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Summary of Differences Between PSL 1 and PSL 2
Parameter
PSL1
PSL2
Grade range
A25 through X70
B through X80
Size range
0.405 through 80
4.5 through 80
Type of pipe ends
Plain-end, threaded end
Plain-end
Seam welding
All methods: continuous welding limited to Grade A25
All methods except continuous and laser welding
Electric welds: welder frequency
No minimum
100kHz minimum
Heat treatment of electric welds
Required for grades > X42
Required for all grades (B through X80)
Chemistry: max C for seamless pipe
0.28% for grades >= B
0.24%
Chemistry: max C for welded pipe
0.26% for grades >= B
0.22%
Chemistry: max P
0.030% for grades >= A
0.025%
Chemistry: max S
0.030%
0.015%
Carbon equivalent
Only when purchaser specifies SR18
Maximum required for each grade
Yield Strength, maximum
None
Maximum required for each grade
UTS, maximum
None
Maximum required for each grade
Fracture toughness
None required
Required for all grades
Nondestructive inspection of seamless
Only when purchaser specifies SR4
SR4 mandatory
Repair by welding of pipe body, plate by skelp
Permitted
Prohibited
Repair by welding of weld seams without filler metal
Permitted by agreement
Prohibited
Certification
Certificates when specified per SR15
Certificates (SR 15.1) mandatory
Traceability
Traceable only until all tests are passed, unless SR15 is specified
Traceable after completion of tests (SR 15.2) mandatory
What else can I help you with?
What is the function of the bureau of product standard?
what is pipe shall be as per API 5L PSL2 BNS
What is the difference between api 5L and a106 piping?
API 5L is a norme, A106 is a grade of steel API 5L is a more comprehensive specification mainly developed for line pipes used in oil and gas industry; the range of strength grades is much wider. While the lower strength grades grades A & B are comparable to A106, the other grades have much higher strengths (e.g. X42, X56, X60,...etc). Also, the quality grades are more stringent when PSL2 is applied where as rolled grades are not acceptable and rework is not allowed. Moreover, particular attention is given to toughness and toughness tests for sour services and higher pressure/ temperature classes.
