Weld Neck Threaded Flange
- No Welding Required: Threaded connection, no welding equipment needed, convenient installation
- Higher Strength: Necked design with higher strength than ordinary threaded flanges
- Flexible Disassembly: Easy to disassemble and maintain with strong adaptability
- Good Sealing Performance: Neck design improves sealing performance
- Wide Application: Suitable for special applications where welding is not recommended
- Simple Maintenance: No special maintenance required, simple operation
Weld Neck Threaded Flange is a flange product combining the features of necked flanges and threaded flanges, offering both the strength and stiffness of necked flanges and the welding-free advantage of threaded flanges. The product connects to the pipe through threads but adds a neck structure to improve the overall strength and sealing performance of the flange. The necked threaded flange is suitable for applications requiring frequent disassembly, maintenance or where welding is not recommended, widely used in pipeline systems in industries such as fire protection systems, HVAC, gas pipelines, etc. The flange features convenient installation, flexible disassembly, and no need for welding equipment, making it an ideal choice for special applications. The product is strictly manufactured according to international and national standards such as ASME B16.5 and GB/T 9113 to ensure product quality and safety performance.
Technical Standards
| Item | Technical Standard |
|---|---|
| Material | A105, A182 F304, A182 F316, A350 LF2 |
| Pressure Rating | Class150-Class600 |
| Size Range | 1/2" to 12" (DN15 to DN300) |
| Temperature Range | -29℃ to +425℃ |
| Connection Type | Threaded Connection |
| Thread Standard | NPT, BSP, GB/T 7306 |
| Face Type | Raised Face (RF), Flat Face (FF), Male/Female (M/F) |
| Manufacturing Standard | ASME B16.5, GB/T 9113 |
| Inspection Standard | ASME B16.47, GB/T 9124 |
Basic Models
| Model | Type | Features |
|---|---|---|
| WNTF-150 | 150Lb Weld Neck Threaded Flange | Low pressure application, cost-effective |
| WNTF-300 | 300Lb Weld Neck Threaded Flange | Medium pressure application, stable performance |
| WNTF-400 | 400Lb Weld Neck Threaded Flange | High pressure application, high strength |
| WNTF-600 | 600Lb Weld Neck Threaded Flange | Ultra-high pressure application, safe and reliable |
Main Components Material Table
| No. | Part Name | Material |
|---|---|---|
| 1 | Flange Body | A105, A182 F304, A182 F316 |
| 2 | Sealing Face | Same as flange body or overlay alloy |
| 3 | Threaded Section | Same as flange body |
| 4 | Bolt Holes | Machined as part of flange body |
| 5 | Surface Treatment | Anti-rust paint, galvanized or passivated |
| 6 | Identification Marking | Laser marking or cast lettering |
No drawing available.
