Weld Neck Flanges Manufacturer, Supplier & Exporter
Valtron Forge & Fittings is a leading manufacturer, supplier, stockist, and exporter of premium quality Weld Neck Flanges in India. We offer a comprehensive range of weld neck flanges designed to meet international standards and the demanding requirements of industrial piping systems.
Our weld neck flanges are precision-engineered for superior strength, durability, and long service life in high-pressure and high-temperature environments.
A Weld Neck Flange (WN Flange) is a butt-weld type flange featuring a long tapered hub that is welded directly to the pipe. The tapered neck ensures smooth stress transition from flange to pipe, reducing stress concentration and enhancing structural integrity.
The bore of the flange matches the internal diameter of the pipe, ensuring smooth flow with minimal turbulence and erosion. This makes weld neck flanges ideal for critical applications where safety and reliability are essential.
Long Tapered Hub – Provides reinforcement and strength
Butt-Weld Connection – Ensures full penetration welding
Excellent Stress Distribution – Reduces risk of failure
Matching Bore Diameter – Improves flow characteristics
Available in RF, RTJ & FF Facing Types
High strength and structural integrity
Suitable for high-pressure and high-temperature applications
Excellent fatigue resistance
Leak-proof and durable performance
Long service life with minimal maintenance
Material Used in Manufacturing
- We manufacture Weld Neck Flanges in a wide range of materials depending on service conditions and project specifications:
- Steel
- Carbon Steel
- Alloy Steel
- Duplex & Super Duplex Stainless Steel
- Nickel Based Alloys
- All materials comply with standards issued by ASTM International and ASME.
Applications
- Companion flanges are ideal for:
- Fire sprinkler systems
- Mechanical rooms
- Pump and valve connections
- Compressed air systems
- Industrial piping networks
Standards and Specification
| Parameter | Specification |
|---|---|
| Manufacturing Standards | ANSI, ASME B16.5, ASME B16.47, DIN, EN 1092-1, BS 4504, JIS, UNI, SABS 1123, GOST |
| Material Standards | ASTM A105, ASTM A182, ASTM A350, ASTM A694, ASTM B564 |
| International Codes | ASME, ASTM International |
| Pressure Classes (ANSI) | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Pressure Ratings (PN) | PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250 |
| Size Ranges | ½” NB to 60” NB |
| Facing Types | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF) |
| End Connections | Butt-Weld (BW) |
| Inspection & Testing | PMI Testing, Hardness Test, Impact Test, Hydrostatic Test, Dimensional Inspection, Visual Inspection |
| Certification | Mill Test Certificate (EN 10204 3.1 / 3.2), Third-Party Inspection (TPI) |
Why Choose Valtron Forge & Fittings?
- Compact and strong design for tight piping layouts.
- High-performance materials for durability and corrosion resistance.
- Rigorous quality control including hydrostatic and dimensional testing.
- Long service life with minimal maintenance for critical piping systems.
- Weld Neck Flanges from Valtron Forge & Fittings provide reliable flow distribution, mechanical strength, and compliance with international standards, making them suitable for demanding industrial and process piping systems.
