Tensile and strength testing of seamless steel pipes

Tensile and strength testing of seamless pipes is widely used in structural and basic components. Among the common steel pipe inspection tests, tests in the mechanical field such as tensile strength testing and hardness performance testing are performed by third-party testing agencies.

In the tensile strength test, the elongation and shrinkage after fracture, the tensile strength grade and the yield strength grade of the steel pipe to be verified are all popular testing items. The steel pipes for tensile strength test are all seamless steel pipes. The testing process is to make samples of seamless steel pipes and place them in a tensile testing machine until the samples are broken, and test the specific values of the above properties of the steel pipes. This is also a common performance test for all metal materials in mechanical testing.

As for the hardness test in the steel pipe inspection, the main method is to slowly press the hard indenter into the surface of the sample, observe the indentation and size left on the surface of the sample, and determine whether the hardness of the material is geometric.

For steel pipes, the hardness test can directly and quickly observe the correlation performance of material hardness value pairs. Especially for some irregular metal materials, the conversion relationship between hardness test and tensile strength. It has a very direct and important significance for realizing the conversion of hardness and tensile strength of materials.

From the experience of third-party testing laboratories, with the continuous expansion of hardness testing samples, it is likely to replace tensile testing and become the preferred method of testing mechanical properties for customers in the future. Whether it is a hardness test or a tensile test for steel pipe testing, there are regulations for the size of the test sample. Customers need to choose their own testing items according to the size of their samples.