Custom High Tensile Steel Cord Rubber Conveyor Belt

Product Overview

AstraRoll’s Custom High Tensile Steel Cord Rubber Conveyor Belt is engineered for long-distance, large-capacity and high-speed bulk material transport in mining, ports, power plants, steel mills and cement plants—applications where multi-ply fabric belts reach their tension and elongation limits.

The belt carcass consists of longitudinally arranged zinc-coated steel cords embedded in a high-adhesion core rubber compound. The cords are the sole load-bearing element; the rubber compound bonds them into a single structural unit. Top and bottom cover rubber layers protect the cords from abrasion, impact and environmental exposure. Because the steel cords carry the full tension, the belt operates with very low working elongation under load, requiring a shorter take-up stroke and permitting smaller drive pulley diameters than equivalent fabric belts.

The cover compound is selected according to the application. Standard grades offer abrasion resistance for hard rock and aggregate. Flame-resistant grades are available for underground coal mining, formulated to meet fire safety requirements for belts in hazardous atmospheres. Heat-resistant and oil-resistant grades are available for cement, steel and specialized industrial lines. An optional transverse reinforcing layer—steel cord or high-tenacity fabric—can be integrated to resist longitudinal tearing caused by sharp foreign objects, and to prevent broken cords from protruding.

Technical Parameter

• Product Name: Custom High Tensile Steel Cord Rubber Conveyor Belt
• Carcass Type: Longitudinal Zinc-Coated Steel Cord
• Steel Cord Construction: K6×7 / K7×7 / K7×19 (Depending on tensile grade)
• Tensile Strength Grades: ST630 / ST800 / ST1000 / ST1250 / ST1600 / ST2000 / ST2500 / ST3150 / ST3500 / ST4000 / ST4500 / ST5000 / ST5400 (Customizable)
• Belt Width: 600mm – 3000mm (Customizable)
• Top Cover Thickness: 4mm – 9mm (Depending on Tensile Grade)
• Bottom Cover Thickness: 4mm – 9mm (Depending on Tensile Grade)
• Cord Diameter: 2.5mm – 11.3mm (Depending on Tensile Grade)
• Cord Pitch: 10mm – 17mm (Depending on Tensile Grade)
• Cover Rubber Grade: Abrasion-Resistant (Standard) / Flame-Resistant / Heat-Resistant / Oil-Resistant (Optional)
• Adhesion Between Rubber and Steel Cord: High, Zinc-Coated Cord Surface
• Elongation at Working Load: ≤0.25% (Typical for Steel Cord Carcass)
• Working Temperature: -30°C to +80°C (Standard); Higher with Heat-Resistant Compound
• Standard: DIN 22131 / EN ISO 15236-1 / GB/T 9770
• Flame Resistance Standard (Optional): DIN EN ISO 15236-3 / EN 14973 (Underground Coal Mining)
• Certification: ISO 9001

Application Industrial

Mining & Quarrying: Long-distance transport of ore, hard rock and minerals where fabric belts cannot sustain the required tension.

Underground Coal Mining: Flame-resistant steel cord belts for coal conveyance in hazardous atmospheres requiring fire and explosion safety.

Ports & Terminals: High-capacity loading and unloading of bulk vessels and stockpile transfer.

Power Plants: Coal and biomass feeding lines, including boiler feed and ash handling.

Steel Mills & Cement Plants: Transport of sinter, coke, clinker and raw materials at high temperatures.

Tunnelling & Heavy Civil Engineering: Muck removal and bulk material transport over long distances.

Why Choose AstraRoll’s Custom High Tensile Steel Cord Rubber Conveyor Belt?

High Tensile Strength with Low Working Elongation: Steel cord construction provides tensile grades from ST630 to ST5400 N/mm with low working elongation under load. The short take-up stroke reduces maintenance and allows smaller drive pulley diameters than equivalent fabric belts.

Zinc-Coated Cords with High Adhesion: Zinc-coated steel cords and a high-adhesion core compound ensure strong bonding and resistance to cord pull-out under repeated flexing and impact.

Application-Specific Cover Compounds: Abrasion-resistant, flame-resistant, heat-resistant and oil-resistant cover grades are available. Flame-resistant belts are formulated for underground coal mining and other fire-hazard environments.

Optional Anti-Tear Reinforcement: A transverse reinforcing layer—steel cord or high-tenacity fabric—can be integrated to resist longitudinal tearing from sharp foreign objects and to prevent broken cords from protruding.

Customizable Configuration: Tensile grade, belt width, cover thickness, cord diameter, cord pitch, cover compound and anti-tear layer are fully customizable to match specific conveyor systems and material characteristics.

Factory-Direct Supply & Long-Term Support: AstraRoll supplies conveyor belts factory-direct, supporting small-batch trials and large-scale production with stable quality and competitive pricing. Complete conveyor systems, including idler rollers, drive pulleys, bend pulleys, and take-up pulleys, are also available.

Q1. Are you a trader or direct factory?

We are a direct manufacturing factory with over 20 years of expertise in high-end industrial rollers, casters and material handling solutions. Our facility operates with ISO-certified quality management systems, allowing us to maintain full control over production cycles and quality standards. Throughout two decades of growth, we have established deep, long-term strategic partnerships with several listed companies and global automation leaders, proving our reliability as a high-tier industrial supplier.

Q2. What are your main products?

AstraRoll specializes in the engineering and production of three core product lines: Industrial Rollers, Heavy-Duty Wheels, and Precision Casters. We do not just sell components; we provide integrated movement and transport solutions. Our products are widely utilized across high-demand sectors, including: New Energy, Lithium Battery, Mining, Heavy Industry, Medical Institutional, Agriculture and Logistics.

Q3. What about delivery time?

We deeply understand that project timelines are critical.
Standard Products: Usually dispatched within 7–15 working days if the components are in stock.
Customized/OEM Orders: Depending on the complexity and volume, the lead time typically ranges from 20–35 days. This includes time for technical drawing confirmation, specialized tooling, and rigorous pre-shipment testing.
Shipping Methods: We offer flexible global logistics solutions, including FOB and CIF terms. We ship via Sea Freight (for bulk industrial orders), Air Freight (for urgent project needs), and International Express (DHL/FedEx/TNT) for smaller components or samples.

Q4. How can I get a quote for customized products?

Since a significant portion of our business involves specialized engineering, pricing is tailored to your specific technical requirements. To provide an accurate quote, please provide the following details: Technical Drawings or Sketches, Application Environment, Quantity, Special Requests. Our engineering team typically reviews and responds to custom inquiries with a formal quotation within 24–48 hours.

Q5. What is your payment?

TT / Paypal / Western Union / LC / Credit Card etc. are all available to us.