Published: 2026-08-19
Shanghai Suoqi Cable Co., Ltd. specializes in the field of special flexible cables. The following provides a professional analysis of seawater-resistant network cables from three dimensions: material structure, performance advantages, and application scenarios.
Product original reference: Special cable with seawater-resistant, corrosion-resistant weak acid and alkali sheath
1. Materials and Structural Parameters
Characteristics of Sea-resistant Cables: They are used in important situations such as between distant islands and across-sea facilities. The laying distance of submarine power cables is much shorter compared to communication cables, mainly used between mainland and islands, across rivers or bays, connecting from the mainland to drilling platforms, or for interconnections between drilling platforms. In general, using submarine cables to transmit power is undoubtedly more expensive than overhead cables of the same length, but it is often more economical than using small, isolated power plants for regional power generation, and its benefits are greater in offshore areas. This type of cable is widely used in places with many islands and rivers.
Suoqi Cable (Shanghai) Co., Ltd. specializes in designing and customizing electrical wires and cables for mechanical equipment used for extension/retraction and towing in deep water. Various specifications of underwater robot cables can be customized according to customer requirements, such as for signal transmission, power supply, and equipment control systems.
When ordering, please specify the usage environment: such as tensile load, whether it is used for mobile or fixed installation, underwater environment (freshwater or seawater) depth, etc. Underwater cables can be divided into: ① video cable; ② signal cable; ③ control cable; ④ power cable; ⑤ composite cable. Applications of underwater cables: Underwater ROV unmanned remotely operated vehicles - underwater filming, underwater salvage, underwater construction, etc. Equipped with underwater robotic arms, hydraulic cutters, and other working tools. The underwater environment is harsh and dangerous, and human diving depth is limited. Underwater robots have become an important tool for ocean development, and in such environments, ordinary cables are no longer suitable for operation, hence the emergence of underwater robot cables (special cables).
Sohu Cable (Shanghai) Co., Ltd. specializes in designing and customizing wires and cables for mechanical equipment used for extension/retraction or towing in deep water. Various specifications of underwater robot cables can be customized according to customer requirements, such as signal transmission, power supply, and equipment control systems.
Underwater operation robot cables Seawater protection cables Usage characteristics Underwater operation robot cables Seawater protection cables Usage characteristics Submarine cables are divided into submarine communication cables and submarine power cables. Submarine communication cables are mainly used for communication services, are expensive, but have a high degree of confidentiality. Submarine power cables are mainly used for underwater transmission of high-power electrical energy, serving the same function as underground power cables, but differ in application scenarios and laying methods. Because submarine cable engineering is recognized worldwide as a complex and difficult large-scale project, requiring complex technologies from environmental detection, marine physical surveys, to cable design, manufacturing, and installation, there are only a few manufacturers of submarine cables, mainly Norway, Denmark, Japan, Canada, the United States, the United Kingdom, France, Italy, and others. These countries also provide laying technology in addition to manufacturing.
