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Differences between API 5L PSL 1 and PSL 2

Written By pipeline-engineer.com on Wednesday, June 19, 2019 | 2:00:00 AM


An API 5L line pipes manufactured in two varieties PSL 1 and PSL 2. But what is PSL? PSL stands for Product Specification Levels. PSL stands for Product Specification Levels.


Pipes are used in different type of environment such as corrosive and non-corrosive.  Pipes used in severe corrosive environment required material that can withstand such process condition. On other hands for normal services, a standard quality level pipe will also serve the purpose.    
The difference between PSL1 and PSL2 pipes are as follows;

  1. Difference in Chemical Properties
  2. Difference in Mechanical Properties
  3. Difference in Manufacturing
  4. Difference in Inspection and Defect Repair
  5. Difference in Certification & Traceability