Offshore oil hose refers to heavy-duty flexible hoses dedicated to crude oil, fuel and hydrocarbon transmission in offshore marine environments, divided into two core categories: API 17K bonded flexible hoses for subsea/platform permanent production, and OCIMF/API 15S floating loading hoses for ship-to-shore and ship-to-ship oil transfer. It replaces rigid steel pipelines to adapt wave swing, seabed displacement and high-corrosion saltwater conditions, widely used for FPSO, fixed platforms, subsea production systems and tanker mooring oil delivery.

### 1. Multi-Layer Composite Construction Standard offshore oil hose adopts full vulcanized integrated layered design with marine anti-corrosion materials: 1. Inner liner: HNBR, PVDF or UPE with excellent oil resistance, resisting erosion of crude oil, H₂S and CO₂ sour media, ultra-low permeability to avoid tube swelling; conductive liner dissipates static electricity to prevent ignition risks. 2. Reinforcement layers: Multiple layers of high-strength copper-plated spiral steel wire + polyester fiber braids, bearing working pressure up to 7500 psi for deepwater production models; suction-type floating hoses add steel wire helix to resist vacuum collapse. 3. Outer protective cover: Flame-retardant chloroprene rubber blended with anti-ozone, anti-UV and seawater aging additives; heavy-duty working types can be equipped with stainless steel interlock armor to avoid friction scratch damage on gangways and seabed. 4. End fittings: Duplex anti-sulfur steel flanges integrally vulcanized with hose body, matched with integrated bend stiffeners to prevent sharp bending kinks at both ends.

### 2. Core Performance Advantages - Outstanding dynamic fatigue resistance: Withstand decades of reciprocating swing, torsion and pressure pulsation caused by ocean waves without interlayer delamination, cracking or medium leakage, design service life over 20 years. - Wide temperature adaptability: Stable performance from -30℃ to +105℃, applicable to frigid polar offshore areas and high-temperature production decks. - Superior corrosion resistance: Far better anti-saltwater, anti-sulfur performance than carbon steel pipes, cutting subsea pipeline maintenance frequency and excavation costs. - Flexible layout: Easy to install in narrow rack gaps, seabed mud buried zones and gangway cross-platform passages, lowering offshore construction mobilization costs.

### 3. Main Application Classifications & Scenarios 1. API 17K Production Oil Hose (Jumper/Gangway/Buried Pipe) For permanent offshore oil & gas production: subsea jumpers between manifolds and subsea trees, gangway crossover hoses between FPSO and fixed platforms, buried seabed flowlines for crude export and water injection circulation. 2. OCIMF Floating Loading Oil Hose For temporary mooring transfer: ship-to-ship (STS) oil delivery, tanker-platform crude loading/unloading, floating buoy oil export lines, single/double carcass structure with built-in leak detection system complying with GMPHOM 2009 standard. 3. Auxiliary Offshore Oil Hose Small-caliber fuel supply hoses for drilling rigs, hydraulic oil transfer hoses and chemical injection pipelines on production decks.

### 4. Strict Procurement & Certification Standards - Production hoses for deepwater projects must hold complete API Spec 17K official certification monogram; floating loading hoses need OCIMF, DNV or ABS classification society certification. - Key factory tests: hydraulic burst test, long-term pulse fatigue test, flame retardant test, seawater aging test and sour medium corrosion resistance test. - Ordinary industrial oil hoses without marine certification are prohibited for offshore operations, which may cause oil spillage, marine pollution and massive production shutdown losses.

In summary, offshore oil hose is the core fluid transportation artery of global marine oil and gas industry. Deploying certified high-performance offshore oil hose ensures safe, long-cycle crude transmission under extreme marine dynamic and corrosive environments, and significantly reduces whole-lifecycle offshore operation and maintenance costs.