Geothermal Coil Pipe
Our Dafugui Geothermal Coil Pipe uses high-quality materials like duplex stainless steel, coupled with precise welding processes and bright annealing treatment. With this complete set, our product is truly amazing. It can withstand the corrosion of groundwater and easily cope with various stresses encountered during installation and use. Its quality is top-notch, so you can purchase it with confidence.
The core advantage of our Dafugui Geothermal Coil Pipe is its robust material composition. It primarily uses S32205 and S32750 duplex steel, as well as corrosion-resistant alloys 825 and 625. Our coils can reach lengths of up to 33,000 feet (approximately 10,000 meters) per roll. This means that when installing on the seabed or in wells, you can significantly reduce connection points and greatly lower the risk of leaks.
Parameter
| UNS Name | C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
| Maximum | Maximum | Maximum | Maximum | Maximum | ||||||
| S31803 | 0.03 | 1 | 2 | 0.03 | 0.02 | 21.0 - 23.0 | 4.5 - 6.5 | 2.5 - 3.5 | 0.08 - 0.20 | - |
| 2205 | ||||||||||
| S32205 | 0.03 | 1 | 2 | 0.03 | 0.02 | 22.0 - 23.0 | 4.5 - 6.5 | 3.0 - 3.5 | 0.14 - 0.20 | - |
| S32750 | 0.03 | 0.8 | 1.2 | 0.035 | 0.02 | 24.0 - 26.0 | 6.0 - 8.0 | 3.0 - 5.0 | 0.24 - 0.32 | maximum 0.5 |
| 2507 | ||||||||||
| S32760 | 0.05 | 1 | 1 | 0.03 | 0.01 | 24.0 - 26.0 | 6.0 - 8.0 | 3.0 - 4.0 | 0.20 - 0.30 | 0.50 -1.00 |
| Steel Grade | Physical Properties | |||
| YS | TS | EL. | HRB | |
| S31803 | ≥450 | ≥620 | ≥25 | - |
| S32205/2205 | ≥450 | ≥620 | ≥25 | - |
| S32750/2507 | ≥550 | ≥800 | ≥15 | ≤32 |
| S32760 | ≥550 | ≥750 | ≥45 | ≤29 |
Applications
Geothermal Coil Pipe has been successfully used in various heat exchangers and in harsh subsea and downhole conditions. Through continuous research and development, it fully meets the most stringent quality requirements of the oil industry.
We have a complete production system and quality management process. Our production base is equipped with advanced welding equipment and precision annealing production lines to ensure that every meter of coil meets the highest quality standards. More than ten years of industry experience have given us a deep understanding of the specific needs of geothermal projects.
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No.25 Xingchao Road, Sidao'er Road, Binhai Park, Longwan District, Wenzhou City, Zhejiang Province, China
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Dafugui is a leading China manufacturer and supplier of flanges, valves, and pipe fittings since 2006. Welcome to our website! For inquiries about our products or pricelist, please leave your email to us and we will be in touch within 24 hours.
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