This browser does not support the video element.
ASTM A789 Duplex Steel 2507/S32750 Seamless Coil Tubing is an alloy steel tube with excellent properties designed to provide outstanding corrosion resistance and strength under extreme conditions. Its high chromium and molybdenum content allows it to excel in harsh corrosive environments and is widely used in oil and gas, chemical, and offshore applications.
| | |
| UNS Designation | C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
| max | max | max | max | max | ||||||
| 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 | 0.5 max |
| 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 Property | |||
| Y.S | T.S | EL. | HRB | |
| S31803 | ≥450 | ≥620 | ≥25 | - |
| S32205/2205 | ≥450 | ≥620 | ≥25 | - |
| S32750/2507 | ≥550 | ≥800 | ≥15 | ≤32 |
| S32760 | ≥550 | ≥750 | ≥45 | ≤29 |
No Leakage Risk: Since seamless coils have no welded seams, the risk of leakage caused by welded joints is eliminated, improving system reliability.
High Strength: Seamless coils are molded by cold drawing or hot rolling process during the manufacturing process, which provides higher strength and better mechanical properties to withstand high pressure and high stress environments.
Uniform structure: Seamless coiled tubes have a uniform internal structure and are free of welding defects such as porosity and inclusions, which ensures the integrity and consistency of the tubes, making them suitable for applications with high precision requirements.
Excellent corrosion resistance: Especially in duplex stainless steel materials like 2507/S32750, its high chromium and molybdenum content provides excellent corrosion resistance, suitable for use in corrosive media and harsh environments.
Flexibility and ductility: Seamless coils can be produced in longer continuous sections, reducing the number of connections and fittings and improving installation efficiency and system integrity. In addition, the coil form is easy to transport and install on site.
Higher Pressure Tolerance: Seamless coils have superior performance under high pressure and are widely used in high-pressure fluid transfer and high-pressure equipment, ensuring safe and stable system operation.
High temperature resistance: Seamless coils can maintain good mechanical properties and corrosion resistance in high temperature environments, making them suitable for high temperature process piping systems.
Economic benefits: Although initial costs may be high, the high durability and low maintenance requirements of seamless coils reduce overall operating costs and provide long-term economic benefits.
Widely applicable: Seamless coils can be used in a wide range of industries such as oil and gas, chemical, pharmaceutical, food processing, heat exchangers, boiler piping, etc., adapting to the needs of many complex working conditions.