API 5L Seamless Steel Tube
We are one of the biggest manufactures of steel & stainless steel & alloy steel tubes and pipes in China. With development more than 30 years, we have accumulated a great many clients all around the world and Lai products also won the great praise among the customers. Please feel free to send your requirements to us: semseoleo@gmail.com.
API 5L pipeline is the oil, natural gas and water transmission pipeline specified by American Petroleum Institute, including seamless and welded steel pipes.
API 5L line pipes are available in multiple carbon steel grades, designated as Grade B, X42, X46, X52, X56, X60, X70, X80 and in PSL1 or PSL2 specification levels. The following is the difference between PSL1 and PSL2 and the introduction of common steel grades.
Advantage of API 5L Seamless Pipeline
Help cut down on expenses.
Athough more expensive than welded pipe,but this increased ability to withstand pressure allows to use pipes that are thinner and lighter，so the total price is lower.
Excellent resistance to cracking forces which can be caused in long pipelines；Sour service suitability and durable；Excellent strength and ability to withstand in high-temperature applications；Long service life in any industrial pipeline operation.
Differences between PSL1 & PSL2
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PSL1 Seamless Pipe |
PSL2 Seamless Pipe
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CVN impact (Charpy) testing |
None required |
Required for all grades |
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Nondestructive Inspection of Seamless |
Only when purchaser specifies SR4 |
SR4 mandatory |
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Certification |
Certificates when specified per SR15 |
Certificates (SR 15.1) mandatory |
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Traceability |
Traceable only until all tests are passed, unless SR15 is specified |
Traceable after completion of tests (SR 15.2) mandatory |
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Hydrostatic Test |
Required |
Required |
Application of API 5L Seamless Tube Common Grades
API 5L Gr.B
API 5L X60/X65
API 5L X42
API 5L X42 line pipe is most commonly used in the petroleum industry to transport oil and gas.
Onshore, for transporting oil and gas from wellheads to refineries, and offshore, for transporting oil and gas from platforms to onshore terminals.
API 5L X42 line pipe is also used in other industries such as chemical industry, for chemical transportation, construction industry, for pipeline construction.
API 5L X52
X52 and X42 have the same purpose, but the impact test of – 20 ° is added to X42.
So it is a higher strength steel grade than X42 and is typically used in higher-pressure applications.
At present, the demand for API 5L X52 steel pipes in African countries is increasing.
Available size
NPS Designator | DN Designator | Outside Diameter | Wall Thickness | Weight Class | Schedule No. | Test Pressure, psi | |
mm | mm | Grade A | Grade B | ||||
1/2″ | 15 | 21.3 | 2.77 | STD | 40 | 4.8 | 4.8 |
3.73 | XS | 80 | 5.9 | 5.9 | |||
4.78 | – | 160 | 6.2 | 6.2 | |||
7.47 | XXS | – | 6.9 | 6.9 | |||
6″ | 150 | 168.3 | 4.78 | – | – | 7.0 | 8.2 |
5.56 | – | – | 8.2 | 9.6 | |||
6.35 | – | – | 9.4 | 10.9 | |||
7.11 | STD | 40 | 10.5 | 13.0 | |||
7.92 | – | – | 11.7 | 13.7 | |||
8.74 | – | – | 12.9 | 15.0 | |||
9.52 | – | – | 14.1 | 16.4 | |||
10.97 | XS | 80 | 16.2 | 18.9 | |||
One-stop service to facilitate your purchase
Processing Services:
- OEM & ODM
- Protective Coatings
- Saw and Flame Cutting
- Beveling, Threading and Grooving
