Gangway hose refers to dedicated dynamic flexible crossover hoses deployed on gangway walkways connecting offshore fixed platforms, FPSO, FSRU and floating production modules, which are mainly manufactured complying with API Spec 17K bonded flexible pipe standards. As the key fluid transit pipeline across gangway gaps, gangway hose conveys crude oil, natural gas, glycol antifreeze, injection water, chemical reagents and hydraulic control fluid. It can absorb relative displacement, wave swing and continuous pressure pulsation between floating facilities, solving the cracking and joint leakage defects of rigid steel pipes under frequent dynamic movement on gangways.

Gangway hose adopts full vulcanized multi-layer integrated composite structure customized for topside marine harsh environments. The inner sealing liner selects H₂S-resistant HNBR or PVDF material to block erosion from sour crude, CO₂ and corrosive chemicals, avoiding medium permeation and inner layer swelling. Multiple layers of copper-plated high-strength spiral steel wire and polyester fiber braids form the pressure-bearing core, supporting working pressure up to 7500 psi for deepwater oilfield projects. The outer protective cover is flame-retardant chloroprene rubber mixed with anti-ozone and anti-UV additives, resisting long-term seawater splashing and coastal sunlight aging. Optional stainless steel interlock armor can be installed externally to prevent scratch and friction damage on narrow gangways; integrated molded bend stiffeners at both ends stop sharp bending kinks to maintain full-bore unobstructed flow.

Unique performance advantages make gangway hose irreplaceable for cross-platform gangway fluid transmission. Firstly, excellent bending and torsion fatigue resistance enables stable service for over 20 years under frequent reciprocating swing without interlayer delamination, cracking or blistering. Secondly, duplex steel anti-sulfur end fittings are integrally vulcanized with the hose body, eliminating joint loosening and leakage risks under long-term gangway vibration. Thirdly, the wide operating temperature range covers -30℃ to +105℃, maintaining reliable sealing in frigid sea areas and high-temperature production decks. Smooth inner bore reduces fluid turbulence and pressure loss to stabilize medium conveying efficiency.

Gangway hose covers all mainstream offshore topside fluid delivery scenarios. Medium and large-caliber gangway hose acts as main crossover pipelines on FPSO and fixed platform gangways for crude export and gas lift circulation. Small-specification products undertake injection water, fire-fighting fluid and chemical agent transfer across short gangway spans. It is also widely applied for hydraulic control line connection and auxiliary fuel delivery on FLNG, FSRU and drilling platform walkways, with customizable single length from 10m to 60m according to actual gangway span design.

Strict procurement and factory inspection specifications must be followed when purchasing gangway hose. Buyers need to verify complete official API 17K certification monogram, select inner diameters from 2 inch to 12 inch matching platform flanges and quick connectors, and confirm pressure grade based on actual process working pressure. All finished gangway hose must pass hydraulic burst test, long-term pulse fatigue test, flame retardant test and seawater aging test before delivery. Ordinary uncertified marine rubber hoses lack anti-sulfur and dynamic fatigue performance, which are prohibited for long-term gangway oil & gas service to avoid leakage, production halt and marine pollution accidents.

In summary, gangway hose is the exclusive safe flexible connection solution for cross-platform gangway layout. Deploying fully API 17K certified industrial-grade gangway hose significantly cuts pipeline failure frequency and offshore operation & maintenance costs, and ensures continuous secure fluid transportation under long-term complex dynamic marine working conditions.