Flange should be checked on schedule

Flange should be checked on schedule

The stainless steel flange connection is to fix two pipes, pipe fittings or components on one flange first, and between the two flanges, pad, and bolted together to complete the connection. Some fittings and components already have flanges and are also flanged. Stainless steel flanges have threaded adapter flanges and welded flanges. They are disc-shaped parts that are most common in pipeline engineering. The flanges are used in pairs. In pipeline engineering, flanges are mainly used for the connection of pipes. In the pipeline that needs to be connected, a variety of devices are flanged, and the low-pressure pipeline can be used with wire flanges, and the welding flange is used for pressures above 4 kg. Low-pressure small-diameter wire-bonded flanges, high-pressure and low-pressure large diameters are all welded flanges. The thickness of the flanges of different pressures and the diameter and number of the connecting bolts are different.

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Stainless steel flanges are free of corrosion, pitting, rust or wear and are among the most powerful materials in construction metal materials. Because stainless steel has outstanding corrosion resistance, it enables structural components to permanently maintain engineering integrity.

Flanges can not be stored for a long time, should be viewed as scheduled, often the exposed surface should be kept clean, dust and dirt removed, neatly stored in the indoor air-drying place, no stacking or open storage. Flange ball valves, globe valves, and gate valves are only fully open or fully closed. They are not allowed to be used for conditioning flow to avoid erosion of the sealing surface and accelerate wear.

The flange is easy to select, simple to make, low in cost and widely used; but its rigidity is poor, so it should not be used in chemical process piping systems with high and extreme damage, such as supply and demand, flammability, explosive and high vacuum requirements. The sealing surface type has a flat surface and a convex surface. The flange structure is simple, small in size and light in weight; it is tight and firm. Now the sealing surface of the ball valve is widely used in plastics and has good sealing performance. It has also been widely used in the vacuum system. The maintenance is convenient, the ball valve structure is simple, and the sealing ring is generally active. It is convenient to disassemble and replace; when fully open or fully closed, the sealing surface of the ball and the valve seat is isolated from the medium.

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