| Flanges Types | Weld Neck, Slip On, Long Weld Neck, Threaded, Blind, Companion, Lap Joint |
|---|---|
| Class | 150 Lbs, 300 Lbs, 600 Lbs, 900 Lbs, 1500 Lbs, 2500 Lbs Asa 150, Asa 300, Pn 6, 10, 16, 25, 40, 64, 100, 160 |
| Size | 1/2″ (15 Nb), 48″ (1200nb) Dn10~dn5000 |
| Type | Raised Face (rf), Flat Face (ff), Ring Type Joint (rtj), Lap Joint Face (ljf), Large Male Female (lmf), Small Male Female (smf), Large Tongue & Groove, Small Tongue, Groove |
Weld Neck Flanges Manufacturer in India
Smt Global Pipes & Fittings Trading L.l.c Is a leading Weld Neck Flanges manufacturer in India, offering high-quality, precision-engineered flanges designed for high-pressure and high-temperature applications. Weld neck flanges feature a long, tapered hub that provides excellent reinforcement to the connection, reducing stress concentration at the weld joint. These flanges are ideal for critical applications where strength, durability, and resistance to fatigue are essential. As a Weld Neck Flanges supplier in India, we ensure that every flange meets international quality standards and is manufactured using premium materials such as stainless steel, carbon steel, and alloy steel. These flanges are commonly used in industries such as oil & gas, petrochemical, power generation, and marine applications, where robust and leak-proof connections are crucial. The smooth transition between the flange and pipe enhances the structural integrity, making them highly reliable for demanding environments. These flanges are designed for long-term performance, reducing the risk of leakage and mechanical failure. They are commonly used in pipeline systems that undergo frequent pressure fluctuations, high-temperature conditions, and corrosive environments. Their ability to evenly distribute stress makes them the preferred choice for critical piping applications.
Weld Neck Flanges – Standard Size & Weight Chart
The following table provides a general weight reference for Weld Neck Flanges commonly used in high-pressure and high-temperature piping systems. These values are approximate and intended for estimation, project planning, and procurement purposes. Actual weights may vary depending on material grade, pressure rating, dimensions, and applicable manufacturing standards.
Weld Neck Flanges
Nominal Size (NB) | Outside Diameter (mm) | Pressure Class | Approx. Weight Per Flange (Kg) | Estimated Weight (10 Flanges) (Kg) |
|---|---|---|---|---|
| ½" (15 NB) | 90 | 150# | 1.5 | 15 |
| ¾" (20 NB) | 100 | 150# | 1.9 | 19 |
| 1" (25 NB) | 110 | 150# | 2.5 | 25 |
| 1½" (40 NB) | 125 | 150# | 4.0 | 40 |
| 2" (50 NB) | 150 | 150# | 5.8 | 58 |
| 3" (80 NB) | 190 | 150# | 9.8 | 98 |
| 4" (100 NB) | 230 | 150# | 14.2 | 142 |
| 6" (150 NB) | 280 | 150# | 23.5 | 235 |
| 8" (200 NB) | 345 | 150# | 37.8 | 378 |
About Weld Neck Flanges
Weld Neck Flanges are designed with a long tapered hub that gradually transfers stress from the flange to the pipe, making them one of the most reliable flange types for critical service conditions. These flanges are butt-welded directly to the pipe, creating a strong and durable connection capable of withstanding high pressure, elevated temperatures, and cyclic loading.
Widely used in demanding industrial environments, weld neck flanges offer excellent structural integrity and superior performance where safety and reliability are essential. Their design minimizes turbulence and erosion within the piping system, making them suitable for applications involving corrosive fluids, high-pressure media, and extreme operating conditions.
Type of Sub-products
Frequently Asked Questions
Where are Weld Neck Flanges used?
How do Weld Neck Flanges differ from other flange types?
Countries We Export
India
Cities We Supply
Ahmadnagar
Ahmadpur
Ahmedabad
Bangalore Rural
Bangalore Urban
Bengaluru
Chandigarh
Chennai
Coimbatore
Haridwar
Hyderabad
Jaipur
Jodhpur
Jodhpur (ahmedabad)
Kalyan
Kolhapur
Kolkata
Lucknow
Mumbai
Mumbai Suburban
Murud (raigad)
Nagpur
Nashik
Navi Mumbai
New Delhi
Pune
Raipur
Rajkot
Rampura
Sion, Mumbai
Surat
Thane
Varanasi
Visakhapatnam
Moradabad
Angul
Rudrapur
Hosdurg
Gandhinagar
Rajahmundry
Durgapur
Bharuch
Panipat
Industries We Serve
Sugar
Oil And Gas Industries
Paper Mill
Power Plant
Bridge And Building
Aerospace Industries
Automobile Industry
Electrical Industry
Defense Industry
Construction & Fabrications
Ring Man Units
Railways

Gasket Industry
Pharmaceuticals Industry
