An elbow is a node that connects a pipeline. After passing through this node, the pipeline needs to change its direction, so the elbow needs to withstand a large impact force after the pipeline is circulated and used. It is precisely because of this that the elbow must have superior performance, otherwise it may cause leakage in the pipeline.
Elbow can be 45 degrees elbow, 90 degrees elbow, 180 degrees elbow, long radius elbow and short radius elbow
What are the uses of elbows?
Elbows have excellent comprehensive performance and are widely used in basic engineering such as light and heavy industries, chemical engineering, construction, plumbing, fire protection, refrigeration, petroleum, electricity, sanitation, water supply, drainage, aerospace, shipbuilding, etc.
So what are the precautions when purchasing elbows?
1.Firstly, the specification and model of the elbow to be purchased must be determined, including the diameter of the elbow and the standard, pressure rating, or wall thickness of the elbow. Only after determining these basic contents can other contents be considered, because if these elements are not determined when installing elbows, even if the performance of the selected elbow is good, it cannot be compatible with pipeline engineering.
2.Secondly, it is also necessary to consider the material and production standards of the elbow.
3. It is necessary to really understand the approximate market price of the elbow, so as to be clear in mind, and also to prevent large losses due to greed for small gains;
4. Pay attention to the material of the elbow, as different elbow materials correspond to different adaptation ranges, manufacturing methods, and stamping methods. For different purposes, it is necessary to use corresponding elbows of different materials to match. Common materials can be divided into stainless steel elbows and carbon steel elbows. The chemical composition contained in stainless steel elbows will prevent the surface of the elbow from rusting and corrosion for a long time. The main reason for its difference from carbon steel elbows is the difference in material.
5. When selecting large-diameter elbows, it is also necessary to carefully consider the thick wall of the large-diameter elbow. Taking the elbow in natural gas production and operation as an example, the elbow of natural gas gathering and transportation pipeline is prone to rapid thinning under the synergistic erosion of corrosion and erosion, which affects the safety of pipeline operation. Therefore, it is necessary to measure the wall thickness at the elbow of the pipeline. The application of ultrasonic thickness measurement technology in the wall thickness sampling inspection of the elbow part of natural gas gathering and transportation pipeline network is utilized.
Post time: May-04-2023
