英语
德语
阿拉伯语
Technical Features and Specifications
Butt weld fittings are designed to provide a smooth, unobstructed flow path and a 100% efficient weld joint.
| Feature | Detail |
|---|---|
| Standards | ASME B16.9 (Dimensions), ASTM A234 (Materials). |
| Common Shapes | 90°/45° Elbows, Equal/Reducing Tees, Caps. |
| Materials | WPB, WP11, WP22, WP91, WP316L, WP51. |
The "Long Radius" (LR) elbow is the most common forged type, providing a gradual turn to minimize pressure drop. The forging process allows for "Heavy Wall" (XXS) schedules that are difficult to achieve through traditional pipe-bending methods, ensuring the fitting can handle the same internal pressure as the heavy-duty forged valves it connects to.
Corporate Culture and Development Philosophy
-
Development Conceptscientific and technological innovation as the driving force. -
Quality PolicyPeople, integrity, truth-seeking, innovation -
Core ValueCommon development to achieve symbiosis and win-win.
Buying Tips for Large-Scale Piping
- Schedule Matching: The fitting's wall thickness (schedule) must perfectly match the pipe it is being welded to (e.g., Sch 160) to avoid "mismatch" at the root of the weld.
- Bevel Inspection: Always check the weld bevel for nicks or rust before welding; forged fittings are often provided with a protective epoxy coating to prevent this.
- Heat Treatment: For P91 or high-alloy fittings, verify that the post-forging heat treatment was performed correctly to ensure the creep-strength properties are intact.
Advantages of Forged Butt-Weld Fittings
| Advantage | Operational Benefit |
|---|---|
| Strength | Uniform grain flow provides superior resistance to internal pressure. |
| Internal Smoothness | Forged and machined internals prevent turbulence and erosion. |
| Weld Quality | Dense forged steel provides an excellent base for critical X-ray quality welds. |
Primary Applications
| Industry | Usage Context |
|---|---|
| Power Generation | Main steam and boiler feedwater piping. |
| Oil & Gas | High-pressure transmission pipelines and manifold systems. |
| Nuclear Power | Safety-critical cooling water and steam systems. |
- Q: What is the benefit of "Long Radius" over "Short Radius"?
- A: Long radius elbows create less friction and pressure drop, making the system more efficient and reducing the wear on the internal walls of the fitting.
