Threaded Flanges
What are Threaded Flanges?
Threaded Flanges are pipe connection components that feature a tapered internal thread, allowing pipes to be screwed directly into the flange without the need for welding. These flanges are ideal for low-pressure, non-critical applications or in environments where welding is hazardous or impractical. The design makes them convenient for assembly and disassembly, especially in maintenance-heavy systems or explosive zones.
Asiad Steel Industries is a prominent manufacturer and supplier of premium-quality Threaded Flanges in stainless steel, carbon steel, and special alloys for various global industries.
Key Features
- No Welding Required – Perfect for applications where welding is unsafe or restricted.
- Quick Installation – Pipes can be connected using threads, saving time and labor.
- Suitable for High-Temperature Environments – Often used in steam or explosive systems.
- Wide Thread Options – NPT, BSP, BSPT, and ISO Metric threads available.
- International Standard Compliance – ASME, DIN, BS, EN approved dimensions and grades.
Types of Threaded Flanges
- Raised Face Threaded Flange
- RTJ Threaded Flange
- Threaded Flange with Hub
- Flat Face Threaded Flange
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Description |
|---|---|
| Size Range | ½” to 24” (DN15 – DN600) |
| Pressure Class | ANSI 150#, 300#, 600# |
| Thread Types | NPT, BSP, BSPT, ISO |
| Facing Types | RF, FF, RTJ |
| Standards | ASME B16.5, EN 1092-1, BS 4504 |
| Materials | CS, SS 304/316, Duplex, Alloy Steel |
| Manufacturing | Forged, Heat Treated, Machined |
| Property | Value |
|---|---|
| Tensile Strength | 450 – 700 MPa |
| Yield Strength | 240 – 450 MPa |
| Hardness | 120 – 250 HB |
| Elongation | 20% – 30% |
| Temperature Range | -29°C to +550°C |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 – 0.25 |
| Manganese (Mn) | 0.60 – 1.65 |
| Silicon (Si) | 0.15 – 0.60 |
| Chromium (Cr) | 17.0 – 20.0 (SS) |
| Nickel (Ni) | 8.0 – 10.5 (SS) |
| Molybdenum (Mo) | 2.0 – 3.0 (in 316) |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.030 |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A105 (CS), A182 F304 / F316 |
| EN | 1.4301, 1.4401, 1.4571 |
| DIN | C22.8, X5CrNi18-10, X2CrNiMo17-12-2 |
| JIS | SUS304, SUS316 |
| Size (inches) | Pressure Class | Approx Weight (kg) |
|---|---|---|
| 1” | 150# | 1.20 kg |
| 2” | 300# | 3.60 kg |
| 3” | 600# | 7.90 kg |
| 4” | 150# | 9.20 kg |
| 6” | 300# | 16.40 kg |
Applications of Threaded Flanges
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
Where are threaded flanges commonly used?
They are typically used in low-pressure systems, explosive environments, and temporary piping setups where welding is restricted.
Are threaded flanges suitable for high-pressure pipelines?
Not recommended. They are best for Class 150 and Class 300 applications. For higher pressure, use weld neck or socket weld flanges.
What thread types are supported?
We offer NPT, BSP, BSPT, and ISO metric threads based on project requirements and regional standards.
Do you offer flanges with special coatings?
Yes. We provide galvanized, epoxy-coated, PTFE-lined, and other corrosion-resistant finishes.
