9 aspects tell difference between api 5l psl1 and psl2

- May 23, 2019-

 api 5l psl1 and psl2 difference is

1. PSL is short for product specification level.

2. The product specification level of pipeline is divided into PSL1 and PSL2, or the quality level is divided into PSL1 and PSL2.

3. API 5L PSL2 specification is higher than API 5L PSL1 specification. These two specification levels not only have different inspection requirements, but also have different chemical composition and mechanical performance requirements.

4. PSL2 is superior to PSL1 in terms of chemical composition, tensile properties, impact energy, nondestructive testing and other indicators.

5. do PSL1 does not require impact performance, PSL2 all except x80 grade steel, full size 0 ℃ average Akv: longitudinal p j, 41 lateral acuity 27 j.Average grade X80 steel, full size 0 ℃ Akv: longitudinal 101 j, or lateral acuity 68 j.

6. the pipeline should be branch by branch water pressure test, and the standard does not allow lossless water pressure, this is also a big difference between API standard and China's standard.

7. PSL1 does not require non-destructive testing, PSL2 should be one by one non-destructive testing.

8. The main difference is that the pipe end of PSL2 must be sandblasted, while PSL1 is not used, and it is basically the same everywhere else.

9. The requirements of psl-2 are more stringent in terms of the selection of raw materials and detection methods, as well as the final production process.

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