Underwater Cable Structure: Conductor Core: Multi-stranded fine oxygen-free copper wire / Anti-corrosion tinned copper wire Conductor Structure: Anti-twist layered structure; Grouped gap filling; Layered bundling after twisted pair insulation: Waterproof mixed raw material PVC / Corrosion-resistant Teflon plastic Color: Black with white number markings or color-coded core identification Tensile Structure: Polyester yarn / High-strength tensile Kevlar bulletproof fiber / Fine-stranded steel wire Wrapping Material: To make the cable rounder and firmer, can be added raw tape (PTFE) or high-quality non-woven fabric (cost-effective) Shield: Aluminum foil shield / Copper mesh braid / Tinned copper mesh braid shield Inner Sheath: Modified low-viscosity high-strength extruded inner sheath, customizable (optional depending on environment) Outer Sheath: Special material for seawater resistance (waterproof, acid and alkali resistant, radiation resistant, corrosion resistant, anti-microbial) Underwater Robotic Cable Seawater-resistant Cable Features Underwater Robotic Cable Seawater-resistant Cable Features Electrical Characteristics: Temperature Range: Fixed laying: -60°C to 105°C; Mobile installation: -50°C to 105°C; Radiation resistance: 8×107 cJ/kg (for seawater-resistant cable 5×107 cJ/kg) Electrical Characteristics: Temperature Range: Fixed laying: -60°C to 105°C; Mobile installation: -50°C to 105°C; Radiation resistance: 8×107 cJ/kg (for seawater-resistant cable 5×107 cJ/kg) 1. Signal Line: Rated voltage: 300/350V Test voltage: 1500V Insulation resistance: >20GΩ·cm Mutual capacitance: approx. 110nF/km Inductance: approx. 0.65mH/km Minimum bending radius: Fixed installation 3×D (cable outer diameter); Mobile use 5×D (cable outer diameter) 2. Control Line: Rated voltage: 300/500V; Above 2.5mm² 600/1000V Test voltage: 4000V Insulation resistance: >20GΩ·cm Minimum bending radius: Fixed installation 6×D (cable outer diameter); Mobile use 12×D (cable outer diameter) 3. Power Line: Rated voltage: 600/1000V Test voltage: 4000V-6000V Insulation resistance: >20GΩ·cm Minimum bending radius: Fixed installation 6×D (cable outer diameter); Mobile use 10×D (cable outer diameter) Underwater Robotic Cable Seawater-resistant Cable Features 5. Southeast Asian Markets: Countries in Southeast Asia such as Japan, South Korea, Philippines, Malaysia, Indonesia, Vietnam, Thailand, etc., do not yet have the capability to produce submarine cables, and many regional submarine cable projects import optoelectronic composite submarine cables from Western Europe at a high cost. By comparison, Chinese submarine cable manufacturers have advantages in cost and geographic location.
Underwater cable structure: conductor core: multi-strand fine-stranded oxygen-free copper wire / anti-corrosion tinned copper wire; conductor structure: anti-twist layered structure; grouped gap filling; twisted pair structure with layered bundled cable features: 1. High flexibility - high toughness - bending resistance - twisting resistance (prevents internal core breakage during frequent bending) 2. Abrasion resistance - notch resistance - high pressure resistance (outer sheath stabilizes against external force damage) 3. Electronic interference resistance - integrated braiding high shielding density and special structural design effectively resist external and internal cable interference, ensuring signal transmission stability 4. Tensile strength - underwater impact resistance - high-strength Kevlar tensile fiber serves as the cable's tensile center or tensile braiding, forming the cable round to evenly bear tensile forces, ensuring long-term effective operation without cracking. (When working underwater, cables can withstand the tensile forces of connected equipment or heavy objects, with a maximum breaking force of over 1 ton. In special cases, tensile steel wire can be added.) 5. Seawater Resistance—Extremely Strong Weather Resistance—Effective for underwater operation (cold resistance, oxidation resistance, antimicrobial resistance, radiation protection, corrosion resistance, ozone resistance, acid and alkali salt spray corrosion resistance). 6. Sheath—Made with imported TPU special materials mixed with special materials—Effectively designed for seawater and other harsh environments.
7. Easy to distinguish—core insulation color, sheath color, and cable length can be customized according to customer requirements
2. Performance Technical Indicators
This series of products undergoes strict process control and quality inspection, ensuring stable and reliable performance that meets the needs of various industrial application scenarios.
3. Application Scenarios
Anti-seawater network cables are widely used in industrial automation, lifting and transportation, ports, and docks.
About Shanghai Suoqi
Shanghai Suoqi Electric Wire & Cable Co., Ltd. is a specialized cable enterprise focusing on the research and development, design, production, and sales of special flexible cables. The company's products cover a series including reel cables, flat cables, drag chain cables, encoder cables, polyurethane cables, seawater-resistant cables, seawater-resistant network cables, and high-altitude vehicle cables, which are widely used in ports machinery, mining, industrial automation, marine engineering, and other fields. For more product information or inquiries, please call 13311756197 (same number on WeChat).