Fuel Supply Line

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Fuel Supply Line

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The Fuel Supply Line is a critical channel in the fuel supply system, responsible for transporting fuel from the fuel tank through components such as the pump and filter to the engine's injectors or carburetor, ensuring reliable and accurate fuel delivery. It often forms a complete fuel supply system with a fuel pump, fuel filter, and pressure regulating valve.

Product Features:
Made of materials resistant to corrosive fuels such as gasoline, diesel, ethanol/biodiesel, ensuring long service life.
It can withstand the high pressures generated by fuel system operation and the high ambient temperatures within the engine compartment, ensuring safe fuel delivery.
It utilizes a multi-layer structure or specialized material design to effectively prevent fuel vapor from escaping into the atmosphere, meeting stringent environmental and emissions regulations.
Precise connectors and mounting design ensure a tight, leak-proof connection with the fuel tank, filter, and engine injection system, ensuring driving safety.

NINGBO JIATIAN AUTOMOBILE PIPE CO.,LTD.

About JIATIAN

The company is located in Wanhou, Zhanqi Town, Yinzhou District, Ningbo City. It is 25 kilometers away from Ningbo Liushi Airport and 5 kilometers away from Ningbo Coastal Industrial Zone. The surrounding area is beautiful with convenient transportation. The company was established on the basis of the development of Ningbo Xingxin Metal Products Factory (established in 1995), and is a high-tech enterprise specializing in the production of automotive pipe fittings. The company's area is 32,000 square meters; the factory area is 26,000 square meters.

The main products of the company are: manufacturing and development of automotive corrugated pipes. Currently, there are 10 CNC fully automatic pipe bending machines, 2 large-scale brazing furnaces assembly lines, 10 various specifications hydraulic internal forming machines (with the maximum processing length of 1.5 meters and diameters ranging from ￠10 to ￠80), 1 800T hydraulic water expansion machine, 4 fully automatic laser welders, 4 sets of welding robots, 8 large-scale machining centers, 6 Panasonic arc welding machines, and over 30 various supporting pipe forming machines. The company has its own R&D and processing centers. The water expansion corrugated pipe equipment and technology of the company are currently at the industry leading level. A comprehensive laboratory has been established.

The company is committed to creating the world's leading automotive bellows with outstanding quality and innovative technology, ensuring that each product can perform well in various environments and promoting the progress of the industry.

NINGBO JIATIAN AUTOMOBILE PIPE CO.,LTD.

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Fuel Supply Line Industry knowledge

In automotive fuel systems, lines are not merely simple conduits for fuel delivery; they are the critical lifeline ensuring efficient, clean, and safe engine operation. With increasingly stringent emission regulations, diversification of fuel compositions (such as ethanol, biodiesel blends), and continuously rising temperatures and pressures within the engine compartment, traditional lines face severe challenges including?corrosive permeation, high-pressure bursting, evaporative emissions, and connection failures. Line failure can directly lead to power loss, excessive emissions, and even safety hazards.

Addressing these industry pain points,?JIATIAN, leveraging nearly three decades of deep expertise in automotive pipe fittings manufacturing, offers?high-tech fuel supply lines?as the core solution. Through the integration of?materials science, structural design, and precision manufacturing, we provide?reliable, environmentally friendly, and high-performance?fuel delivery assurance for vehicle and system manufacturers. Our products meet China VI and above emission standards, are compatible with various new fuels, and support the industry's shift towards higher efficiency and cleaner operation.


What is a Fuel Supply Line?

The fuel supply line is the complete delivery network connecting the fuel tank, pump, filter, pressure regulator, and finally the engine injectors or carburetor. It functions like the vehicle's "vascular system," responsible for the continuous, stable, and precise delivery of fuel to the engine's heart under complex operating conditions.

Traditional Lines vs. JIATIAN High-Performance Lines

Comparison Dimension Traditional / Low-Standard Lines JIATIAN High-Performance Fuel Lines
Core Mission Basic fuel delivery Safe, precise, and environmentally compliant high-pressure fuel delivery
Regulatory Compliance Meets basic emission requirements Proactively compatible with the most stringent evaporative emission and environmental regulations like China VI, Euro 6
Fuel Compatibility Standard gasoline/diesel Fully compatible with corrosive fuels like gasoline, diesel, ethanol, biodiesel
Design Philosophy Single-function oriented System safety and long-term reliability oriented

Core Functions & Performance

  1. Corrosion Resistance & Long-Term Durability

    • Industry Need: Modern fuel additives and alternative fuels (e.g., ethanol) are chemically corrosive to rubber, plastics, and metals, easily causing lines to age, become brittle, or clog.

