Spiral Welded Pipes for Underground Gas Pipelines EN10219
Our spiral welded pipes are the ideal solution for projects where corrosion resistance and structural integrity are critical. The unique spiral welding process not only enhances the strength of the pipe, but also provides a seamless surface, minimizing the risk of leaks and failures. This makes them particularly suitable for the harsh environments often encountered in underground applications.
The EN10219 standard ensures our pipes are manufactured with precision and quality, ensuring they can withstand the pressures and challenges of natural gas transportation. Focused on durability and reliability, our spiral welded pipes are designed to provide long-lasting performance, reducing the need for frequent maintenance and replacement.
Mechanical Property
| steel grade | minimum yield strength Mpa |
Tensile strength | Minimum elongation % |
Minimum impact energy J |
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| Specified thickness mm |
Specified thickness mm |
Specified thickness mm |
at test temperature of | |||||
| ＜16 | ＞16≤40 | ＜3 | ≥3≤40 | ≤40 | -20℃ | 0℃ | 20℃ | |
| S235JRH | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 |
| S275J0H | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - |
| S275J2H | 27 | - | - | |||||
| S355J0H | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
| S355J2H | 27 | - | - | |||||
| S355K2H | 40 | - | - | |||||
Chemical Composition
| Steel grade | Type of de-oxidation a | % by mass, maximum | ||||||
| Steel name | Steel number | C | C | Si | Mn | P | S | Nb |
| S235JRH | 1.0039 | FF | 0,17 | — | 1,40 | 0,040 | 0,040 | 0.009 |
| S275J0H | 1.0149 | FF | 0,20 | — | 1,50 | 0,035 | 0,035 | 0,009 |
| S275J2H | 1.0138 | FF | 0,20 | — | 1,50 | 0,030 | 0,030 | — |
| S355J0H | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
| S355J2H | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| S355K2H | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| a. The deoxidation method is designated as follows:FF: Fully killed steel containing nitrogen binding elements in amounts sufficient to bind available nitrogen (e.g. min. 0,020 % total Al or 0,015 % soluble Al).
b. The maximum value for nitrogen does not apply if the chemical composition shows a minimum total Al content of 0,020 % with a minimum Al/N ratio of 2:1, or if sufficient other N-binding elements are present. The N-binding elements shall be recorded in the Inspection Document. |
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In addition to their rugged construction, these pipes are lightweight and easy to handle, making installation more efficient and cost-effective. Whether you are undertaking a new piping project or upgrading an existing system, our spiral welded pipes offer the perfect combination of strength, flexibility, and compliance with industry standards.
Choose our spiral welded pipes for your underground gas pipeline needs and experience the peace of mind that comes with using products that meet EN10219 standards. Trust our commitment to quality and performance to ensure the safety and efficiency of your gas infrastructure.
