Stainless steel flange expansion joints all play a role of expansion and expansion compensation for the operation of the pipeline. Because they have this commonality in the pipeline connection, they have a complementary role in the pipeline connection and the replacement of expansion joints. Only in specific Under the circumstances, a certain model series of pipe fittings are selected for use. And whether the connection is in the sliding pipeline, the corner of the pipeline and the water pump valve, whether there are fixed buttresses, infinite buttresses and directional limit buttresses in the pipeline, and which model series of pipe joints should be selected reasonably . What problems should be paid attention to in the maintenance of stainless steel flange expansion joints?
Stainless steel flange expansion joint Stainless steel flange has excellent performance, the flange is also called flange plate or flange plate. It refers to the parts used when connecting pipes with pipes and valves. There is a gap between the flanges, so bolts are needed to connect the two flanges tightly, and the flanges are sealed with a sealing ring while connecting, so as to ensure that no leakage occurs. Stainless steel has good corrosion resistance and can maintain the integrity of the design.
The stainless steel flange expansion joint is mainly used to provide great convenience for the installation, maintenance, and replacement of valves, pumps, water meters, and filters on various water supply and drainage pipelines. The expansion and contraction of the water supply distance pipeline due to the temperature difference plays a regulatory role. It is characterized by large expansion and contraction, simple and convenient installation and convenient maintenance during work. Because of its excellent material, it also has high pressure and high temperature resistance. It is suitable for transporting hot water, steam, gas, various oils, and the temperature is the same as that of the pipeline.
Many people also pay attention to the maintenance of flange expansion joints. How to use stainless steel flange expansion joints in actual use to extend its life? We now briefly introduce the maintenance methods:
Method 1: Anticorrosion of stainless steel flange expansion joint with epoxy resin paint coating. Use paint to evenly and densely coat the surface of the derusted metal pipe to isolate it from various corrosive media. It is the basic method for pipeline anticorrosion* one. Since the 1970s, the laying of pipelines in harsh environments such as the land and the ocean, and the increase in pipeline temperature due to the heating and transportation of oil, have put forward more requirements on coating performance. Therefore, pipeline anticorrosion coatings are increasingly using composite materials or composite structures. These materials and structures must have good dielectric properties, physical properties, stable chemical properties, and a wide temperature range.
Method 2: Anti-corrosion coating on the wall of the expansion joint of stainless steel flange: Anti-corrosion coating: In order to prevent corrosion in the pipe, reduce frictional resistance, and increase the throughput, the film is applied to the inner wall of the pipe. Commonly used coatings are amine cured epoxy resin and polyamide epoxy resin, and the coating thickness is 0.038 to 0.2 mm. In order to ensure that the coating is firmly bonded to the pipe wall, the inner wall of the pipe needs to be surface treated. It can also be fixed with pipe clamp supports in the entire pipeline, and an insulation layer is added to perform the anti-corrosion effect of the entire pipeline together with the stainless steel flange expansion joint pipe layer and pipe wall



Prev：Copper sulfate point test method for stainless steel flange
Next：What stainless steel flanges are produced by Beidou flange pipe fittings manufacturers