Stainless Steel Multi-Core Tubes
In the field of industrial fluid control and transmission, efficient and reliable pipeline systems are core elements ensuring stable equipment operation. As a key component specialized for high-end industrial scenarios, stainless steel multi-core tubes are manufactured from high-quality stainless steel coiled tubes, combined with multi-core integrated structures and corrosion-resistant outer plastic materials. With their excellent material properties, flexible structural design, and wide applicability, they have become the preferred solution for complex working conditions in well control platforms, oilfield engineering, marine equipment, shipbuilding, chemical industry, and other fields. Their design supports single ultra-long fixed-length or multi-core cable configurations, significantly reducing joint usage, enhancing system reliability, and lowering maintenance costs. The following details the product from dimensions such as product characteristics, technical parameters, application scenarios, and value advantages.
一、Core Technical Advantages: Redefining Industrial Pipeline Solutions
（1）Innovative Structural Design for Efficient Operation and Maintenance.
1：Using ultra-long stainless steel coiled tubes as the base material, stainless steel multi-core tubes break through the limitations of traditional segmented pipeline connections, achieving single-tube manufacturing with the longest fixed length (customizable as needed). This reduces joint usage from the source, minimizing leakage risks and maintenance costs. Each inner tube is equipped with a differentiated color OVC sheath, enabling quick functional identification through color coding, which significantly improves installation and maintenance efficiency—especially suitable for precise management of complex multi-pipeline systems.
2：The more revolutionary multi-core cabling technology integrates 2-12 inner tubes with different functions into a single outer protective layer, forming a compact "one-cable, multi-control" structure. Compared with traditional single-tube combinations, it saves over 50% of pipeline layout space while avoiding installation hazards caused by multi-tube winding, providing key support for lightweight and integrated designs of high-end equipment.
（2）Full-Scenario Adaptable Materials for Extreme Working Conditions.
Relying on a rich material library, the product covers 18 high-performance materials such as austenitic stainless steel, duplex stainless steel, and nickel-based alloys:
1：General Scenarios: TP304/304L and TP316L are widely used in conventional hydraulic systems due to their good corrosion resistance and cost-effectiveness.
2：Harsh Environments: Materials like S31803/S32205 (duplex steel), N08904 (904L), and N10276 (Hastelloy) can operate stably in chloride-ion-containing, high-acid/alkali, high-temperature/pressure environments, meeting the needs of high-risk scenarios such as oilfields and marine platforms.
3：Special Working Conditions: N06625 (Inconel alloy), with excellent high-temperature oxidation resistance and stress corrosion resistance, is suitable for precision control fields like aerospace and nuclear power.
（3）Precise Specification System to Meet Diverse Needs.
1：Outer Diameter Range: 6mm–12.7mm (covering 1/4"–1/2" inch specifications), adapting to different flow rates and pressure classes.
2：Wall Thickness Options: 1mm–2mm, with wall thickness optimized via finite element analysis to ensure compressive strength (maximum pressure resistance 100MPa, depending on material and structure) while reducing pipeline weight.
3：Outer Sheath Materials: Seven types of insulating sheaths are available, including PVC, TPU, PP, PVDF, ECTFE, ETFE, and FEP, which can be customized according to medium characteristics (e.g., corrosiveness, temperature) and environmental requirements (e.g., wear resistance, flame retardancy). Among them, PVDF sheaths can withstand temperatures up to 150°C, and FEP sheaths have a surface friction coefficient as low as 0.05, suitable for high-speed fluid transmission.
二、Diverse Application Scenarios: Versatile Carriers for Industrial Fluid Control.
（1）Oil and Gas Extraction: Fortifying Well Control Safety.
In high-risk operations such as shale gas and deep-sea oilfields, stainless steel multi-core tubes serve as core components for hydraulic pipelines in well control platforms and control valve pipelines in oilfields. They can withstand temperatures above 100°C and corrosive media like H₂S and CO₂, ensuring reliable operation of emergency well shutdown systems and blowout preventer control pipelines, providing 24/7 safety guarantees for drilling operations. Their multi-core cabling design can integrate functions such as hydraulic oil delivery, control signal transmission, and chemical agent injection, simplifying complex pipeline layouts at subsea wellheads.
