Fuel lines on excavators, tractors, and combine harvesters don't have an easy life. They run through engine bays that bake in summer and freeze in winter, they get coated in diesel and mud, and they're expected to flex with the machine's every movement without cracking or seeping. A generic fuel hose might last a season. This one is built to outlast several.
Hengshui Zhehan developed this Special Rubber Hoses for Fuel Lines of Construction Machinery and Agricultural Machinery specifically for the fuel systems of heavy equipment and farm machinery. The construction starts with an NBR inner tube that holds its shape and seal against gasoline, diesel, and biodiesel blends up to B20. Around that tube is a multi-layer textile reinforcement designed to handle the pressure pulses, vibration, and suction cycles that come with diesel engines and hydraulic-driven equipment. An outer cover formulated for weather and abrasion resistance keeps everything intact when the hose is routed along a tractor frame or through an excavator's boom arm. The result is a fuel line that cuts replacement frequency and keeps machines working, not sitting in the shop.
Excavators, wheel loaders, bulldozers, and compactors operate with high engine compartment temperatures and constant low-frequency vibration. This Special Rubber Hoses for Fuel Lines of Construction Machinery and Agricultural Machinery is used on engine fuel supply and return circuits, where its textile-reinforced body resists kinking and its cover shrugs off contact with metal edges and abrasive grit. It maintains consistent flow even under hot-soak conditions after shutdown.
Tractors, combine harvesters, rice transplanters, and forage choppers run through mud, dust, crop residue, and direct sunlight for hours on end. The hose's outer cover withstands exposure to UV, rain, and temperature swings from freezing mornings to midday heat. Its flexibility allows tight routing around implement frames and hydraulic lines without collapsing under suction.
For service shops and fleet maintenance crews replacing hardened or leaking fuel lines on older machines, this hose offers standard ID sizes that match common OEM fittings. It can be cut to length on-site and installed with standard ferrules and clamps, making it a practical replacement option without long lead times.
Auxiliary fuel tanks, transfer pumps, and small stationary engines that sit outdoors benefit from a fuel hose that doesn't stiffen in cold weather or soften in heat. The hose's aging-resistant cover and oil-resistant tube keep fuel contained in applications where a leak could become an environmental or fire hazard.
The NBR compound used for the core is selected for sustained contact with gasoline, diesel, and B20 biodiesel. In immersion testing, it shows roughly 80% less swelling and hardening than generic rubber after prolonged fuel exposure. That dimensional stability is critical for maintaining a tight seal at the fitting barb over thousands of hours.
A multi-layer textile braid distributes hoop stress evenly, giving the hose a continuous working pressure rating of 2.0 MPa and the ability to handle momentary surges up to 2.5 MPa. Whether on the suction side of a lift pump or the pressure side of a fuel supply module, the hose keeps its round profile without collapsing or ballooning.
The outer cover incorporates UV inhibitors and anti-aging additives into the rubber matrix. This slows the oxidation and surface cracking that plague hoses left exposed on equipment parked outdoors. Across temperature cycles ranging from -40°C to 120°C, the cover remains pliable and crack-free, delivering a service life that routinely doubles that of economy fuel hose.
With a minimum bend radius of just 6 times the hose OD, this line can follow the contours of engine compartments and articulated joints without kinking. That flexibility, combined with a smooth, uniform inner bore, keeps flow resistance low and reduces the strain on hose clamps and bulkhead connectors.
The Special Rubber Hoses for Fuel Lines of Construction Machinery and Agricultural Machinery is manufactured with a seamless, void-free wall structure. In impulse testing, it has withstood over one million pressure cycles without weeping or fitting separation—performance that translates directly into fewer fuel drips on the shop floor or in the field. Burst pressure exceeds industry norms by a comfortable margin, providing a safety buffer for real-world operating conditions.
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Parameter |
Specification |
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Working Pressure |
2.0 MPa continuous; 2.5 MPa transient |
|
Inner Diameters |
4, 6, 8, 10, 12, 16 mm (custom sizes available) |
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Standard Coil Lengths |
10 m, 20 m, 50 m (cut lengths on request) |
|
Construction |
Inner: NBR oil-resistant rubber; Reinforcement: multi-layer textile braid; Cover: weather-resistant synthetic rubber |
|
Operating Temperature |
-40°C to 120°C |
Select fittings that match the hose ID and secure them with the correct clamp or ferrule type. Route the hose so it isn't under tension, twist, or constant sharp-radius bending at the fitting exit. Avoid contact with sharp brackets, hot exhaust surfaces, and moving parts that could abrade the cover over time. Keep operating pressure and temperature within rated limits.
During routine equipment checks, glance over the full length of accessible fuel hoses. Look for surface cuts, bulges, soft spots, or cracks near fittings. If a hose has been subjected to an impact or excessive heat, consider replacing it even if damage isn't immediately obvious. Catching a compromised section early prevents a roadside breakdown or a field fire.
When a machine will be idle for an extended period, draining the fuel line can reduce the effects of stagnant fuel on the inner tube. Store spare hoses loosely coiled in a cool, dry, ventilated area, away from direct sunlight, electric motors that generate ozone, and chemicals that could attack the rubber. Avoid stacking heavy items on top of coiled hose.
Is there a minimum order quantity?
For standard stock sizes, there isn't a restrictive minimum. You can order a single coil for a maintenance job or pallet quantities for production. Inventory is kept on popular diameters, and custom runs are scheduled with clear lead times communicated before you commit.
Can this hose handle biodiesel blends like B20?
Yes. The NBR inner tube is formulated to resist the swelling and softening effects of biodiesel blends up to B20. If you're running higher bio-content fuel or a specific additive package, let us know—we can check compatibility or suggest a compound variant for your exact fuel mix.
What if my equipment needs a non-standard diameter or wall thickness?
We manufacture custom sizes and can match a sample or drawing you provide. Options include special inner diameters, reinforced or extra-thick walls for high-abrasion areas, color-coded covers, and printed branding or part numbers directly on the hose.
How do I know which inner diameter I need?
The simplest approach is to measure the OD of the metal line or fitting barb the hose will slide onto. A snug fit is essential for proper sealing. If you're unsure, send us the equipment model or a photo, and we'll recommend the standard size that fits most applications on that machine.
Do you provide samples for evaluation?
Yes. We routinely supply sample lengths so your team can test fit, clamp, and pressure-cycle the hose before committing to a larger order. Just tell us about your operating conditions, and we'll send a representative piece.
What's the warranty period?
The hose carries a 2-year warranty against defects in materials and workmanship under normal use. If a product issue arises that falls within the warranty terms, we replace the hose and work with you to identify the root cause so the same problem doesn't repeat.
How do I get a quote or talk through a technical question?
Contact the team at Hengshui Zhehan Rubber & Plastic Products Co., Ltd. directly. You'll reach people who work with fuel system components every day. Tell us what you need—diameters, lengths, fuel type, working pressure, environment—and we'll put together a recommendation and a price. No scripts, no pressure, just an honest conversation with a manufacturer that stands behind its work.
At Hengshui Zhehan, we don't treat fuel hose as a commodity. We understand that when a line fails on a combine in the middle of harvest or on an excavator at a remote job site, the cost goes far beyond the price of the hose itself. That's why this product is built the way it is, and why we're here to support it with technical guidance and consistent quality.
Address
No. 7126, Zhanggehou Rubber & Plastic Base, Jingzhou Town, Jing County, Hengshui City, Hebei Province, Chinaa
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