Premium grade steel-cord and textile reinforced belts engineered to withstand severe vertical lifts, impact, and extreme temperature fluctuations typical of Alpine quarry sites.
Switzerland's unique geography calls for specialized bulk material handling solutions. Whether transporting aggregate in the deep underground caverns of the Valais region, feeding cement processing plants in St. Gallen, or operating horizontal underground networks for urban projects like Cargo Sous Terrain, system operators face unmatched physical challenges.
Regular textile belts fail under these conditions due to excessive elongation, splice breakdowns under high tension, and localized tearing from jagged quartz-rich granite. Hebei Boao Rubber's **Jinao Brand** Steel Wire Rope Core Conveyor Belts solve this problem by incorporating open-structure, zinc-galvanized high-carbon steel cords. These cords allow complete rubber penetration, locking the internal cables against moisture ingress and subsequent corrosion—ensuring structural integrity in tunnels and freezing mountain environments.
Years Engineering Experience
Acres Production Campus
Max Tensile Core Capability
Maximum Long-term Elongation
A technical guide to selecting the appropriate rubber cover compounds for Swiss aggregates, chemical processing, and mining industries.
| Cover Grade (DIN 22131 / ISO 15236) | Tensile Strength (Min. MPa) | Elongation at Break (Min. %) | Abrasion Loss (Max. mm³) | Primary Target Applications in Switzerland |
|---|---|---|---|---|
| Grade X (Heavy Duty Impact) | 25 MPa | 450% | 120 mm³ | Primary Alpine granite crushing facilities, limestone quarries, high fall-height drops. |
| Grade W (Premium Wear Resistant) | 18 MPa | 400% | 90 mm³ | Highly abrasive sand and gravel sorting lines, silica transport, quartz aggregate paths. |
| Grade Y (General Purpose Industrial) | 20 MPa | 400% | 150 mm³ | Cement packaging lines, clinker storage feeding, overland waste-to-energy routes. |
| Flame Retardant (DIN EN ISO 340 / ATEX) | 20 MPa | 350% | 150 mm³ | Underground tunneling excavation (e.g., Swiss AlpTransit tunnels), closed gallery transport. |
| Cold Resistant (Down to -50°C) | 18 MPa | 400% | 140 mm³ | Glacier-proximate aggregate processing, exposed high-elevation cableway conveyors. |
For operators running high-lift operations, the greatest financial risk is a longitudinal belt rip. If a piece of tramp metal or sharp basalt pierces the cover rubber, it can wedge against the support frame and split standard belts along their length in minutes.
Our **Anti-Tear Steel Wire Rope Core Belts** feature high-tensile steel cord structures configured with transverse reinforcement. We insert specialized brass-coated or galvanized steel breaker cords above the main steel warp cables. This acts as a physical barrier: when a sharp object pierces the cover, the object strikes the cross-breaker, stopping the tear immediately.
Every internal steel cable is hot-dip galvanized. This chemical bond protects against moisture and prevents core oxidation, even if the outer rubber cover is punctured.
Using open-twist cord configurations (e.g., 7x7 or 7x19 construction) allows the unvulcanized core rubber to flow completely into the center of the steel cords during vulcanization, optimizing adhesion values.
Our tight tolerance control on cord pitch and step dimensions ensures dynamic splice efficiency of up to 100% of the belt design strength when following ISO 15236-4 splicing procedures.
How we are preparing Switzerland’s quarry and processing networks for automated, sensor-driven preventive maintenance cycles.
Deploying copper loop inductive coils embedded between the steel core cords and bottom cover. Real-time sensor receiver stations on head/tail pulleys immediately cut system power when a loop is severed, preventing catastrophic splits.
Implementing continuous magnetic flux scanner arrays along the conveyor structure. These scanners profile the steel cords, locating hidden breaks, wire corrosion, and splice degradation without interrupting operations.
Introducing LRR base-layer compounds designed to decrease viscoelastic loss as the belt rides over idlers. This technology cuts running energy costs by 15-25%, supporting Swiss energy-conservation mandates.
Developing next-gen compounds using devulcanized rubber without degrading mechanical tensile limits. Perfect for Swiss green infrastructure projects demanding audited low-carbon footprints.
Hebei Boao Rubber Technology Co., Ltd. leverages the raw-material and engineering efficiency of Boye County’s Rubber Industrial Park, combining advanced manufacturing with global logistics standards. Since 2004, our specialized brand, Jinao, has delivered industrial-grade products to clients worldwide.
We operate modern internal labs to monitor every production step—from raw synthetic polymer analysis and dynamic carbon black mixing to final tensile strength tests of the galvanized steel wires. Our products are backed by ISO 9001 quality certificates and environmental management credentials.
For European deliveries, our team handles all stages of international logistics. We offer multimodal shipping options via sea-rail corridors directly into Swiss destinations like Basel, Zurich, and Geneva, coordinating Swiss customs clearance documents for smooth port entry.
Explore real-world applications where Jinao industrial belts deliver reliability under challenging operational conditions.
From heat-resistant rubber to specialized rollers, dynamic brackets, and anti-tear steel-cord profiles, our plant manufactures complete logistics equipment tailored to your needs.
At Hebei Boao Rubber Technology, we support Swiss engineering partners long after purchase. We provide custom site calculations, design layout templates, step-by-step splice procedures, and cold-vulcanizing chemicals to ensure smooth installations.
We maintain safety stocks at our partner warehouses for key clients, helping reduce the threat of unplanned shutdowns. Our engineers can also optimize your conveyor systems remotely, advising on adjustments to idler spacing, transitions, and drive tension to prevent tracking issues.
Get Technical Support ProgramGet answers to common technical, installation, and shipping questions about our industrial systems.
The choice depends on your installation's pulley diameters and flexibility requirements. The 7x7 steel cord design is highly stable, makes excellent contact with idlers, and works well for long, straight overland systems. The 7x19 configuration is more flexible and is suited for tighter pulley curves, high-troughing systems, and applications using heavy anti-tear transverse reinforcements.
We protect the core wires by hot-dip galvanizing every cord with zinc before rubber vulcanization. Additionally, we formulate our core rubber compound to optimize adhesive bonding, which prevents moisture from traveling along the wires even if the outer cover is cut.
Yes. All our steel-cord conveyor belts are manufactured in line with DIN 22131 and ISO 15236 standards. This ensures they can easily replace European OEM conveyor parts without requiring adjustments to your structural frame or pulley profiles.
With proper tensioning and idler alignment, Jinao Grade X or Grade W cover-compound belts typically last between 8 to 12 years in granite quarries. This is up to three times longer than standard multi-ply textile belts working under identical structural load settings.
We handle the entire transport chain. We ship under terms like CIF or DDU/DDP, routing products through ports like Rotterdam or Hamburg before transporting them via rail or barge directly to Swiss cargo centers. We also coordinate customs clearance to ensure simple local delivery.
For ST2500 grade belts, we recommend using a hot-vulcanized three-stage splice profile that aligns with DIN 22131-4 requirements. We supply complete splice kits with every order, including matching tie-gum, unvulcanized cover rubber, and specialized vulcanizing solution.
Yes. We supply certified flame-retardant belts that meet ISO 340 and EN 12882 safety criteria. These are designed specifically to minimize combustion risks in underground mining and tunneling projects.
Send us your conveyor specifications, system lengths, vertical lifts, and material profiles. Our engineers will provide a detailed quote and custom belt design proposal within 24 hours.
Boao Rubber