（2）High-End Equipment: The Nervous System of Precision Control
As hydraulic control pipelines and continuous hydraulic control pipelines, the product accurately transmits pressure signals in construction machinery, injection molding machines, and aviation hydraulic systems through excellent fatigue resistance, avoiding control delays or failures caused by pipeline vibration or aging. For example, in shield machine hydraulic systems, multi-core tubes integrate multiple control pipelines for propulsion, grouting, and articulation via a single cable, ensuring millimeter-level precision in tunnel construction.
（3）Marine Engineering: Reliable Solutions for Extreme Environments.
In the umbilical cable field, stainless steel multi-core tubes are integrated with power cables and optical fibers to form the "blood vessels and nerves" of deep-sea oil and gas platforms. They can stably transmit hydraulic power, control signals, and chemical agents under temperatures ranging from -20°C to 200°C and water pressures at 6,000 meters depth, with a seawater corrosion resistance lifespan of over 20 years—far exceeding traditional rubber hoses and carbon steel pipelines.
（4）Specialized Industries: Experts in Customized Solutions.
For special needs in nuclear power, chemical, and pharmaceutical industries, customized solutions such as inner wall roughness (Ra≤0.4μm), sterile-grade outer sheath materials, and explosion-proof certifications are available. For example, ECTFE-sheathed multi-core tubes designed for lithium battery production lines can withstand electrolyte corrosion and have anti-static functions.
三、Quality Assurance: Full-Process Control for Exceptional Performance.
（1）International Standard Production System.
Strictly following international standards such as ASTM A269 (seamless and welded austenitic stainless steel tubes), ASTM A249 (welded austenitic steel tubes for boilers and superheaters), and ASTM A213 (seamless ferritic and austenitic alloy steel tubes), the production process includes 10 full-inspection procedures from raw material smelting, cold rolling, heat treatment to non-destructive testing (eddy current/water pressure testing). This ensures key indicators such as pipe dimensional accuracy (outer diameter tolerance ±8%) and intergranular corrosion grade (compliant with ASTM A262-E method) exceed industry standards.
(2) Authoritative Certification Endorsement
The company is certified under ISO9001:2015 (quality management system), ISO14001:2015 (environmental management system), and ISO45001:2018 (occupational health and safety management system), and has obtained the EU PED (Pressure Equipment Directive) certification. Products can be directly applied to pressure-bearing equipment within the CE certification scope. The HSE management system ensures green and environmentally friendly production processes, controlling hazardous substance emissions from the source.
四、Customer Value: Beyond Products, Understanding Needs.
1：Cost Optimization: The multi-core cabling scheme reduces joint procurement and installation costs by 30–40%, while single ultra-long fixed-length tubes eliminate material waste, cutting full-life-cycle maintenance costs by 50%.
2：Efficiency Improvement: The color-coded identification system shortens fault diagnosis time by 50%, and the flexible coiled tube design increases installation efficiency in complex scenarios by 40%.
3：Safety Enhancement: The dual anti-corrosion design in materials and structure reduces pipeline leakage risks by 70%, while fatigue resistance extends equipment service life by over 20%.
4：Customization Flexibility: Full-parameter customization of materials, outer diameter, wall thickness, and sheath materials is supported, with proofing solutions available within as fast as 72 hours.
Conclusion
Stainless steel multi-core tubes are not just industrial pipes but also value bridges connecting equipment and efficiency. From onshore oilfields to deep-sea platforms, and from traditional industries to high-end manufacturing, we (always) drive innovation through materials and focus on customer needs, providing global industrial users with "safe, efficient, and intelligent" fluid control solutions. We look forward to collaborating with you to build a new future for multi-core cables.
Jingning Junwen Steel Co., Ltd.—Specialized in stainless steel multi-core tube innovation, empowering smart industrial fluid transmission!
Note: Sheath colors, material combinations, and cabling structures can be adjusted according to actual needs. For details, please contact us.
