Leading Supplier, Stockist and Exporter of Flanges
Girnar Pipes Fittings is a reputed and trusted name as a leading supplier, stockist, and exporter of premium quality flanges. With years of industry expertise and a strong distribution network, we cater to diverse industrial requirements across the globe. Our flanges are widely used in piping systems to connect pipes, valves, pumps, and other equipment, ensuring leak-proof and reliable performance.
We offer an extensive range of flanges manufactured using high-grade raw materials such as stainless steel, carbon steel, alloy steel, duplex steel, and other special alloys. Our product portfolio includes slip-on flanges, weld neck flanges, blind flanges, socket weld flanges, lap joint flanges, and threaded flanges, all produced in compliance with international standards such as ANSI, ASME, DIN, EN, and BS.
At Girnar Pipes Fittings, quality is our top priority. Each flange undergoes strict quality checks including dimensional accuracy, surface finish inspection, pressure testing, and material traceability. Our flanges are known for excellent corrosion resistance, high tensile strength, durability, and precise dimensional tolerances, making them suitable for critical and high-pressure applications.
As a global exporter of flanges, we serve clients across Asia, Europe, the Middle East, Africa, and the Americas. Our efficient logistics management, secure packaging, and timely delivery ensure that products reach customers safely and within committed timelines. We maintain a large ready stock to meet urgent and bulk requirements without compromising quality.
Our flanges are widely used in industries such as oil and gas, petrochemicals, power plants, refineries, chemical processing, water treatment, shipbuilding, and construction. Girnar Pipes Fittings continues to build long-term relationships with customers by offering competitive pricing, customized solutions, and exceptional after-sales support.
Specifications of Flanges
| Material | Standards | Types |
|---|---|---|
| Stainless Steel (304, 304L, 316, 316L, 321, 310, 347) | ASTM A182 / ASME SA182, ANSI B16.5, B16.47, MSS-SP44 | Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint, RTJ |
| Carbon Steel (A105, A350 LF2, A516 Gr.70) | ASTM A105 / A350, ANSI B16.5, B16.47 | Weld Neck, Slip-On, Blind, Threaded, Long Weld Neck |
| Alloy Steel (F11, F22, F5, 4130, 4140) | ASTM A182 F11/F22/F5, ASME B16.5 | WN, SO, BL, High-Pressure RTJ Flanges |
| Duplex and Super Duplex (S31803, 2205, 2507) | ASTM A182 F51/F53/F55 | Weld Neck, Blind, Slip-On, RTJ |
| Nickel Alloys (Inconel, Monel, Hastelloy) | ASTM B564 | WN, SO, BL, SW, RTJ |
| Cast Iron / Ductile Iron | EN 1092-2, IS Standards | PN6 / PN10 / PN16 Flanges |
| PVC / UPVC / CPVC / HDPE | ASTM D1785 / F441 / ISO 4427 | Backing Ring Flanges, Stub End Flanges |
Chemical Composition of Flange Materials
| Material | C% | Mn% | Si% | Cr% | Ni% | Mo% |
|---|---|---|---|---|---|---|
| SS 304 / 304L | 0.03 | 2.00 | 0.75 | 18–20 | 8–10.5 | - |
| SS 316 / 316L | 0.03 | 2.00 | 0.75 | 16–18 | 10–14 | 2–3 |
| Carbon Steel A105 | 0.35 | 0.60–1.05 | 0.10–0.35 | - | - | - |
| Alloy Steel F22 | 0.15 | 0.30–0.60 | 0.50 | 2.00–2.50 | - | 0.90–1.20 |
| Duplex 2205 | 0.03 | 2.00 | 1.00 | 22 | 5.5 | 3.0 |
Mechanical Properties of Flanges
| Material | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| SS 304 / 304L | 515 | 205 | 40 | 160 |
| SS 316 / 316L | 520 | 205 | 40 | 150 |
| Carbon Steel A105 | 485 | 250 | 22 | 187 |
| Alloy Steel F22 | 620 | 415 | 20 | 200 |
| Duplex 2205 | 620 | 450 | 25 | 290 |
Equivalent Grades of Flange Materials
| Material | UNS | Werkstoff Nr. | EN | JIS |
|---|---|---|---|---|
| SS 304 | S30400 | 1.4301 | X5CrNi18-10 | SUS304 |
| SS 316 | S31600 | 1.4401 | X5CrNiMo17-12-2 | SUS316 |
| Carbon Steel A105 | - | - | C22.8 | - |
| Alloy Steel F22 | K21590 | 1.7380 | 10CrMo9-10 | - |
| Duplex 2205 | S32205 | 1.4462 | X2CrNiMoN22-5-3 | - |
Flange Dimension Chart (ASME B16.5)
| NPS (Inch) | OD (mm) | Bolt Circle (mm) | Number of Bolts | Bolt Size |
|---|---|---|---|---|
| 1/2" | 90 | 60.3 | 4 | M12 |
| 1" | 125 | 85 | 4 | M12 |
| 2" | 150 | 120.5 | 4 | M16 |
| 4" | 230 | 190.5 | 8 | M16 |
| 6" | 280 | 241.5 | 8 | M20 |
| 8" | 345 | 298.5 | 8 | M20 |
| 12" | 490 | 444.5 | 12 | M24 |
With a customer-centric approach and commitment to excellence, Girnar Pipes Fittings has established itself as a reliable global supplier of flanges. We continuously strive to enhance product quality, expand our export reach, and meet the evolving needs of industries worldwide.
