Industrial Hose

Industrial Hose Product Breakdown by Construction and Pressure Rating

1. Wire Braided Hose

Definition: A hydraulic or high pressure hose with one or two layers of high-tensile steel wire braided around a synthetic rubber inner tube, providing flexibility and moderate pressure resistance.

• Size Range: 1/4 inch to 2 inch ID

• Working Pressure: Up to 6000 psi (depending on layer count and diameter)

• Burst Pressure: 4:1 safety factor (typical), maximum 24,000 psi

• Temperature Range: -40°C to +100°C (-40°F to +212°F) for standard NBR; optional FKM for extreme up to +200°C

• Standards: SAE 100R1, SAE 100R2, EN 853 1SN/2SN

• Impulse Performance: 200,000 cycles minimum per SAE requirements

• Media Compatibility: Mineral oils, hydraulic fluids, diesel fuels, lubricating oils, air, and water

• Min Bend Radius: As low as 3 inches for 1/4 inch ID; 10 inches for 1 inch ID

• Construction:

  • Inner Tube: Smooth NBR (nitrile rubber) – oil-resistant, low fluid friction

  • Reinforcement: One or two layers of high-tensile steel wire braided at optimal 54-degree angle for pressure containment and flexibility

  • Cover: Black CR (chloroprene rubber) – abrasion-resistant, weather-resistant, ozone-resistant

• Applications: Mobile hydraulics, agricultural machinery, construction equipment, industrial power units

• Fittings Compatibility: Crimped fittings, reusable fittings, adapters, flanges

2. Wire Spiral Hose

Definition: A high pressure hose with four or six layers of alternating-direction steel wire spiral reinforcement, engineered for ultra-high pressure, extreme impulse, and heavy-duty hydraulic service.

• Size Range: 1/4 inch to 2 inch ID (up to 3 inches for select types)

• Working Pressure: Up to 6000 psi (4-spiral), up to 10,000 psi (6-spiral)

• Burst Pressure: 4:1 safety factor; burst up to 40,000 psi

• Temperature Range: -40°C to +121°C (-40°F to +250°F)

• Standards: SAE 100R12, SAE 100R13, EN 856 4SP/4SH, ISO 3862

• Impulse Performance: 500,000+ cycles – superior for high-frequency pressure surge applications

• Media Compatibility: Petroleum and water-based hydraulic fluids, synthetic esters, phosphate esters (with FKM tube)

• Min Bend Radius: Larger than braided – e.g., 1 inch ID requires approx 8-10 inches

• Construction:

  • Inner Tube: NBR or FKM (fluorocarbon) for aggressive fluids

  • Reinforcement: Four or six alternating-direction spiral wraps of heavy-gauge steel wire – distributes stress, minimizes elongation, handles extreme impulse

  • Cover: Abrasion-resistant synthetic rubber, pin-pricked for gas permeation relief

• Applications: Mining equipment, offshore drilling rigs, large excavators, forging presses, marine hydraulics

• Fittings Compatibility: Only crimped fittings required for spiral hoses; also adapters, flanges

3. High Pressure Hose (General Category)

Definition: Any industrial hose rated for continuous operation above 3000 psi, including both wire braided and wire spiral constructions, used in demanding hydraulic and fluid power systems.

• Size Range: 3/8 inch to 2 inch ID

• Working Pressure: 3000 psi to 6000+ psi

• Standards: SAE 100R series, EN 853/856, ISO 18752

• Construction Highlights: Heavy-wall NBR inner tube, high-tensile steel reinforcement, synthetic rubber cover with enhanced bonding

• Applications: Hydraulic presses, injection molding machines, heavy lifting gear, wind turbines, marine steering systems

• Service Life: 10+ years when properly stored and operated within limits

4. Rubber Hose (General Purpose)

Definition: A flexible rubber hose without wire reinforcement, typically textile or fiber braid, for low to medium pressure transfer of air, water, mild chemicals, or abrasives.

• Size Range: 1/4 inch to 8 inch ID

• Working Pressure: Up to 500 psi (textile braid); vacuum service down to -29 inHg

• Temperature Range: -30°C to +80°C (standard)

• Standards: ISO 1307, EN ISO 2398 (air), EN 12115 (chemical)

• Construction:

  • Inner Tube: SBR, EPDM, NBR, or natural rubber based on medium

  • Reinforcement: One or more layers of synthetic textile or fiber braid

  • Cover: EPDM or SBR – weather-resistant, flexible

• Applications: Pneumatic tools, water suction and discharge, fertilizer transfer, vacuum trucks, concrete pumping (abrasion-resistant cover)

Detailed Technical Specifications for Industrial Hose Selection

Dimensional Range and Pressure Ratings

HENGHUA manufactures industrial hose from 3mm to 102mm ID (1/8 inch to 4 inches). Working pressures span from full vacuum (29 inHg) to 10,000 psi. Each hose type carries a 4:1 design safety factor (burst pressure = 4 × working pressure), meeting global safety standards.

Material Compatibility and Media Resistance

Choose inner tube material based on fluid chemistry:

• NBR (Nitrile): Mineral oils, diesel, gasoline, hydraulic fluids – standard for 90% of hydraulic systems

• FKM (Viton® equivalent): High-temperature oils, phosphate esters, aggressive chemicals, fuels – up to +200°C

• EPDM: Hot water, steam up to +165°C, brake fluids, dilute acids – not for oils

• PTFE: Almost all chemicals, high-purity media, extreme temperatures -70°C to +260°C

Flexibility and Bend Radius

Minimum bend radius (MBR) directly impacts installation and hose life. Wire braided hose offers 3-5 inches MBR for small diameters; wire spiral hose requires larger radii due to stiffer reinforcement. Exceeding MBR causes kinking, reinforcement failure, and premature burst.

Durability Features

• Abrasion Resistance: Synthetic rubber covers with ≥100 mm³ abrasion loss per ISO 6945

• Weather/Ozone Resistance: CR and EPDM covers resist cracking under UV and ozone exposure

• Corrosion Protection: Galvanized or stainless steel fittings; optional protective sleeves and guards for external abuse

Standards and Certification

HENGHUA industrial hose complies with:

• SAE J517 (100R1, 100R2, 100R12, 100R13)

• ISO 1436, ISO 3862, ISO 18752

• EN 853, EN 856, EN 857

• GB/T (China national standards)

• Certifications: MSHA (mine safety), DNV (marine), ABS, FDA (food contact for specific lines)