Big Diameter LSAW API 5L Steel Pipe
First-class welded pipe production process
API 5L Pipe Standard Scope
In API SPEC 5L 46th Edition, the standard scope is defined as: "Requirements for the manufacture of two product specification levels (PSL1 and PSL2) of seamless and welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries. This standard does not apply to cast pipe."
To summarize, API 5L pipe is the carbon steel pipe applied to the oil and gas transmission system. Meanwhile, other fluids such as steam, water, and slurry can also adopt the API 5L standard for their transmission purposes.
Latest technology in the production of welded pipes


Common Types of API 5L Welded Pipe
ERW: Electric Resistance Welding, used for pipes typically less than 24 inches in diameter.
DSAW/SAW: Double Side Submerged Arc Welding/Submerged Arc Welding, an alternative to ERW, for larger diameters.
LSAW: Longitudinal Submerged Arc Welding for pipe diameters up to 48 inches. Also known as the JCOE manufacturing process.
SSAW/HSAW: Spiral Seam Submerged Arc Welding/Spiral Seam Submerged Arc Welding for pipe diameters up to 100 inches.
Pipe Size
|
Nominal diameter |
Wall Thickness |
|||||||
|
DN |
Pipe |
Finttings |
||||||
|
ClassC |
K8 |
K9 |
K10 |
K12 |
K12 |
K14 |
||
|
80 |
4.4 |
6.O |
6.0 |
7.0 |
8.1 |
|||
|
100 |
4.4 |
6.1 |
7.2 |
8.4 |
||||
|
125 |
4.5 |
6.3 |
7.5 |
8.8 |
||||
|
150 |
4.5 |
6.3 |
7.8 |
9.1 |
||||
|
200 |
4.7 |
6.4 |
8.4 |
9.8 |
||||
|
250 |
5.5 |
6.8 |
7.5 |
9.0 |
9.0 |
10.5 |
||
|
300 |
6.2 |
6.4 |
7.2 |
8.0 |
9.6 |
9.6 |
11.2 |
|
|
350 |
6.3 |
6.8 |
7.7 |
8.5 |
10.2 |
10.2 |
11.9 |
|
|
400 |
6.5 |
7.2 |
8.1 |
9.0 |
10.8 |
10.8 |
12.6 |
|
|
450 |
6.9 |
7.6 |
8.6 |
9.5 |
11.4 |
11.4 |
13.3 |
|
|
500 |
7.5 |
8.0 |
9.0 |
10.0 |
12.0 |
12.0 |
14.0 |
|
|
600 |
8.7 |
8.8 |
9.9 |
11.0 |
13.2 |
13.2 |
15.4 |
|
|
700 |
8.6 |
9.6 |
10.8 |
12.0 |
14.4 |
14.4 |
16.8 |
|
|
800 |
9.6 |
10.4 |
11.7 |
13.0 |
15.6 |
15.6 |
18.2 |
|
|
900 |
11.6 |
11.2 |
12.6 |
14.0 |
16.8 |
16.8 |
19.6 |
|
|
1000 |
12.6 |
12.0 |
13.5 |
15.0 |
18.0 |
18.0 |
21.0 |
|
|
1200 |
13.6 |
13.6 |
15.3 |
17.0 |
20.4 |
20.4 |
22.8 |
|
|
1400 |
15.7 |
15.2 |
17.1 |
19.0 |
22.8 |
22.8 |
26.6 |
|
|
1500 |
16.7 |
16.0 |
18.0 |
20.0 |
24.0 |
24.0 |
31.0 |
|
|
1600 |
17.7 |
18.8 |
18.9 |
21.0 |
25.2 |
25.2 |
29.4 |
|
|
1800 |
19.7 |
18.4 |
20.7 |
23.0 |
27.6 |
27.6 |
32.2 |
|
|
2000 |
21.8 |
20.0 |
22.5 |
25.0 |
30.0 |
30.0 |
35.0 |
|
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Team Advantage
We have a team of highly skilled professionals dedicated to providing high quality products and services to our customers. Our team has several advantages over our competitors, including:
Technical Expertise:Our team has excellent technical expertise in manufacturing Welded Steel Tubes.
Experience:Our team has years of industry experience and a deep understanding of the market.
Customer Oriented:We are customer oriented and prioritize the needs of our clients.
Responsiveness:Our team is responsive and provides quick solutions to any issues that occur.
All of our welded pipes can be treated with black paint, 3PE, 3PP, galvanized, etc. If you need, please contact us immediately!
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