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A Threaded Flange, also known as a screwed flange, is a type of flange that connects to pipes using a male threaded pipe without the need for welding. This makes it ideal for applications where welding is not feasible or when working with flammable, explosive, or hazardous environments. The internal threads allow for a tight and secure mechanical connection.
Typically manufactured from carbon steel, stainless steel, and alloy steels, threaded flanges offer excellent durability and corrosion resistance. They are widely used in low-pressure, non-cyclic applications such as plumbing, fire protection systems, oil & gas, and chemical processing.
Available in multiple pressure ratings like Class 150, 300, and 600, threaded flanges come in a variety of thread standards such as NPT (National Pipe Thread) and BSP (British Standard Pipe). Their easy installation, reusability, and weld-free design make them a preferred choice for maintenance and temporary systems requiring quick connections.
| Specification | Details |
|---|---|
| Product | Threaded Flanges (Screwed Flanges) |
| Size Range | 1/2" to 4" (DN15 to DN100) – Custom sizes available |
| Pressure Ratings | Class 150, 300, 600 (As per ASME B16.5) |
| Thread Types | NPT (National Pipe Thread), BSP (British Standard Pipe) |
| Face Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) – on request |
| Standards | ASME B16.5, ASTM A105, ASTM A182, MSS-SP-44, ISO 9001, EN 1092-1 (on request) |
| Material Grades |
Carbon Steel: ASTM A105, A350 LF2 Stainless Steel: 304, 304L, 316, 316L Alloy Steel: ASTM A182 F1, F11, F22 Duplex Steel: UNS S31803, S32205 Nickel Alloys: Inconel 600/625, Monel 400, Hastelloy C276 |
| Manufacturing Process | Forged, Machined, Heat Treated (as required) |
| Ends | Threaded Bore (No welding required) |
| Surface Finish | Black Painted, Pickled, Sand Blasted, Polished, Anti-Rust Coated |
| Testing & Certification | Hydrostatic Test, NDT (UT, RT, MT), PMI, Hardness Test, TPI Inspection, Mill Test Certificates (EN 10204 3.1 / 3.2) |
| Applications | Oil & Gas, Chemical Processing, Petrochemical, Fire Protection, Plumbing, Marine, Water Systems |
| Special Features | No Welding Required, Easy Installation, Ideal for Flammable Zones, Reusable, Corrosion Resistant, Suitable for Low to Medium Pressure |
| Threaded Flange Design Features |
Quick Installation: Allows easy assembly without welding. Leak-Resistant Seal: Precision threads ensure tight, leak-proof connections. Maintenance Friendly: Can be removed and reused without damaging the pipe or flange. Ideal for Hazardous Environments: Suitable where welding is dangerous or restricted. Standards Compliant: Conforms to ASME, ASTM, ISO, and MSS-SP standards. |
Our Threaded Flanges are ideal for low-pressure, non-welded piping systems. Designed for easy installation and maintenance, they offer leak-resistant threads, corrosion resistance, and are suitable for applications where welding is not feasible.
Threaded flanges are perfect for applications where welding is not practical or allowed, such as in flammable environments or maintenance-heavy systems.
Precision tapered threads like NPT or BSP ensure a secure and leak-resistant connection, especially in low to medium-pressure applications.
Available in materials like stainless steel, nickel alloys, and carbon steel with coatings, offering long-term resistance in corrosive environments.
Produced according to ASME B16.5, ANSI, and EN 1092-1 standards, ensuring dimensional precision and global interchangeability.
Threaded connections allow for fast and easy assembly or disassembly, ideal for systems requiring frequent maintenance or temporary setups.
Used across oil & gas, water systems, chemical processing, HVAC, and fire protection lines, especially where low-pressure and vibration-resistant joints are needed.