Uses of Flanges
Flanges are essential components used in piping systems to ensure safe, leak-free, and efficient fluid or gas transfer across various industries. They connect, control, regulate, and support pipelines operating under different temperature and pressure conditions.
1. Oil and Gas Industry
Flanges are widely used in onshore and offshore drilling operations, refinery pipeline systems, gas distribution networks, and high-pressure fluid transfer. Their corrosion resistance and temperature tolerance make them ideal for harsh environments.
2. Petrochemical and Chemical Industry
These fittings are crucial in chemical processing plants, acid/alkali lines, solvent transfer systems, and hazardous chemical handling. Materials are selected based on corrosion resistance and compatibility with chemicals.
3. Power Generation Industry
Flanges are used in boiler lines, steam pipelines, turbine systems, and cooling water networks. They withstand high pressure and extreme temperatures in thermal, nuclear, and renewable energy plants.
4. Water Treatment and Desalination Plants
Applications include RO systems, filtration units, pumping stations, and municipal water supply lines. Fittings provide durability, corrosion resistance, and long-term leak-proof performance.
5. Food and Beverage Industry
Stainless steel sanitary fittings ensure hygienic flow in dairy units, breweries, beverage manufacturing, and food processing systems. They prevent contamination and meet high hygiene standards.
6. Pharmaceutical Industry
Flanges are used in cleanroom piping, purified water systems, drug manufacturing units, and sterile processing operations. They comply with GMP and maintain contamination-free fluid handling.
7. Construction and Infrastructure
Used in firefighting systems, HVAC networks, plumbing systems, and building pipelines. Flanges ensure reliable flow and structural stability across large infrastructure projects.
8. Marine and Shipbuilding
Marine-grade fittings are used in seawater pipelines, ballast systems, and fuel/oil transfer lines. They offer high resistance to corrosion in saltwater environments.
9. Automotive and Aerospace
Essential for fuel injection lines, hydraulic systems, coolant pipelines, and high-pressure circuits. They withstand vibration, heat, and pressure fluctuations in vehicles and aircraft.
10. Mining and Metal Processing
Flanges are used in slurry pipelines, ore processing systems, and high-abrasion environments. Alloy steel fittings provide strength, wear resistance, and durability.
Frequently Asked Questions (FAQ)
Q1. What types of flanges does Girnar Pipes Fittings supply?
We supply a wide range of flanges including weld neck flanges, slip-on flanges, blind flanges, socket weld flanges, threaded flanges, and lap joint flanges in various sizes and pressure ratings.
Q2. Which materials are used for manufacturing flanges?
Our flanges are manufactured using stainless steel, carbon steel, alloy steel, duplex steel, super duplex steel, and other special alloys as per customer requirements.
Q3. Do you export flanges internationally?
Yes, Girnar Pipes Fittings is a global exporter of flanges and supplies products to customers across multiple countries worldwide with reliable logistics and secure packaging.
Q4. Are your flanges compliant with international standards?
Yes, our flanges are manufactured and tested according to international standards such as ANSI, ASME, DIN, EN, and BS to ensure quality and performance.
Q5. Can you provide customized flanges?
Yes, we offer customized flanges based on size, material grade, pressure class, and surface finish as per client specifications.
Our Global Export and Supply Network
Girnar Pipes Fittings proudly supplies products across international markets and major industrial cities worldwide.