Threaded Flange
At Parmar TechnoForge Pvt. Ltd., we manufacture and supply premium-quality Threaded Flanges that combine precision engineering with high mechanical strength and corrosion resistance.
Also known as Screwed Flanges, these components are designed for use with pipes that have external threads — making them ideal for systems where welding is not feasible. Threaded flanges are well-suited for high-pressure, small-diameter piping systems, or for flammable and explosive environments where welding could pose safety risks.
Our Threaded Flanges are produced according to international standards such as ASME B16.5, ASME B16.47, MSS-SP-44, and API 605, ensuring dimensional accuracy, reliability, and long service life.
Key Features
- No welding required – easy assembly and disassembly
- Ideal for high-pressure applications and non-welded connections
- Designed for small diameter threaded pipes
- Prevents heat-affected zone issues common in welded joints
- Available in RF, FF, and RTJ facing types
- Manufactured with tight tolerances for secure thread engagement
- Thread Types: NPT / BSP / BSPT / ISO / DIN
| Types | WITH RAISED FACE / FLAT FACE / RING TYPE JOINT |
|---|---|
| Size | 1/2" NB TO 24" NB |
| Class | 150#, 300#, 400#, 600#, 900#, 1500# & 2500# |
| Stainless Steel | ASTM A182 F304 / 304L / 316 / 316L / 321 / Etc. |
| Carbon Steel | ASTM A105 / A105N / A350 LF2 / Etc. |
| Duplex / Super Duplex | ASTM A182 F51 / F53 / F55 / UNS S31803 / S32750 / S32760 |
| Alloy Steel | ASTM A182 F5 / F9 / F11 / F22 / Etc. |
| Others Non-Ferrous / Exotic Grade | Monel, Inconel, Hastelloy, Copper Nickel (CuNi10Fe1.6Mn), 70/30 Copper Nickel (CuNi30Fe), DOW Copper, Aluminium, Etc. |
| Standards & Specifications |
ASME-B16.5, ASME-B16.47, API-605, MSS-SP-44, DIN / BS, NACE-MR0175 / MR0103, PED / IBR Certification (where applicable) |
| Customization | All products can be customized as per client requirements. |
weight of flanges
| NPS | Class 150 THRF | Class 300 THRF | Class 600 THRF |
|---|---|---|---|
| 1/2 | 0.5 | 0.9 | 0.9 |
| 3/4 | 0.9 | 1.4 | 1.4 |
| 1 | 0.9 | 1.4 | 1.8 |
| 1½ | 1.4 | 2.3 | 3.2 |
| 2 | 3.6 | 4.5 | 5.9 |
| 3 | 4.1 | 6.3 | 7.2 |
| 4 | 5.9 | 10.8 | 16.7 |
| 5 | 6.8 | 13.9 | 28.4 |
| 6 | 8.6 | 17.6 | 36 |
| 8 | 13.5 | 26.1 | 51.8 |
| 10 | 19.4 | 36.5 | 79.7 |
| 12 | 96.8 | - | - |
| 14 | 28.8 | 51.8 | 116.6 |
| 16 | 40.5 | 74.3 | 164.7 |
| 18 | 44.1 | 99 | 214.2 |
| 20 | 58.5 | 126 | 275.4 |
| 22 | 83.3 | 166.5 | - |
| 24 | 99 | 220.5 | 394.2 |
Dimensions of Flanges
| NPS | Class 900 THRF | Class 1500 THRF | Class 2500 THRF |
|---|---|---|---|
| 1/2 | 2.7 | 2.7 | 3.2 |
| 3/4 | 2.7 | 2.7 | 4.1 |
| 1 | 3.4 | 3.6 | 5.4 |
| 1¼ | 4.5 | 4.5 | 8.1 |
| 1½ | 6.3 | 6.3 | 11.3 |
| 2 | 9.9 | 11.3 | 17.1 |
| 2½ | 13.9 | 16.2 | 21.6 |
| 3 | 24.8 | 31.5 | 37.4 |
| 4 | 16.2 | 32.9 | 57.2 |
| 5 | 23.9 | 37.4 | 59.4 |
| 6 | 49.5 | 74.3 | 145.4 |
| 8 | 77.4 | 117 | 218.3 |
| 10 | 110.3 | 196.2 | 416.3 |
| 12 | 146.7 | 300.2 | 585 |
| 14 | 180 | 423 | - |
| 16 | 206.6 | 291.2 | 562.5 |
| 18 | 356.4 | 731.3 | - |
| 20 | 666 | 922.5 | - |
| 24 | 1271.5 | - | - |