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NHFLEX-D
Marine-grade rubber expansion joints are engineered to thrive in the corrosive, high-motion environments of offshore platforms, naval vessels, and coastal infrastructure. Constructed with chlorobutyl or bromobutyl compounds resistant to saltwater, hydrocarbons, and marine growth, these joints feature galvanized or duplex stainless steel flanges for unparalleled durability. Their multi-arch design compensates for dynamic loads from wave action, tidal currents, and vessel maneuvering, while integrated fireproofing meets SOLAS and DNV GL standards for offshore safety.
1. Saltwater Endurance: Passes 1,000-hour salt spray testing per ASTM B117 without cracking.
2. Dynamic Movement Capacity: ±50mm axial, ±25mm lateral, and ±10° angular movement ratings.
3. Anti-Fouling Protection: Optional copper-nickel alloy mesh deters barnacle attachment.
4. High-Pressure Capability: Subsea models rated for 100m depth with pressure-balanced arch profiles.
5. Quick Installation: Pre-molded flanges with drilled bolt holes align with ANSI/ASME B16.5 specifications.
· LNG Carrier Cargo Systems: Absorbs thermal contraction in cryogenic pipework.
· Offshore Firewater Systems: Withstands Jockey pump pulsations and emergency deluge pressures.
· Ballast Water Treatment: Connects UV reactors and filtration units in shipboard BWMS.
· Desalination RO Plants: Manages brine reject pulsations in high-pressure membrane arrays.
Q: What certifications apply to offshore use?
A: DNV GL Type Approval, MED Wheelmark, and ABS/API 607 fire-safe certifications.
Q: How are joints protected during dry-docking?
A: Temporary PVC covers prevent UV degradation during prolonged exposure.
Q: Can they accommodate pipewalking in subsea risers?
A: Yes, our snake-profile joints with multiple arches neutralize axial creep forces.
| MATERIAL SPECIFICATION | ||
| Part No. | Part | Standard Specification |
| 1 | Union | Malleable iron |
| 2 | Rubber (Outer) | EPDM |
| 3 | Reinforcing Fabric | Nylon Fabric |
| 4 | Rubber (lnner) | EPDM |
Note: For special material request other than standard specification, please indicate clearly on the inquiy or order list.
Marine-grade rubber expansion joints are engineered to thrive in the corrosive, high-motion environments of offshore platforms, naval vessels, and coastal infrastructure. Constructed with chlorobutyl or bromobutyl compounds resistant to saltwater, hydrocarbons, and marine growth, these joints feature galvanized or duplex stainless steel flanges for unparalleled durability. Their multi-arch design compensates for dynamic loads from wave action, tidal currents, and vessel maneuvering, while integrated fireproofing meets SOLAS and DNV GL standards for offshore safety.
1. Saltwater Endurance: Passes 1,000-hour salt spray testing per ASTM B117 without cracking.
2. Dynamic Movement Capacity: ±50mm axial, ±25mm lateral, and ±10° angular movement ratings.
3. Anti-Fouling Protection: Optional copper-nickel alloy mesh deters barnacle attachment.
4. High-Pressure Capability: Subsea models rated for 100m depth with pressure-balanced arch profiles.
5. Quick Installation: Pre-molded flanges with drilled bolt holes align with ANSI/ASME B16.5 specifications.
· LNG Carrier Cargo Systems: Absorbs thermal contraction in cryogenic pipework.
· Offshore Firewater Systems: Withstands Jockey pump pulsations and emergency deluge pressures.
· Ballast Water Treatment: Connects UV reactors and filtration units in shipboard BWMS.
· Desalination RO Plants: Manages brine reject pulsations in high-pressure membrane arrays.
Q: What certifications apply to offshore use?
A: DNV GL Type Approval, MED Wheelmark, and ABS/API 607 fire-safe certifications.
Q: How are joints protected during dry-docking?
A: Temporary PVC covers prevent UV degradation during prolonged exposure.
Q: Can they accommodate pipewalking in subsea risers?
A: Yes, our snake-profile joints with multiple arches neutralize axial creep forces.
| MATERIAL SPECIFICATION | ||
| Part No. | Part | Standard Specification |
| 1 | Union | Malleable iron |
| 2 | Rubber (Outer) | EPDM |
| 3 | Reinforcing Fabric | Nylon Fabric |
| 4 | Rubber (lnner) | EPDM |
Note: For special material request other than standard specification, please indicate clearly on the inquiy or order list.
