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Weld Neck Flanges Manufacturer In India–high Quality Industrial Pipe Flanges

Weld Neck Flanges Manufacturer In India–high Quality Industrial Pipe Flanges

Specification Details
Flanges TypesWeld Neck, Slip On, Long Weld Neck, Threaded, Blind, Companion, Lap Joint
Class150 Lbs, 300 Lbs, 600 Lbs, 900 Lbs, 1500 Lbs, 2500 Lbs Asa 150, Asa 300, Pn 6, 10, 16, 25, 40, 64, 100, 160
Size1/2″ (15 Nb), 48″ (1200nb) Dn10~dn5000
TypeRaised 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)90150#1.515
¾" (20 NB)100150#1.919
1" (25 NB)110150#2.525
1½" (40 NB)125150#4.040
2" (50 NB)150150#5.858
3" (80 NB)190150#9.898
4" (100 NB)230150#14.2142
6" (150 NB)280150#23.5235
8" (200 NB)345150#37.8378

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.



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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 industry

    Sugar

  • Oil And Gas Industries industry

    Oil And Gas Industries

  • Paper Mill industry

    Paper Mill

  • Power Plant industry

    Power Plant

  • Bridge And Building industry

    Bridge And Building

  • Aerospace Industries industry

    Aerospace Industries

  • Automobile Industry industry

    Automobile Industry

  • Electrical Industry industry

    Electrical Industry

  • Defense Industry industry

    Defense Industry

  • Construction & Fabrications industry

    Construction & Fabrications

  • Ring Man Units industry

    Ring Man Units

  • Railways industry

    Railways

  • Gasket Industry industry

    Gasket Industry

  • Pharmaceuticals Industry industry

    Pharmaceuticals Industry


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