【Product Overview】

Cooling system rubber hose is a core supporting pipeline for engineering vehicle cooling systems, specially designed for antifreeze conveying between radiators, water pumps and intercoolers. It solves common pain points of ordinary hoses such as poor resistance to antifreeze corrosion, poor high and low temperature resistance, easy aging and cracking, and insufficient pressure resistance. Formed by multi-layer composite vulcanization process, the layers are tightly bonded without delamination or bulging. It can convey water/ethylene glycol mixed antifreeze for a long time, adapting to the wide temperature range of -40℃ ~ +120℃ for engineering vehicles. It also has excellent ozone aging resistance and flex fatigue resistance, complying with GB/T7762 industry standard, and is a key accessory for the safe and stable operation of engineering machinery cooling systems.

【Product Structure & Core Material Description】

1. Inner Rubber Layer: Made of food-grade EPDM (Ethylene Propylene Diene Monomer), with excellent corrosion resistance to water and ethylene glycol antifreeze, no swelling or precipitation of harmful substances by antifreeze. The smooth inner wall prevents antifreeze adhesion and residue, avoiding pipeline blockage during long-term use.
2. Reinforcement Layer: High-strength industrial yarn knitted reinforcement layer, evenly distributed in the middle of the hose, greatly improving the tensile and burst resistance of the hose, ensuring the burst pressure is not less than 5bar, while enhancing the flex fatigue resistance of the hose, adapting to the vibration and deformation during the operation of engineering vehicles.
3. Outer Rubber Layer: Weather-resistant grade EPDM (Ethylene Propylene Diene Monomer), ozone aging-resistant, high and low temperature resistant and UV-resistant. Complying with GB/T7762 standard requirements, no cracking after 72-hour test under ozone partial pressure of 50±5MPa and temperature of 40±2℃. It can be used in high-temperature engine compartments and outdoor environments for a long time without cracking or hardening.
4. • Operating Temperature Range: -40℃ ~ +120℃
   • Rubber Hardness: 70±5HA (Shore A Hardness)
   • Burst Pressure: ≥5bar
   • Applicable Media: Water, ethylene glycol mixed antifreeze (coolant)

     Physical Performance Parameters:

5. Specifications & Customization: Conventional inner diameter range DN10~DN100, customizable arbitrary length, caliber and special-shaped pipes (bent pipes, reducing pipes), adapting to various domestic/imported engineering vehicle cooling system pipeline interfaces.

【Core Performance Advantages】

1. Antifreeze Corrosion Resistant, No Swelling or Deterioration: EPDM material has excellent corrosion resistance to water and ethylene glycol antifreeze, no swelling, shrinkage or contamination of the medium during long-term conveying, avoiding antifreeze deterioration and pipeline blockage caused by hose aging.
2. Wide Temperature Range Adaptability: Operating temperature covers -40℃ ~ +120℃, stable use in low-temperature cold environments in the north and high-temperature engine compartment environments in the south, no brittleness, softening or leakage, adapting to the full regional operation needs of engineering vehicles.
3. Ozone Aging Resistant, Long Service Life Without Cracking: Compliant with GB/T7762 industry standard, excellent ozone resistance, no cracking after 72-hour ozone test, can resist the erosion of high temperature and high ozone environment in engine compartments, no cracking or hardening after long-term use, service life far exceeds ordinary rubber hoses.
4. Burst Pressure Resistant, Safe and Reliable: Built-in high-strength industrial yarn knitted reinforcement layer, burst pressure not less than 5bar, excellent tensile and anti-burst performance, avoiding pipe burst and liquid leakage caused by pipeline pressure fluctuations during engineering vehicle operation, ensuring stable operation of the cooling system.
5. Flex Fatigue Resistant, Anti-vibration and No Falling Off: High-strength knitted reinforcement layer paired with high-quality EPDM rubber, excellent elasticity and flex fatigue resistance, adapting to vibration and deformation during engineering vehicle operation, no falling off or leakage during long-term use.
6. Excellent Sealing Performance, Good Leak-proof Effect: The hose has excellent elasticity, adapting to various pipeline interfaces, tight sealing after installation, no leakage of antifreeze, reducing engine overheating failures caused by liquid leakage and lowering maintenance costs.
7. Non-standard Customization Supported, Wide Adaptability: Customizable caliber, length and shape according to customer vehicle models and pipeline layouts, adapting to cooling systems of various engineering vehicles such as excavators, loaders, bulldozers and road rollers.

【Main Application Scope】

• Engineering Machinery Field: Radiator inlet and outlet pipes, water pump connecting pipes, intercooler pipelines and heating system pipelines of excavators, loaders, bulldozers, road rollers, graders, forklifts and other engineering vehicles;
• Commercial Vehicle Field: Cooling system pipelines of heavy-duty trucks and buses;
• Industrial Equipment Field: Cooling system pipelines of generator sets, air compressors and other equipment.

【Direct Manufacturer Advantages】

We are a professional direct manufacturer of cooling system rubber hoses. Factory direct sales without middlemen with favorable prices, sufficient stock of conventional specifications and short lead time for non-standard customization. Products are strictly produced in accordance with industry standards such as GB/T7762. Each hose has passed medium resistance test, high and low temperature test, burst pressure test and ozone aging test, with stable and reliable quality. We accept bulk purchase orders from engineering machinery manufacturers and maintenance parts dealers, providing one-stop cooling system pipeline solutions, supporting customized development of special specifications and special-shaped pipes, with perfect after-sales service and stable long-term supply.