Product Name：Alloy Steel Threaded Flange
Threaded flange is a kind of flange which uses thread to connect with pipeline. In design, it can be treated as loose flange. The advantage is that there is no need for welding, and the additional torque to the cylinder or pipe is very small when the flange is deformed. The disadvantage is that the flange thickness is large and the cost is high. Suitable for connection of high pressure pipeline.
The threaded flange is a kind of non welding flange, which processes the inner hole of flange into pipe thread and realizes the connection with the pipe with thread. Compared with the flat welding flange or butt welding flange, the threaded flange has the characteristics of convenient installation and maintenance, and can be used on some pipelines that are not allowed to be welded on site. The alloy steel flange has enough strength, but it is not easy to weld, or the welding performance is not good, the threaded flange can also be selected. However, when the pipeline temperature changes rapidly or the temperature is higher than 260 ℃ and lower than - 45 ℃, it is recommended not to use threaded flange to avoid leakage.
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The tensile strength and yield limit of the common performance grades of non-standard flanges When connecting pipelines, non-standard flanges can maintain the sealing performance of the pipeline and make the pipeline connection closer; when a certain section of pipeline needs to be replaced, use non-standard flanges. Standard flanges are also easier to replace pipes, and the operation of non-standard flanges is relatively simple. You only need to loosen the bolts and remove the non-standard flanges to replace the pipes; using non-standard flanges can also easily check the pipeline Pipeline situation; In addition, the use of non-standard flanges is also beneficial to seal a certain section of pipeline.
Common non-standard flange tightening torque engineering calculation resultsNon-standard flange standards National standard industry standard performance level/material grade center distance specification bolt tightening torque bolt tightening torque center distance tightening glue selection method non-standard flange fasteners anti-loosening The more commonly used is the use of center distance fastening glue to prevent loosening. Among them, the pure material has a large adhesive force, and it is generally not disassembled after use in the non-standard flange fastening, and the pure material is generally two-component, which is complicated to operate. Carbon steel has good vibration resistance, adhesion and tightness, and strong anti-loosening function. Carbon steel is a one-component glue, which is liquid in the air. After the air is isolated, the polymerization reaction will solidify, and the use of carbon steel can be Repeated disassembly of standard flanges, so carbon steel is more commonly used.
