Nakamura Stainless, located in Pulau Ujong, Singapore, is a respected manufacturer and supplier of precision stainless steel components. One of its main products, the Stainless Steel Weld Neck Flange, is built for high-pressure and high-temperature applications that require strong, leak-proof connections. With its extended neck welded directly to the pipe, this flange ensures smooth flow and minimizes stress concentration at the base. Manufactured to international standards, Nakamura Stainless provides weld neck flanges that are widely trusted in industries such as oil and gas, petrochemical, power generation, and offshore operations.
Stainless Steel Weld Neck Flanges are usually made from grades like SS 304, SS 316, or 904L. These grades contain 18–20% chromium, 8–14% nickel, and in some cases, 2–3% molybdenum for better corrosion resistance. These flanges have tensile strength ranging from 485–620 MPa and offer excellent durability under high pressure and temperature. The long tapered hub design spreads stress evenly between the pipe and flange, reducing the risk of fatigue failure. Their strong mechanical properties and corrosion-resistant design make them suitable for critical applications involving aggressive fluids or extreme operating conditions.
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Standards | ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings. |
| Pressure Ratings | PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Pressure class | 150#, 300#, 600#, 1500# |
| Dimensions and Pressure Ratings for Blind Flanges | MSS- SP-44, BS3293, ANSI, Table D, E, F, & H, BS4504, PN6, 10, 16, 25, 64 BS10, DIN Standards |
| Flange Face Type Manufacturer | Raised Face (RF), Flate Face (FF), Ring Type Joint (RTJ) |
| Coating/Surface Treatment | Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized. |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
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| Manufacturer of | ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc. Blind Flange: -BS, EN, API 6A, ANSI, ASME, DIN, EN1092-1, UNI, JIS/ KS , BS4504, GB, AWWA C207, GOST, PSI
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A Raised Face Weld Neck Flange features a protruding face that enhances sealing by increasing the contact area with the gasket. It provides a strong, reliable joint in high-pressure applications.
Forged Steel Weld Neck Flange is made from high-strength forged steel, providing excellent durability and performance under high pressure and temperature. Its design ensures reliable, leak-proof connections in piping systems.
JIS Weld Neck Flange conforms to Japanese Industrial Standards, offering precise dimensions and high quality. It’s designed for strong, reliable welds and optimal performance in various piping and industrial applications.
We are committed to achieving exceptional customer outcomes through the prompt delivery of high-quality Stainless Steel Weld Neck Flanges. Our products comply to rigorous safety and quality standards. Ensuring outstanding performance in all industrial applications. Each flange undergoes thorough testing to confirm its suitability for industrial use. These certifications assure clients that our Stainless Steel Weld Neck Flanges have been meticulously tested for safety and performance, with regular factory inspections and audits conducted after each performance test.
Stainless Steel Weld Neck Flanges are commonly used in industries that need dependable, high-strength connections for pipes carrying high-pressure or corrosive fluids. Typical applications include oil and gas refineries, chemical processing plants, power plants, and marine systems. These flanges are favored for pipelines where vibration, thermal expansion, and cyclic loading are issues. Their weldable design creates a permanent, secure joint, which helps reduce turbulence and pressure drop. With strong mechanical integrity and resistance to corrosion, weld neck flanges are vital for maintaining safety and efficiency in demanding piping systems.
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