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Add: Donggao Village, Bagong Town, Zezhou County, Jincheng City, Shanxi, China
Phone: +86-15135866651
E-mail: dcipipe@hotmail.com

Dismantling Joint

1. Material and Manufacturing
Core Material Composition:
Ductile Iron Body: EN-GJS-500-7/600-3
Stainless Steel Components: SS304/316 bolts, nuts, and adjustment threads
Advanced Sealing System: Multi-layer EPDM/NBR reinforced gaskets
Corrosion Protection: Fusion-bonded epoxy coating (≥250μm) per AWWA C116

Precision Manufacturing:
Investment casting for dimensional precision
CNC machining of flange faces and threads
Automated torque-controlled assembly
100% pressure and dimensional testing


2. Performance Characteristics
Mechanical Performance:
Pressure rating: PN10/16/25 (150–365 psi)
Temperature range: -20°C to 120°C
Axial compensation: ±50mm to ±100mm
Angular deflection: Up to 4°
Burst pressure: ≥4× rated working pressure

Sealing Performance:
Triple-seal configuration:

  • Pressure-activated lip seal

  • Static flange gasket

  • Axial compression gasket
    Zero leakage at 1.5× rated pressure per EN 1092-2
    Full sealing performance across adjustment range

Installation Performance:
Quick connection/disconnection in 5–10 minutes
Visual position and alignment indicators
Bolt retention and guide lug systems for precise assembly


3. Utility and Applications
Primary Application Domains:
Pump and valve maintenance connections
Pipeline expansion and contraction compensation
Emergency system repairs and equipment replacement

Operational Advantages:
70% reduction in maintenance time
Compensates for installation inaccuracies
Compact design minimizes space requirements
Vibration absorption enhances equipment protection

Economic Benefits:
80% faster maintenance operations
Reduced labor (2-person operation)
Lower lifecycle cost (up to 50% savings over 20 years)

Technical Superiority:
Axial and angular compensation eliminates pipe cutting
Reusable over 500 cycles
Maintains original pipeline integrity

Design Features:
Double-flange spool design with locking adjustment nuts
Anti-blowout safety construction
Fire-safe metallic secondary seal option


Conclusion:
Ductile Iron Dismantling Joints provide a precise, flexible, and maintenance-friendly connection solution for modern piping systems. Their robust structure, multi-seal design, and adjustable configuration ensure easy installation, reliable sealing, and long-term service performance—making them ideal for pump stations, valve chambers, and systems requiring frequent maintenance or alignment compensation.


Jincheng Steel Holding Group Co.,Ltd as raw material, and has 6 sets intermediate frequency furnaces, 1 set 70m-long continuous annealing furnace and 2 sets bench annealing furnaces and 4 sets finishing processing lines.

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Add : Donggao Village, Bagong Town, Zezhou County, Jincheng City, Shanxi, China
Phone : +86-15135866651
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