Navkar Precision Fittings Pvt. Ltd. manufactures Alloy Steel ASTM A182 F11 Forged Flanges, known for their exceptional strength, heat resistance, and reliability in high-temperature and high-pressure applications. These flanges are specifically designed for critical systems in power plants, petrochemical refineries, and high-pressure steam lines, where resistance to thermal cycling and oxidation is essential. Alloy Steel ASTM A182 F11 Forged Flanges ensure long-lasting durability, superior mechanical properties, and reliable performance in demanding industrial environments. Trusted by industries worldwide, F11 Forged Flanges are indispensable in sectors such as power generation, chemical processing, and heavy industrial applications.
The product range includes forged flanges, plate flanges, slip-on raised face (SORF) flanges, weld neck raised face (WNRF) flanges, socket weld raised face (SWRF) flanges, blind raised face (BLRF) flanges, orifice flanges, flat face flanges, long neck flanges, and lap joint flanges. Each type of flange is designed to deliver exceptional performance and reliability in demanding conditions, ensuring their widespread adoption in global industries.
Our flanges are trusted in Mumbai and other key cities in India, catering to critical industries. In the Middle East, countries such as Iraq, Kuwait, Jordan, Lebanon, Saudi Arabia, Yemen, Oman, and the UAE (including Abu Dhabi, Dubai, Al Ain, Ajman, Sharjah, and Ras Al Khaimah) rely on our flanges for oil and gas, water treatment, and infrastructure projects. We are also a preferred supplier in Qatar (Doha), Bahrain, Syria, Azerbaijan, and Georgia, where quality and reliability are essential.
In Europe, our flanges are widely used in Italy, Spain, Germany, the United Kingdom (England, Wales, Scotland, and Ireland), Russia, Ukraine, Kazakhstan, Turkey, France, Greece, and Austria. These regions benefit from the precision engineering and durability of our products, especially in industries like manufacturing and construction.
Across Africa, industries in Morocco, Algeria, Libya, Egypt, Nigeria, Sudan, Chad, Senegal, Kenya, Somalia, Zambia, South Africa, and Namibia trust our flanges for their high resistance to corrosion and extreme environmental conditions.
In the Americas, our products are essential in the United States, Brazil, Argentina, Mexico, and Canada, supporting industries like oil and gas, construction, and manufacturing.
In the Asia-Pacific, countries like Sri Lanka, Malaysia, Singapore, Philippines, Thailand, and Vietnam depend on our high-performance flanges for various industrial applications.
Finally, industries in Australia benefit from the durability and strength of our flanges in sectors such as mining and water treatment.
Wherever you are—be it Doha, Dubai, London, Moscow, or New York—Navkar Precision Fittings Pvt. Ltd. ensures top-quality ASTM A182 F11 Flanges, designed to meet international standards. Our global presence reflects the trust industries place in our ability to deliver reliable and durable solutions tailored to challenging environments worldwide.
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Standard
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ANSI, ASME, BS, DIN, JIS, EN
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Dimension
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ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS 4504, EN1092, UNI 2277/2278
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½" (15 NB) to 48" (1200NB)
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Class
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150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
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Materials
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Stainless Steel, Carbon Steel, Alloy Steel, High Nickel Alloys, Special Alloys, Aluminium Alloys, Copper Nickel, Titanium, Duplex & Super Duplex, Tantalum etc.
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Specification for Alloy Steel
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ASTM A182 / ASME SA182
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Specification for High Nickel Alloy
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ASTM B564 / ASME SB564
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Specification for Duplex & Super Duplex
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ASTM A182 / ASME SA182
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Specification for Stainless Steel
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ASTM A182 / ASME SA182
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Specification for Carbon Steel
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ASTM A105, A350 / ASME SA105, SA350
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Form
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SORF, BLRF, SWRF, WNRF, Orifice, Lap Joint, Spectacle Blind, Threaded Flanges.
