Spiral welded pipes For Underground Natural Gas Line
Spiral welded pipes are essential in industry, especially in the construction of oil and gas transmission pipelines. Their specifications are expressed in outer diameter and wall thickness, demonstrating their versatility and adaptability to a variety of piping requirements.
|
Standard |
Steel grade |
Chemical composition |
Tensile properties |
Charpy Impact Test and Drop Weight Tear Test |
||||||||||||||
| C | Si | Mn | P | S | V | Nb | Ti | CEV4)（%） | Rt0.5 Mpa Yield strength | Rm Mpa Tensile Strength | Rt0.5/ Rm | （L0=5.65 √ S0 ）Elongation A% | ||||||
| max | max | max | max | max | max | max | max | Other | max | min | max | min | max | max | min | |||
| L245MB |
0.22 |
0.45 |
1.2 |
0.025 |
0.15 |
0.05 |
0.05 |
0.04 |
1) |
0.4 |
245 |
450 |
415 |
760 |
0.93 |
22 |
Charpy impact test: Impact absorbing energy of pipe body and weld seam shall be tested as required in the original standard. For details, see the original standard. Drop weight tear test: Optional shearing area |
|
|
GB/T9711-2011（PSL2） |
L290MB |
0.22 |
0.45 |
1.3 |
0.025 |
0.015 |
0.05 |
0.05 |
0.04 |
1) |
0.4 |
290 |
495 |
415 |
21 |
|||
| L320MB |
0.22 |
0.45 |
1.3 |
0.025 |
0.015 |
0.05 |
0.05 |
0.04 |
1) |
0.41 |
320 |
500 |
430 |
21 |
||||
| L360MB |
0.22 |
0.45 |
1.4 |
0.025 |
0.015 |
1) |
0.41 |
360 |
530 |
460 |
20 |
|||||||
| L390MB |
0.22 |
0.45 |
1.4 |
0.025 |
0.15 |
1) |
0.41 |
390 |
545 |
490 |
20 |
|||||||
| L415MB |
0.12 |
0.45 |
1.6 |
0.025 |
0.015 |
1)2)3 |
0.42 |
415 |
565 |
520 |
18 |
|||||||
| L450MB |
0.12 |
0.45 |
1.6 |
0.025 |
0.015 |
1)2)3 |
0.43 |
450 |
600 |
535 |
18 |
|||||||
| L485MB |
0.12 |
0.45 |
1.7 |
0.025 |
0.015 |
1)2)3 |
0.43 |
485 |
635 |
570 |
18 |
|||||||
| L555MB |
0.12 |
0.45 |
1.85 |
0.025 |
0.015 |
1)2)3 | Negotiation |
555 |
705 |
625 |
825 |
0.95 |
18 |
|||||
| Note: | ||||||||||||||||||
| 1）0.015 ≤ Altot ＜ 0.060；N ≤ 0.012；AI—N ≥ 2—1；Cu ≤ 0.25；Ni ≤ 0.30；Cr ≤ 0.30；Mo ≤ 0.10 | ||||||||||||||||||
| 2）V+Nb+Ti ≤ 0.015% | ||||||||||||||||||
| 3）For all steel grades, Mo may ≤ 0.35%, under a contract. | ||||||||||||||||||
| 4）CEV=C+ Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/5 | ||||||||||||||||||
The manufacturing process of spiral welded pipe involves the use of advanced pipe welding technology, producing single- or double-sided welded pipes. These welding processes ensure maximum durability and reliability of the pipeline, capable of withstanding the rigors of underground natural gas line transmission.
At our production facility, we guarantee that our spiral welded pipes undergo stringent quality assurance testing to ensure their superior performance standards. It is critical that welded pipe meets regulations for hydraulic testing, tensile strength and cold bending properties.
Our spiral welded pipes are designed to exceed industry standards and meet the most stringent requirements of underground natural gas line transmission systems. They are designed to withstand a wide range of environmental conditions, ensuring long-term durability and safety in any application.
The application of spiral welded pipes in underground natural gas line transportation systems provides an effective and efficient method of natural gas transportation. The inherent durability of spiral-welded construction ensures gas delivery and minimizes the risk of leakage or corrosion over time, giving peace of mind to operators and end users.
We are committed to providing our customers with the highest quality products, and our spiral welded pipes are a testament to our commitment to industry excellence. We prioritize the durability, performance and safety of our products, ensuring they meet and exceed the stringent requirements of underground natural gas line transmission systems.
In summary, our spiral welded pipes are an indispensable component in the construction and maintenance of underground natural gas line transportation systems. With its superior construction, compliance with industry standards, and unwavering commitment to quality, our spiral welded pipe is ideal for any natural gas transmission project. Partner with us to provide the highest quality spiral welded pipe for your underground natural gas pipeline transmission needs.
