Reducer Submarine Hose
Hongruntong Marine (factory-direct) supplies high-performance Submarine Hose, Reducer Submarine Hose, and Single Carcass Reducer Submarine Hose for offshore oil & gas fluid transfer.

Hongruntong Marine is a professional manufacturer of high-performance reducer submarine hose systems, focusing on solving subsea pipeline diameter connection challenges. Our product portfolio covers the specialized single carcass submarine reducer hose, durable submarine reducer hose, and versatile submarine hose configurations. These products integrate advanced marine-grade materials and precision engineering—especially the single carcass submarine reducer hose, which balances lightweight design and structural strength—to ensure stable operation in harsh subsea environments such as high pressure, corrosion, and temperature fluctuations.
Technical Features & Benefits
Smooth Fluid Transition
The reducer submarine hose adopts a precision-machined conical transition structure, enabling seamless flow between pipelines of different diameters. It minimizes pressure loss and flow turbulence, ensuring efficient fluid transmission in subsea operations.
Single Carcass Structural Advantage
Our single carcass submarine reducer hose features an optimized single-layer reinforcement design (integrated high-tensile steel wires and aramid fibers). It reduces overall weight by 30% compared to traditional multi-carcass models while maintaining excellent pressure resistance, facilitating subsea installation and reducing deployment costs.
Superior Deepwater Adaptability
All submarine hose products are engineered to withstand extreme subsea conditions: they resist high external pressure, adapt to temperature variations, and maintain structural integrity in strong ocean currents—suitable for long-term submerged service.
Enhanced Corrosion & Fouling Resistance
The submarine reducer hose is coated with marine-grade anti-corrosion rubber and anti-fouling additives. It effectively resists seawater erosion, marine organism attachment, and chemical corrosion from oil & gas fluids, extending service life by 20% compared to standard products.
Applications
Technical Specifications
Detailed Photos




Manufacturing Excellence
Precision Engineering & Fabrication
Advanced CNC machining and rubber vulcanization processes ensure accurate diameter transitions and consistent dimensional tolerance for every reducer submarine hose.
Rigorous Quality Assurance
Each single carcass submarine reducer hose undergoes 100% pressure testing, leak detection, and fatigue resistance testing to meet strict performance standards.
Customized Solution Capability
We provide tailored submarine reducer hose configurations, including special reduction ratios, pressure ratings, and material modifications, to match specific project requirements.
Compliance with Global Standards
All submarine hose products adhere to international subsea equipment norms, ensuring compatibility with global offshore engineering systems.
Service Commitment
Performance Advantages
Stable & Efficient Fluid Transmission
The reducer submarine hose maintains consistent flow velocity and pressure stability, avoiding operational risks caused by flow turbulence in diameter transition sections.
Easy & Cost-Effective Installation
The lightweight single carcass submarine reducer hose reduces the demand for heavy subsea installation equipment, cutting deployment time and labor costs by 25%.
Long-Term Operational Durability
With anti-corrosion, anti-fouling, and fatigue-resistant design, the submarine reducer hose ensures reliable service for 10+ years in harsh marine environments, lowering lifecycle costs.
Frequently Asked Questions (FAQ)
Q: What are the core application scenarios of reducer submarine hose?
A: Reducer submarine hose is mainly used in subsea pipeline systems that require diameter transition, such as offshore oil & gas pipeline connections, subsea wellhead fluid transfer, and emergency pipeline repair.
Q: What advantages does single carcass submarine reducer hose have over multi-carcass models?
A: The single carcass structure is lighter and more flexible, making subsea installation easier and more cost-effective. It also has excellent pressure resistance, which can meet the requirements of most deepwater operations.
Q: Can you customize the size and pressure rating of submarine reducer hose?
A: Yes. We offer full customization services, including size range (8"–24"), reduction ratios, working pressure (500–1000 PSI), and depth rating, to meet specific project needs.
Q: Do your submarine hose products have international certifications?
A: All our reducer submarine hose and single carcass submarine reducer hose comply with API 17K, ISO 13628-11, and DNV GL certifications, ensuring quality and safety for global offshore projects.