Multi-core Tubing

Multi-core Tubing

Marine Stainless Steel Multi-core Tubing / Control Line Tubing

TOKO TECH Marine Stainless Steel Multi-core Tubing / Control Line Tubing

​​​​Shanghai Toko Tech Co., Ltd.​​ is a professional manufacturer of high-performance stainless steel and special alloy tubing. Its Marine Stainless Steel Multi-Lumen Tubing (also referred to as “Control Line Tubing” or “Marine Cable Tubing”) is an integrated solution specifically designed for harsh marine environments, used for the centralized routing and protection of hydraulic, lubrication, control, and instrumentation lines on ships and offshore platforms.

​​Product Overview​​

TOKO TECH Marine Multi-core Tubing consists of multiple independent stainless steel tubes (cores) aligned in parallel and securely integrated within a common outer sheath through a welding process, forming a compact bundle. Each lumen can serve as an independent channel for fluids (hydraulic oil, lubricant), gases, or for housing control cables and instrumentation wires, enabling high-density, standardized routing of multiple functional lines.​​Core Value:​​ Provides an ​​integrated, space-saving, corrosion-resistant, vibration-resistant, easy-to-install and maintain​​ solution for ship piping/wiring systems, significantly improving shipbuilding efficiency and system reliability.

​​Features & Advantages​​

1.​​Excellent Marine Corrosion Resistance:​​

• Lumens and sheath are typically made from ​​316/316L marine-grade stainless steel​​. The Molybdenum (Mo) content provides superior resistance to pitting and crevice corrosion caused by chlorides (seawater, salt spray), making it fully suitable for marine atmosphere and immersion environments.

2.​​High Structural Integrity & Mechanical Protection:​​

• The robust outer sheath offers ​​excellent mechanical protection​​ for the inner lumens or cables, effectively resisting impact, abrasion, crushing, and continuous vibration during vessel operation.
• The integrated structure prevents issues like friction and entanglement common with loose bundles of individual tubes/wires.

3.​​Space Optimization & Neat Routing:​​

• Integrates complex multi-line systems into a single compact unit, greatly saving space in confined areas like engine rooms and pipe tunnels, resulting in ​​tidy, standardized, easily identifiable, and maintainable​​ piping/wiring.

4.​​Simplified Installation, Improved Shipbuilding Efficiency:​​

• A single installation completes the routing for multiple lines, ​​significantly reducing the number of supports and welding/connection points​​, shortening shipbuilding cycles, and lowering labor costs and installation error risks.

5.​​Enhanced Safety & Reliability:​​

• Independent channels effectively ​​prevent cross-interference from fluid leaks or line failures​​. The sturdy structure also reduces the risk of system failure due to line damage, complying with marine safety standards.

6.​​Long Service Life & Low Maintenance Costs:​​

• The corrosion-resistant stainless steel and fatigue-resistant structure ensure ​​exceptionally long service life and minimal maintenance requirements​​ throughout the vessel’s lifecycle.

​​Manufacturing Process & Quality Control​​

• ​​Precision Forming & Welding:​​ Utilizes high-precision rolling and TIG welding to manufacture each lumen. Multiple lumens are formed into a robust unit via a welded outer wrapping strip.
• ​​Stringent Quality Control:​​
• ​​Material Certification:​​ Ensures use of 316/316L stainless steel compliant with marine rules.
• ​​Pressure Testing:​​ Each lumen (for fluid service) undergoes hydrostatic/pneumatic testing to ensure sealing integrity and pressure capability.
• ​​Non-Destructive Testing (NDT):​​ NDT methods like eddy current testing are performed on critical welds.
• ​​Surface Treatment:​​ Pickling and passivation treatments are applied to maximize corrosion resistance.
• ​​Compliance:​​ Product design and manufacturing can adhere to ​​Classification Society rules​​, such as China CCS, American ABS, Norwegian DNV, German GL, etc.

​​Typical Specifications & Structure​​

• ​​Material:​​ 316, 316L, or other marine-grade stainless steel as required.
• ​​Number of Lumens:​​ 2, 3, 4, 7, etc. (Highly customizable).
• ​​Lumen Function:​​
• ​​Fluid Line:​​ For hydraulic/lubrication systems, typically sealed and pressure-rated.
• ​​Cable Conduit:​​ For routing control cables/signal wires; can be open, airtight, or watertight conduits.
• ​​Outer Diameter (Assembly):​​ Customized based on lumen count and size; common range φ15mm ~ φ50mm or larger.
• ​​Length:​​ Supplied in long coils (for easy installation) or straight lengths as required.

​​Primary Marine Applications​​

1.​​Engine Room Systems:​​ ​​Hydraulic control bundles​​ and ​​lubricant supply bundles​​ for main/auxiliary engines; instrumentation signal tubing bundles.

2.​​Deck Machinery:​​ ​​Multi-line hydraulic control and power lines​​ for steering gears, cranes, winches, mooring equipment.

3.​​Control Systems:​​ ​​Electro-hydraulic control signal tubing bundles​​ connecting the bridge/control room with various actuators.

4.​​Instrumentation Systems:​​ Centralized routing for ​​instrument air tubing and signal cable conduits​​ to various monitoring points (pressure, temperature, level).

​​Why Choose TOKO TECH Marine Multi-Lumen Tubing?​​

• ​​Material Expertise:​​ Deep understanding of marine environmental demands, insisting on using high-quality marine-grade stainless steel.
• ​​Structural Design Capability:​​ Provides optimal lumen count, arrangement, and structural design based on specific vessel layout and functional needs.
• ​​Quality Assurance:​​ Strict production and testing processes ensure product reliability and safety for marine applications.
• ​​Certification Support:​​ Possesses experience and capability to support product certification with major classification societies.

​​In summary,​​ TOKO TECH Marine Stainless Steel Multi-Lumen / Control Line Tubing is a key component for achieving standardized, integrated, and efficient piping/wiring in modern shipbuilding. Its exceptional corrosion resistance and structural reliability provide a solid foundation for the safe and efficient operation of vessels, making it an ideal choice for shipowners, shipyards, and naval architects for complex routing applications.