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API 5L Carbon Seamless Steel Pipe for Pipeline Transportation Systems
Standard: API 5L
Grade: Gr.B/ X42/ X52/ X60/ X65
Out Diameter:1/2″ – 48″ ( DN15 – DN1200)
Wall Thickness: Sch40/ 80/ 120/ 160
Length M/12M or Customized
Ends : Plain/ Bevel
Usage: Oil and Gas/ Water Pipeline
Surface: Bare/ Black/ Varnish/ Oiled/ Galvanized, 3PE, etc
Product Description
What is API 5L Carbon Seamless Steel Pipe?
API 5L Carbon Seamless Steel Pipes are a specific type of steel pipe used extensively in the oil and natural gas industries for pipeline transportation systems.
API 5L Carbon Seamless Steel Pipes are highly engineered and rigorously tested pipes, crucial for the safe and efficient transportation of hydrocarbons and other fluids in the demanding environments of the oil and gas industry.
API 5L Carbon Seamless Steel Pipe Specification
Note: Some of the main specifications are shown below, please contact us for more details.
| 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 | |||
Applications of API 5L Carbon Seamless Steel Pipes
API 5L Carbon Seamless Steel Pipes are the backbone of the energy industry, used for:
- Crude Oil and Natural Gas Pipelines: Long-distance transmission lines from wells to refineries, processing plants, or distribution centers.
- Refinery and Petrochemical Piping: For internal plant piping where high pressure, temperature, or corrosive media are present.
- Offshore Pipelines: Subsea pipelines for oil and gas extraction and transport.
- Sour Service: Specifically designed and tested for resistance to hydrogen sulfide (H2S), which can cause embrittlement and cracking in steel.
Key Features and Designations within API 5L Seamless Steel Pipes
API 5L is a comprehensive standard, and pipes manufactured to it will have several important designations:
Grades: API 5L pipes come in various grades, which indicate their minimum yield strength. The higher the “X” number, the higher the minimum yield strength (in thousands of pounds per square inch, psi). Common grades include:
-
- Grade B (often equivalent to X42 for some properties)
- X42 (minimum yield strength of 42,000 psi)
- X46, X52, X56, X60, X65, X70, X80
- Some manufacturers can even produce higher grades like X100 and X120 for extremely demanding application
Product Specification Levels (PSL): API 5L defines two main product specification levels:
-
- PSL1: This is the standard quality level for line pipe, suitable for most general pipeline applications.
- PSL2: This level has more stringent requirements for chemical composition, mechanical properties (e.g., higher impact toughness), and non-destructive testing. PSL2 pipes are used for more critical applications, especially those requiring higher resistance to cracking or for sour service.