YanShan Shunlinfeng Pipeline Manufacturing Co., Ltd.
Product Description
Standard
Product introduction
High-Pressure Socket Weld Pipe Couplings – Technical Specification
1. Product Definition
A high-pressure socket weld coupling is a forged pipe connector designed to:
- Join two pipes in a permanent, leak-proof straight-run configuration
- Withstand operating pressures up to 15,000 psi (Class 6000+)
- Provide superior mechanical strength through full-penetration welds
2. Design Features
✔ Deep Socket Depth: 1.5× pipe wall thickness for optimal weld penetration
✔ Internal Bore Alignment: Machined to ±0.1mm tolerance for smooth flow transition
✔ Reinforced Hub: 20% thicker wall than standard couplings
✔ Weld Prep Bevel: 37.5° angle with 1.6mm landing
3. Performance Advantages
- Zero-Leak Guarantee: Eliminates gasket failure points
- Vibration Resistance: 10× better fatigue life than threaded couplings
- Flow Efficiency: Near-zero pressure loss (Cv > 0.99)
- Compact Design: 30% shorter than flanged connections
4. Installation Protocol
1. Fit-Up:
- Maintain 1.6mm expansion gap between pipe and socket shoulder
- Align within 0.5° angular tolerance
2. Welding:
- Root Pass: GTAW with ER70S-6 filler
- Fill/Cap: SMAW with E7018 electrodes
- Interpass Temp Control: 150-200°C for CS
3. Post-Weld:
- PWHT: Mandatory for P-No. 3+ materials
- Inspection: 100% PT + 10% RT (Class 6000+)
5. Industry Applications
- Power Generation: Main steam lines (>1000°F/538°C)
- Oil & Gas: Subsea manifolds (10,000psi+)
- Chemical: High-pressure reactor feeds
- Aerospace: Hydraulic test stands
6. Standards Compliance
- ASME B16.11: Dimensional requirements
- ASTM A961: Forging standards
- NACE MR0175: Sour service compliance
- PED 2014/68/EU: CE marking
7. Quality Assurance
- Material Certs: 3.1 Mill Test Reports
- NDE: UT + PMI (Positive Material Identification)
- Hydro Test: 1.5× MAWP for 30 minutes
- Surface Finish: 32μin Ra (electropolished optional)
Why Choose Socket Weld Couplings?
✔ Safety Critical: Preferred for lethal service per ASME B31.3
✔ Longevity: 50+ year service life in power plants
✔ Space Savings: Eliminates flange bolt circles
For ultra-high pressure (>10,000 psi): Specify autofrettaged couplings with work-hardened bores.
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Mr.Jasper
Company Address:Yanshan County,Cangzhou City,Hebei Province,China
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