Ring Joint Flanges (RTJ Flanges) are specialized high-pressure flanges widely used in industries requiring leak-proof, reliable connections under extreme conditions, such as oil, gas, petrochemical, and power plants. Unlike standard flanges, RTJ flanges use a metal ring gasket fitted into a machined groove to ensure a superior seal capable of withstanding high pressures and temperatures. These flanges are typically designed to meet API, ASME, ANSI, and ASTM standards, making them suitable for critical applications where safety and performance are paramount. The precision machining of the ring groove ensures consistent gasket compression, reducing the risk of leakage even under fluctuating thermal and pressure conditions. Ring Joint Flanges are available in a variety of designs including Raised Face (RF), Flat Face (FF), and Ring Type Groove (RTG) to match specific operational requirements.
Neonox Overseas manufactures RTJ Flanges in a wide range of materials to cater to diverse industrial needs. Commonly used materials include Carbon Steel, Stainless Steel (304/304L/316/316L), Alloy Steel, Duplex, and Super Duplex Steel, each selected for its mechanical strength, corrosion resistance, and durability in harsh environments. Carbon Steel RTJ Flanges are ideal for high-pressure service in non-corrosive conditions, while Stainless Steel variants offer excellent resistance to oxidation, acids, and other corrosive agents. Alloy steels and duplex steels provide superior strength and longevity in extreme conditions such as offshore or high-temperature applications.
The flanges are available in different types such as Weld Neck, Slip-On, Socket Weld, Blind, and Threaded RTJ Flanges, offering flexibility for various piping configurations. Weld Neck RTJ Flanges are particularly suited for high-pressure systems due to their ability to distribute stress evenly along the pipe and flange interface. Slip-On and Socket Weld RTJ Flanges offer easier installation and are preferred in applications requiring quick assembly and maintenance. Blind RTJ Flanges are used to close the ends of pipelines, providing a reliable seal while allowing for inspection and maintenance. Threaded RTJ Flanges are ideal for low-pressure systems where welding is not feasible.
Neonox Overseas ensures that each RTJ Flange undergoes stringent quality checks, including dimensional inspection, surface finish assessment, and pressure testing, to guarantee optimal performance. Available in standard sizes ranging from 1/2” to 60” and in pressure ratings from ANSI 150 to 2500, these flanges are designed to seamlessly integrate into existing piping systems while maintaining long-term reliability. By combining superior materials, precision engineering, and rigorous quality standards, Neonox Overseas delivers Ring Joint Flanges that meet the most demanding industrial requirements.
| Flange Type | Material | Standard | Size Range (inches) | Pressure Rating | Face Type | Applications |
|---|---|---|---|---|---|---|
| Weld Neck RTJ Flange | Carbon Steel | ASME B16.5 / API 6A | 1/2" – 60" | 150 – 2500# | Ring Type Groove | Oil & Gas, Petrochemical, High Pressure Piping |
| Slip-On RTJ Flange | Stainless Steel 304/316 | ASME B16.5 / ASTM A182 | 1/2" – 48" | 150 – 1500# | Ring Type Groove | Corrosive and High-Temperature Environments |
| Socket Weld RTJ Flange | Alloy Steel (A105 / F22) | ASME B16.5 / ASTM A182 | 1/2" – 24" | 150 – 2500# | Ring Type Groove | High-Pressure Piping, Industrial Systems |
| Blind RTJ Flange | Duplex / Super Duplex Steel | ASME B16.5 / API 6A | 1/2" – 48" | 300 – 2500# | Ring Type Groove | Pipeline End Closure, Inspection, and Maintenance |
| Threaded RTJ Flange | Carbon Steel / Stainless Steel | ASME B16.5 / ASTM A182 | 1/2" – 24" | 150 – 900# | Ring Type Groove | Low-Pressure Systems, Easy Installation without Welding |
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