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High-Strength Welded Neck Flanges For Critical Piping Systems
Nikkon Pipe & Tubes LLC SPC supplies precision-engineered welded neck flanges designed for secure, high-strength connections in high-pressure, high-temperature and demanding industrial piping applications.
Welded Neck Flanges
Reliable Flanges For High-Pressure Applications
Welded neck flanges are designed with a long tapered hub that provides a strong and reliable connection between the flange and pipe. Their design helps distribute stress across the connection, making them particularly suitable for demanding piping systems. Manufactured with quality carbon steel and precision-engineered for dimensional accuracy, our flanges are suitable for applications involving high pressure, heavy-duty operation and demanding service conditions.
Nikkon’s welded neck flanges are manufactured with precision and supplied in a variety of sizes, pressure classes and material options. Backed by the manufacturing expertise of Nikkon Forge Industries, they are designed to provide dimensional accuracy, structural strength and dependable long-term performance.
Welded Neck Flanges Specifications
Our welded neck flanges are manufactured to meet demanding piping requirements, offering reliable performance across high-pressure and high-temperature applications.
| Standards | ASME B16.5, ASME B16.47, MSS SP-44, EN 1092-1, DIN, JIS and other applicable standards |
|---|---|
| Size Range | 1/2" to 24" as per ASME B16.5. Larger sizes can be supplied according to applicable standards and project requirements. |
| Pressure Classes | Class 150, 300, 400, 600, 900, 1500 and 2500 |
| Flange Type | Weld Neck Flanges |
| Facing | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) and other facing configurations as required |
| Connection Type | Butt Weld Connection |
| Manufacturing Process | Forging, Heat Treatment, CNC Machining and Precision Finishing |
| Dimensions | ASME B16.5, ASME B16.47, EN 1092-1, DIN, JIS and customer-specific requirements |
| Surface Finish | As per applicable standard and customer requirements |
| Inspection & Testing | Visual Inspection, Dimensional Inspection, Material Testing, Non-Destructive Testing and Third Party Inspection as required |
| Applications | Oil & Gas, Petrochemical, Chemical Processing, Power Generation, Marine, Offshore and Heavy Engineering |
Welded Neck Flange Grades
Welded neck flanges are available in a range of material grades selected according to operating conditions, pressure, temperature and application.
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Carbon Steel Grades |
ASTM A105 / ASME SA105, ASTM A350 LF2 and other applicable carbon steel grades |
|---|---|
|
Stainless Steel Grades |
ASTM A182 F304, F304L, F316, F316L, F321, F347 and other applicable stainless steel grades |
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Alloy Steel Grades |
ASTM A182 F5, F9, F11, F12, F22, F91 and other applicable alloy steel grades |
|
Duplex Stainless Steel |
ASTM A182 F51, F53, F55 and equivalent duplex and super duplex grades |
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Nickel Alloy Grades |
Nickel 200, Nickel 201, Inconel 600, Inconel 625, Inconel 825, Monel 400 and other applicable grades |
|
Custom Material Requirements |
Other material grades can be supplied according to applicable standards, project specifications and customer requirements. |
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