Aditya Stainless stands out as a top manufacturer and supplier of Stainless Steel Ring Type Joint (RTJ) Flanges in Kolkata, India. We pride ourselves on delivering high-quality flanges that are specifically designed for high-pressure and high-temperature piping systems. Our RTJ flanges come with a precisely machined groove that accommodates a metal ring gasket, ensuring a robust, leak-proof seal. Adhering to ASME B16.5, B16.47, and ASTM standards, our stainless steel RTJ flanges guarantee dependable sealing performance in critical applications. These flanges find their place in industries like oil & gas, petrochemical, offshore drilling, power generation, and chemical processing, where leak integrity and strength are absolutely crucial.
Stainless Steel RTJ Flanges are generally crafted from various grades, including 304, 304L, 316, 316L, 321, 347, or duplex/super duplex stainless steels, tailored to meet specific application needs. Their typical composition features chromium (16–20%), nickel (8–14%), and molybdenum (up to 3%), which together provide exceptional resistance to corrosion, oxidation, and pitting. These flanges boast a tensile strength ranging from 485 to 750 MPa, a yield strength of about 170 to 450 MPa, and an elongation of 30 to 40%, depending on the grade. The impressive strength and hardness of RTJ flanges enable them to endure extreme pressures and temperatures in challenging environments.
| Size | 1/2″ to 48″ |
| Standards | MSS SP44, ASA, ANSI B16.47 Series A & B, ANSI B16.5, API-605, AWWA, Custom Drawings. |
| Pressure Ratings | PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Pressure class | 150#, 300#, 600#, 1500# |
| Dimensions | BS3293, Table D, E, F, & H, ANSI, PN6, 10, 16, 25, 64 BS10, BS4504, MSS- SP-44, DIN Standards |
| Flange Face Type Manufacturer | Ring Type Joint (RTJ) |
| Coating/Surface Treatment | Oil Black Paint, Yellow Transparent, Anti-rust Paint, Zinc Plated, Cold and Hot Dip Galvanized. |
| Test | Hydrostatic testing machine, X-ray detector, Direct-reading Spectrograph, UI trasonic flaw detector, Magnetic particle detector |
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At Aditya Stainless, the quality of our Stainless Steel RTJ Flanges undergoes rigorous testing procedures. Like hardness tests, chemical analyzing, PMI, flattening, micro/macro, pitting resistance, flaring, and IGC testing. Aditya Stainless provides its clients with essential documentation regarding commercial invoices, packing lists, certificates of origin, and guarantee letters, as well as Third-Party Inspection Certificates, which promise reliability and client satisfaction with trustworthy performance. Thus, Aditya Stainless has made a perfect partner for Stainless Steel RTJ Flanges, which provide high performance.
Stainless Steel RTJ Flanges play a vital role in high-pressure piping systems where a metal-to-metal seal is essential to prevent leaks under demanding conditions. They are commonly utilized in oil refineries, offshore platforms, subsea systems, petrochemical plants, and power generation facilities, especially in ANSI Class 600 and higher pressure ratings. RTJ flanges are ideal for hydrocarbon processing, steam lines, high-temperature reactor vessels, and critical pressure containment systems. Their design allows them to effectively manage thermal expansion, vibration, and pressure pulsation, making them perfect for the most demanding applications.
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