Keyhole Fender

 

As a global leader in maritime protection solutions, Hongruntong’s advanced rubber keyhole fenders are engineered to redefine docking safety. Developed through 15+ years of hydrodynamic research in collaboration with Shanghai Maritime University, our fenders exceed PIANC 2002 and OCIMF MEG4 standards, ensuring reliability in the world’s most challenging marine environments – from Arctic offshore platforms to tropical megaports.

 

 

Engineered Excellence: Technical Superiority

 

1. Proprietary Rubber Compound

  • Durability: 55-65 Shore A hardness rubber with 18% carbon black reinforcement

  • Environmental Resistance:

    • UV stability tested per ASTM G154 (5,000+ hours xenon-arc exposure)

    • Chemical resistance to oils, fuels, and saline solutions (pH 2-12)

  • Operational Range: -40°C to +90°C performance certification

2. Structural Innovation

  • Energy Absorption: 42% higher than standard D-shaped fenders (DNV GL verified)

  • Modular Design: 300-3,000mm length configurations with flanged bolt slots

  • Maintenance: Embedded RFID tags for lifecycle monitoring (IoT compatible)

 

 

Value Proposition: Beyond Basic Protection

 

Operational Benefits

  • Cost Efficiency: 22% reduced replacement frequency vs. EPDM alternatives

  • Risk Mitigation: 0.15 friction coefficient minimizes vessel abrasion

  • Sustainability: 92% recycled rubber content (GRS-certified)

 

 

Industry-Specific Solutions

 

Sector Customization Certification
Commercial Ports Anti-twist steel cable cores PIANC 2002 Guidelines
Offshore Wind Subsea-grade anodes for cathodic protection DNV-OS-J201 (Offshore Standard)
Naval Bases Radar-absorbent rubber compounds MIL-DTL-24607C (Military Spec)

 

 

Global Implementation & Support

 

Case Study Highlight

  • Project: Singapore Tuas Mega Port Phase 3

  • Solution: 1,200+ keyhole fenders with embedded strain sensors

  • Results:

    • 31% reduction in collision damage claims (2020-2023)

    • 17-month ROI through reduced maintenance costs

Service Ecosystem

  • Digital Tools: 3D berth simulation software (API integration available)

  • Supply Chain: 48-hour emergency replacement guarantee (30+ global warehouses)

  • Compliance: Full documentation packages including:

    • Material Declarations (IMDS)

    • FEM Analysis Reports

    • CE/UKCA Declaration of Conformity

 

 

Why Global Operators Trust Hongruntong

 

R&D Investment: 8.2% annual revenue reinvested in material science
Transparency: Live webcam access to Qingdao testing facility
Legacy: 630+ megaton-class vessels protected since 2009

 

 

Dimensions

 

 

Model A
[mm]
B
[mm]
C
[mm]
D
[mm]
G
[mm]
E
[mm]
Lmax
[mm]

HM-KH200

200

200

35

28

90

130

3000

HM-KH250

250

250

50

33

100

150

3000

HM-KH300

300

300

60

33

115

180

3000

HM-KH350

350

350

70

33

125

210

3000

 

 

Details Photos

 

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Keyhole Fender | Heavy-Duty Marine-Grade Protection for Boats, Docks & Yachts | Durable Rubber Construction