Procuring high-pressure rubber hose involves more than selecting a pressure rating. The hose must match the conveyed medium, installation dimensions, environmental conditions, and applicable standards. This guide, prepared by Hengshui Zhehan Rubber & Plastic Products Co., Ltd., outlines the key checkpoints buyers should verify before placing an order.
1. Identify the Application and Conveyed Medium
High-pressure rubber hose is used for hydraulic oil, compressed air, water, and certain chemical fluids. The inner tube compound must be compatible with the medium. Nitrile rubber (NBR) is standard for mineral hydraulic oil. For acid or alkali fluids, a different compound is required. Using an incompatible tube can cause swelling, hardening, or cracking, leading to leakage or hose failure.
Hengshui Zhehan can customize the inner tube formulation based on the specific medium. The company produces hoses for construction machinery, mining equipment, oil and gas operations, and agricultural machinery.
2. Verify Dimensions, Fittings, and Bend Radius
Confirm the inner diameter, outer diameter, length, and end fitting type before ordering. Incorrect dimensions cause assembly problems and pressure loss. The minimum bend radius must also be respected. Bending a hose tighter than its published minimum bend radius can fatigue the steel reinforcement and reduce service life.
Hengshui Zhehan supplies custom lengths and can crimp metal fittings according to customer drawings or equipment models.
3. Check Construction and Quality Documentation
High-pressure hose typically uses steel wire braid or spiral winding as the reinforcement. The number of wire layers, wire diameter, and braid angle determine pressure capacity and impulse life. Reputable manufacturers perform pressure tests and aging tests. Low-cost hoses may use recycled rubber or insufficient wire layers, which can burst under pressure.
Hengshui Zhehan pressure-tests every batch at 1.5 times the rated working pressure and can provide batch-level inspection records. Hoses are produced with reference to standards such as SAE J517, EN 853, and ISO 6803 test methods, depending on the product type and customer specification.
4. Evaluate Production Capacity, Packaging, and After-Sales Support
For bulk orders, confirm the manufacturer's production capacity, packaging method, and replacement policy. Hengshui Zhehan operates 6 production lines and employs over 120 people, including 18 engineering and quality-control technicians. Products are packed with stretch film and wooden pallets to reduce transport damage. Standard samples are available for evaluation before bulk orders; the customer covers freight.
5. Export and Customization Capability
For overseas buyers, confirm whether the manufacturer can produce to international standards and support export documentation. Hengshui Zhehan has experience supplying export orders and can customize packaging, labeling, and product markings. Technical consultation on hose selection, fitting compatibility, and installation is available.
Summary Checklist
- Medium and inner tube compatibility
- Working pressure, burst pressure, and impulse requirements
- Inner diameter, length, fitting type, and bend radius
- Reinforcement construction and layer count
- Pressure test records and dimensional inspection reports
- Production capacity, lead time, and packaging
- Sample availability and warranty terms
Manufacturer Profile
Hengshui Zhehan Rubber & Plastic Products Co., Ltd. has produced rubber and plastic hose products since June 2018. The factory is located in Jingxian County, Hengshui City, Hebei Province, China. It operates 6 production lines with over 120 employees, including 18 engineering and quality-control technicians. The company performs rubber compounding, wire braiding, cover extrusion, vulcanization, and final pressure testing in-house. Products include high and low pressure hoses, steel wire braided and wound hoses, ultra-high pressure hoses, hydraulic hoses, seals, and related fittings.
For datasheets, pressure rating charts, or custom hose assembly proposals, contact the company with your system parameters: working pressure, fluid type, temperature range, inner diameter, length, and fitting requirements.
Hengshui Zhehan Rubber & Plastic Products Co., Ltd.
Jingxian County, Hengshui City, Hebei Province, China
Website: [company website]
Email: [company email]
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