before installing, check the sealing surface and gasket to avoid affecting the sealing performance. 2. When connecting, the flanges should be kept parallel and the deviation should not bigger than 1.5/1000 of the outer diameter of the flange, and should be less than 2mm. Do not use strong bolts to eliminate skew. 3. The plane of the flange should be perpendicular to the axis of the spiral steel pipe. The fillet welds on the inner side of the flat-welded flange should not be missed and and remember to remove the impurities such as oxides after welding. 4. The gasket should be a full circle, the inner diameter should be 2-3mm bigger than the inner diameter of the flange. 5. Th...

1. Before assembling the   flange , the flange surface, it is nessary to clean the sealing surface. 2. When assembling flat welding flange, the end of the pipe should be inserted into 2/3 of the thickness of the inner diameter of the flange, and then the flange should be spot welded to the pipe. Check and correct the flange position from different directions so that the sealing surface is perpendicular to the center line of the pipe, and then spot weld the second point below it after it is correct. 3. Use a 90° angle ruler to check and correct the flange position from the left and right side, and then spot weld the third and fourth points after passing the test.  4. To the assembly of a pair of flanges, the bolt holes of the flange to be installed should be aligned with the corresponding bolt holes of the flange that has been fixed, and parallel to the flange that has been fixed, and the deviation should not be 1.5‰ bigger than the outer diameter of the flange, which not over...