Marine Watertight & Weathertight Doors

Hongruntong supplies marine watertight doors, weathertight doors on ships, and watertight doors & hatches—SOLAS-certified, corrosion-resistant for cargo ships, cruise liners.

Hongruntong specializes in maritime safety door solutions, covering marine watertight doors, weathertight doors on ships, and integrated watertight doors and hatches. Our products are engineered to meet global maritime standards (SOLAS, IMO, DNV) and solve core pain points of ship operations: seawater corrosion resistance, extreme weather resilience, and watertight/weathertight integrity—critical for protecting crew, cargo, and ship structures.

As a professional marine equipment manufacturer with decades of experience in shipbuilding components, Hongruntong Marine produces reliable weathertight doors and watertight door combinations and certified watertight doors and hatches systems for various vessel types including commercial ships, naval vessels, and offshore platforms. Our expertise encompasses robust marine watertight doors designed to prevent water ingress between compartments, specialized weathertight doors on ships that protect against sea spray and weather elements, and comprehensive watertight and weathertight doors on ships packages that ensure complete vessel integrity and safety. All our products are engineered to withstand harsh marine environments while providing reliable operation and long-term durability.

Features & Benefits

• SOLAS Certification: All marine watertight doors meet International Maritime Organization standards

• Weather Protection: Weathertight doors on ships prevent water penetration in heavy seas

• Complete Systems: Integrated watertight doors and hatches for full compartmentalization

• Dual Protection: Combined weathertight doors and watertight door solutions

• Vessel Safety: Comprehensive watertight and weathertight doors on ships packages

• Corrosion Resistance: Marine-grade materials with advanced protective coatings

Applications

• Bulkhead access in cargo ships, oil tankers, and naval vessels

• Offshore platforms, FPSOs, and jack-up rigs

• Engine rooms, accommodation spaces, watertight compartments

• Access points on weathertight decks or exposed superstructures

• Coastal defense and flood protection systems

Technical Data

Specifications

Detailed Photos

Why Choose Hongruntong Marine?

• Certification Expertise: We have in-house teams specializing in SOLAS/IMO compliance – ensure products pass third-party testing (CCS/ABS) on the first attempt, saving clients time on certification.
• Fast Customization: Standard products ship within 7–10 days; custom doors/hatches take 15–20 days (faster than industry average of 30 days) – supports urgent ship repair or new-building projects.
• Quality Control: All products undergo 48-hour pressure testing (watertight doors) and wind/rain simulation (weathertight doors) – 100% leak-free before delivery.
• On-Site Support: We send engineers to shipyards for installation guidance (e.g., aligning door frames with ship bulkheads); offer 24/7 technical support for emergency repairs (e.g., gasket replacement at sea).
• Cost-Effectiveness: Bulk orders (10+ units) get 10–15% discounts; we provide free spare gaskets with each order – reduces long-term maintenance costs for shipowners.

Quality Assurance Process

1. Material Inspection: Test 316L SS for chemical composition (Cr≥16%, Ni≥10%) and FRP for tensile strength (≥150MPa); EPDM gaskets are checked for hardness (60±5 Shore A) and compression set (≤20% after 70℃×22h).

2. Component Manufacturing: Door panels are laser-cut (precision ±0.5mm); hinges are welded with full penetration (no air bubbles); gaskets are vulcanized to ensure adhesion to door frames.
3. Performance Testing:

• Watertight doors: Pressurized to 1.2× rated pressure for 48 hours – no water leakage.
• Weathertight doors: Wind tunnel testing (120km/h) and rain simulation (IPX9K) – no water ingress.

4. Certification Audit: Third-party inspectors (CCS/ABS) verify compliance with SOLAS/IMO standards – issue certification only if all tests pass.
5. Final Inspection: Check door hardware (hinges, latches) for smooth operation; verify size and opening mode match client orders – pack with anti-rust film to prevent damage during shipping.

FAQ

Q: What certifications do your marine watertight doors carry?
A: Our marine watertight doors are SOLAS certified and comply with IMO regulations, along with major classification society approvals including DNV-GL, ABS, and Lloyd's Register.

Q: What's the difference between weathertight and watertight doors on ships?
A: Weathertight doors on ships are designed to prevent water penetration under weather conditions, while watertight doors provide complete water barrier protection between compartments, with both types being essential for vessel safety.

Q: Can you provide complete watertight doors and hatches systems?
A: Yes, we supply complete watertight doors and hatches systems that are fully integrated and tested to ensure proper operation and compatibility throughout the vessel.

Q: Are your watertight and weathertight doors on ships customizable?
A: We offer customized watertight and weathertight doors on ships solutions with specific sizes, materials, and operational mechanisms to meet unique vessel design requirements.

Q: What maintenance do your weathertight doors and watertight door systems require?
A: Our weathertight doors and watertight door systems are designed for minimal maintenance, with recommended periodic inspections, seal replacements, and operational testing according to manufacturer guidelines and classification society requirements.