Selection of Butter Weld Pipe Fitting Carbon Steel Elbow connection bolt materials and Butter Weld Pipe Fitting Carbon Steel Elbow hydraulic test

　　The choice of JIS B2312 90 Degree Butter Weld Pipe Fitting Carbon Steel Elbow material should have a certain degree of hardness and corrosion resistance, because it will determine the overall quality and performance of the pipe. Bolts are often used for connection in a certain project. However, due to the influence of the material, the bolt material must not be comparable to the material of the pipe, so how to choose the material of the connecting bolt?

　　It should not be used when the temperature is too high, because the strong stainless steel threads are easily deformed at high temperatures. Although they do not rust, if there is dirt in the thread seam, it is easy to cause thread deformation when bending the pipe bolt. If the temperature exceeds the temperature of the material: -196 degrees Celsius to 400 degrees Celsius. If it exceeds the range, you should choose a high-temperature type. If the temperature is lower than 500 degrees Celsius, you can also use 35CrMo. Normal temperature can also be used. High temperatures may cause leakage. Among stainless steel bolts, 304 and 316 materials are low-strength bolts and must be Determined according to the strength of Butter Weld Pipe Fitting Carbon Steel Elbow, when selecting bolts, not only the temperature but also the working pressure must be considered.

　　The material of Butter Weld Pipe Fitting Carbon Steel Elbow connection bolt must first be able to withstand the harsh environment, and then its performance must be determined according to the various properties of the pipe, and the appropriate bolt material must be selected to improve the construction quality. If you want to know what the approximate water pressure of Butter Weld Pipe Fitting Carbon Steel Elbow is, We can test it through hydraulic pressure test. On the one hand, we can make a rough judgment on the pipeline through hydraulic pressure test. How should we conduct its hydraulic pressure test?

　　1. Hydraulic test requirements: Each section of elbow pipe is installed and accepted after passing the inspection. Take length sections from both sides of Butter Weld Pipe Fitting Carbon Steel Elbow and tee. At this time, the pressure test can be carried out. When the pressure is stable and the interface and pipe body are checked for no damage or leakage, the pipe strength The test passed.

　　2. Pressure test methods and measures: Use fire hydrants to inject water at low points through the fire zone, so the water consumption needs to be adjusted here. When injecting water, open the exhaust valve first, and then close the water injection valve and exhaust valve after water comes out of the exhaust valve. Start the pressure test. After the elbow section is filled with water, fully soak it and maintain a certain water pressure. Check the joints for leaks. When the pressure is started, the pressure rises slowly and the exhaust valve is opened to exhaust. The pipeline should be inspected every period of pressurization. If there is no problem, you can continue to the next step. When releasing the pressure, slowly reduce the pressure, open the exhaust valve at the At the same time, put water into the drainage point, and calculate the drainage volume.

　　After Butter Weld Pipe Fitting Carbon Steel Elbow hydraulic pressure test is completed, record the data for later use. Relatively speaking, the water pressure of the pipe generally meets the requirements, and the quality of the pipe may also meet the requirements. In some cases, it may be necessary to measure the water pressure, so you can refer to the above method.