Long Weld Neck Flange Manufacturer In India As Per Astm A105, Astm A350 Lf2 & Astm A182 F304, F304l, F316, F316l
| Flanges Types | Slip On, Weld Neck, Long Weld Neck, Threaded, Blind, Companion, Lap Joint |
|---|---|
| Class | Asa 300, 2500 Lbs Asa 150, 900 Lbs, 600 Lbs, 300 Lbs, 150 Lbs, 160, 1500 Lbs, Pn 6, 10, 16, 25, 40, 100, 64 |
| Size | 1/2″ (15 Nb), 48″ (1200nb) Dn10~dn5000 |
| Type | Raised Face (rf), Small Tongue, Groove, Flat Face (ff), Ring Type Joint (rtj), Large Male Female (lmf), Lap Joint Face (ljf), Small Male Female (smf), Large Tongue & Groove |
Long Weld Neck Flange Manufacturer in India in Compliance with ASTM A105, ASTM A350 LF2 and ASTM A182 F304L, F316L Grades
Key Manufacturing Advantages
- Extended neck design for improved stress distribution
- Accurate machining for strong and reliable weld connections
- Suitable for high-pressure and high-temperature systems
- Wide size and material availability
- Strict quality inspection and testing standards
Material & Grade Specifications for Long Weld Neck Flange
Material Type | Grade / Specification | Standard Reference | Application Area |
|---|---|---|---|
| Carbon Steel | ASTM A105 | ASME / ANSI | Oil & gas pipelines |
| Alloy Steel | ASTM A182 F5 | ASME B16 Series | High-temperature service |
| Low Alloy Steel | ASTM A350 LF2 | ANSI Standards | Low-temperature systems |
| Stainless Steel | ASTM A182 F304 / F316 | ASME / API | Chemical processing |
| Chrome Alloy Steel | ASTM A182 F11 | ASME B16 | Power plant piping |
Long Weld Neck Flange Product Supplied Quantity by City
Manufacturing City | Monthly Supply Capacity (MT) | Major Industry Served |
|---|---|---|
| Mumbai | 166 Pcs | Oil & Gas Export |
| Ahmedabad | 188 Pcs | Petrochemical |
| Chennai | 195 Pcs | Power & Offshore |
| Pune | 175 Pcs | Heavy Engineering |
| Hyderabad | 198 Pcs | Industrial EPC |
With a strong focus on engineering precision, material quality, and customer-focused service, continues to support demanding pipeline projects worldwide. Its capability to meet international standards while maintaining competitive supply timelines makes it a trusted name in the global piping industry.
Type of Sub-products
Standard Long Weld Neck Flange Standard Long Weld Neck Flange
The most common style, featuring a straight, extended neck that gradually tapers to the pipe wall. Ideal for pressure vessels, heat exchangers, and nozzles where stress distribution and smooth flow transition are critical.
Heavy Barrel Long Weld Neck Flange Heavy Barrel Long Weld Neck Flange
Built with a thicker, reinforced neck wall for very high pressure or heavy mechanical loads. Frequently used on reactor vessels, tall distillation columns, and high stress piping systems.
Tapered Neck Long Weld Flange Tapered Neck Long Weld Flange
Features a gradually tapered neck for optimal stress transfer in high temperature and cyclic loading applications such as steam drums and superheaters.