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| NPS | O.D. of Flange | Flanges Thickness | Diameter of RF | Diameter of Hub at Base | Lengtd Tdru Hub | Bore or Diameter | Dia. of Hub at Bevel | Radius of Fillet | Deptd of Socket | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Welding (WN) Neck | Slip-On (SORF) Threaded (NPT) Socket (SWRF) | Lap Joint (Loose) | Slip-on (SORF) Socket (SWRF) | Lap Joint (Loose) | ||||||||
| O | Q | R | X | Y | Y | Y | W | B | H | r | Z | |
| 1/2 | 3-1/2 | 7/16 | 1-3/8 | 1-3/16 | 1-7/8 | 5/8 | 5/8 | .88 | .90 | .84 | 1/8 | 3/8 |
| 3/4 | 3-7/8 | 1/2 | 1-11/16 | 1-1/2 | 2-1/16 | 5/8 | 5/8 | 1.09 | 1.11 | 1.05 | 1/8 | 7/16 |
| 1 | 4-1/4 | 9/16 | 2 | 1-15/16 | 2-3/16 | 11/16 | 11/16 | 1.36 | 1.38 | 1.32 | 1/8 | 1/2 |
| 1-1/4 | 4-5/8 | 5/8 | 2-1/2 | 2-5/16 | 2-1/4 | 13/16 | 13/16 | 1.70 | 1.72 | 1.66 | 3/16 | 9/16 |
| 1-1/2 | 5 | 11/16 | 2-7/8 | 2-9/16 | 2-7/16 | 7/8 | 7/8 | 1.95 | 1.97 | 1.90 | 1/4 | 5/8 |
| 2 | 6 | 3/4 | 3-5/8 | 3-1/16 | 2-1/2 | 1 | 1 | 2.44 | 2.46 | 2.38 | 5/16 | 11/16 |
| 2-1/2 | 7 | 7/8 | 4-1/8 | 3-9/16 | 2-3/4 | 1-1/8 | 1-1/8 | 2.94 | 2.97 | 2.88 | 5/16 | 3/4 |
| 3 | 7-1/2 | 15/16 | 5 | 4-1/4 | 2-3/4 | 1-3/16 | 1-3/16 | 3.57 | 3.60 | 3.50 | 3/8 | 13/16 |
| 3-1/2 | 8-1/2 | 15/16 | 5-1/2 | 4-13/16 | 2-13/16 | 1-1/4 | 1-1/4 | 4.07 | 4.10 | 4.00 | 3/8 | 7/8 |
| 4 | 9 | 15/16 | 6-3/16 | 5-5/16 | 3 | 1-5/16 | 1-5/16 | 4.57 | 4.60 | 4.50 | 7/16 | 15/16 |
| 5 | 10 | 15/16 | 7.5/16 | 6-7/16 | 3-1/2 | 1-7/16 | 1-7/16 | 5.66 | 5.69 | 5.56 | 7/16 | 15/16 |
| 6 | 11 | 1 | 8-1/2 | 7-9/16 | 3-1/2 | 1-9/16 | 1-9/16 | 6.72 | 6.75 | 6.63 | 1/2 | 1-1/16 |
| 8 | 13-1/2 | 1-1/8 | 10-5/8 | 9-11/16 | 4 | 1-3/4 | 1-3/4 | 8.72 | 8.75 | 8.63 | 1/2 | 1-1/4 |
| 10 | 16 | 1-3/16 | 12-3/4 | 12 | 4 | 1-15/16 | 1-15/16 | 10.88 | 10.92 | 10.75 | 1/2 | 1-5/16 |
| 12 | 19 | 1-1/4 | 15 | 14-3/8 | 4-1/2 | 2-3/16 | 2-3/16 | 12.88 | 12.92 | 12.75 | 1/2 | 1-9/16 |
| 14 | 21 | 1-3/8 | 16-1/4 | 15-3/4 | 5 | 2-1/4 | 3-1/8 | 14.14 | 14.18 | 14.00 | 1/2 | 1-5/8 |
| 16 | 23-1/2 | 1-7/16 | 18-1/2 | 18 | 5 | 2-1/2 | 3-7/16 | 16.16 | 16.19 | 16.00 | 1/2 | 1-3/4 |
| 18 | 25 | 1-9/16 | 21 | 19-7/8 | 5-1/2 | 2-11/16 | 3-13/16 | 18.18 | 18.20 | 18.00 | 1/2 | 1-15/16 |
| 20 | 27-1/2 | 1-11/16 | 23 | 22 | 5-11/16 | 2-7/8 | 4-1/16 | 20.20 | 20.25 | 20.00 | 1/2 | 2-1/8 |
| 24 | 32 | 1-7/8 | 27-1/4 | 26-1/8 | 6 | 3-1/4 | 4-3/8 | 24.25 | 24.25 | 24.00 | 1/2 | 2-1/2 |
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