    • JIATIAN Solution: Utilizes?special polymer composite materials or dual/multi-layer metal structures. The inner layer possesses exceptional chemical corrosion resistance, ensuring no performance degradation after long-term contact with various fuels, significantly extending service life.

  2. High-Pressure & High-Temperature Resistance

    • Industry Pain Point: Direct injection engines bring higher system pressures, and engine bay ambient temperatures are extremely high, causing ordinary lines to expand, deform, or burst.

    • JIATIAN Core Technology: Lines incorporate?reinforcement layer design?(e.g., high-strength braiding), capable of withstanding system pulse pressures up to several tens of Bar and extreme temperature ranges from?-40°C to 150°C, ensuring shape and performance stability under all operating conditions, eliminating safety risks.

  3. Ultra-Low Permeation & Environmentally Sealed

    • Regulatory Core: Stringent evaporative emission regulations require near-zero fuel vapor leakage.

    • JIATIAN Innovative Design: Employs?multi-layer barrier structures?(e.g., EVOH barrier layer) or?special low-permeability materials, effectively blocking hydrocarbon molecules from permeating the pipe wall, reducing fuel vapor emissions to extremely low levels, helping OEMs easily meet environmental regulations.

  4. Precision Connection & System Integration

    • Safety Critical: Leakage at connection points is the most common fuel system failure.

    • JIATIAN Process Assurance: Utilizing?advanced CNC tube bending, hydraulic internal forming, laser welding, and robotic welding technologies, ensuring each pipe section and its fittings (e.g., quick-connect couplings, flanges) achieve?millimeter-level precision matching. Combined with leading proprietary processes like hydroforming for corrugated pipes, connections to components like the tank, filter, and fuel rail are guaranteed?to seal correctly on first assembly, aiming for maintenance-free service life.


JIATIAN Product Highlights & Brand Strength

Highlight Dimension Specific Manifestation Value to Customers
Manufacturing Capability 32,000㎡ site, equipped with a?full chain of high-end equipment?including 10 CNC automatic tube benders, 4 laser welders, an 800T hydraulic hydroforming machine, etc., with max processing diameter up to ￠80. Stable supply capacity for large-volume, high-consistency, complex-shaped pipes.
Technical Leadership Industry-leading hydroforming technology and equipment for corrugated pipes, supported by in-house R&D center and comprehensive laboratory. Access to?innovative line solutions with superior structure, higher strength, and lighter weight, enhancing vehicle performance.
Quality Control Full-process in-house processing and inspection?from raw material to finished product, utilizing large machining centers and welding robots to ensure process consistency. Every line delivers exceptional reliability and safety, reducing vehicle failure rates and after-sales risks.
Legacy & Experience Originating from Ningbo Xingxin Metal Products Factory established in 1995, with?nearly 30 years of focus on automotive pipe fittings manufacturing. Deep understanding of industry trends, material evolution, and process challenges, positioning us as a?trustworthy long-term partner.

Our Mission: Committed to creating?world-leading automotive bellows and line systems with outstanding quality and innovative technology, ensuring each product performs excellently in all environments and promoting industry progress.

Frequently Asked Questions (FAQ)

Q1: Are your fuel lines suitable for ethanol-blended gasoline (e.g., E10) or high-percentage biodiesel?
A:?Absolutely. Our lines undergo comprehensive material selection and structural design phases, including thorough compatibility testing and validation for various corrosive modern fuels. This ensures no performance degradation or failure occurs due to the chemical properties of the fuel during long-term use.

Q2: How do you ensure line reliability in high-pressure direct injection systems?
A:?We guarantee this through two aspects: First,?Material & Structure?– using multi-layer reinforcement designs to ensure burst pressure far exceeds the system's maximum operating pressure. Second,?Process & Testing?– employing advanced forming/welding processes and a complete laboratory for full endurance tests like pulse pressure, burst pressure, and fatigue strength. Products are only released after passing all data benchmarks.

Q3: What specific measures do you take to meet evaporative emission regulations?
A:?We primarily utilize?multi-layer co-extrusion technology?or?integrated ultra-low permeability barrier layers. This structure acts like a "permeation barrier wall," reducing fuel vapor permeation rates to less than one percent of traditional single-layer materials. This effectively helps the complete vehicle system meet the strictest evaporative emission limits like China VI.

Q4: We require lines with complex shapes and high precision. Can JIATIAN achieve this?
A:?This is one of our core strengths. We possess?full-chain, high-precision manufacturing capabilities from CNC precision bending and hydraulic internal forming to laser welding, with a maximum processing length of 1.5 meters and support for complex 3D routing. Combined with collaborative design from our in-house R&D center, we can provide a one-stop, high-precision solution from blueprint to finished product.