In various industries where pipes are widely used, destructive testing is a key step to ensure the quality and safety of pipes.
1. Pressure testing
Pressure testing is an important part of destructive testing of pipes. For pipes such as API 5L PSL2, water pressure or air pressure far exceeding the normal working pressure is applied to the inside of the pipe. In this process, the pressure is gradually increased until the pipe breaks or permanently deforms. This can accurately determine the pressure limit of the pipe. For example, in oil and gas transportation, the performance of the pipe in an extreme high-pressure environment can be determined to prevent leakage or explosion accidents caused by pressure overload.
2. Tensile testing
Tensile testing is used to evaluate the mechanical properties of pipes. The pipe sample is fixed on a tensile testing machine and tensile force is applied axially until the pipe breaks. This test can obtain key data such as the yield strength, tensile strength and elongation of the pipe. For pipes like PSL2, because they have strict chemical composition and mechanical property standards in manufacturing, tensile testing can verify whether they meet the requirements for strength and toughness in critical infrastructure applications, such as ensuring that they will not break suddenly when subjected to tension.
3. Impact test
The impact test simulates the sudden impact that the pipe may suffer during use. Use devices such as pendulums or drop hammers to impact the pipe with a specific energy. This is essential for evaluating the pipe's ability to resist impact in situations such as accidental impacts at the construction site or collisions during transportation. For example, when laying pipes in cold areas, low temperatures may make the pipes brittle, and impact tests can reflect the performance of the pipes under such harsh conditions.
4. Corrosion damage test
Depending on the use environment of the pipe, different corrosion conditions are simulated, such as corrosion in acidic or alkaline environments or soil. By accelerating the corrosion process, observe the corrosion rate, corrosion morphology, and ability of the pipe to resist corrosion penetration. For pipes that transport corrosive media in the petroleum and chemical industries, this test ensures that the pipes will not fail due to corrosion during long-term use, ensuring the safe and stable operation of the entire system.
Pipe pressure testing
