Item No.: 3216
HELIUM :
Bronze 1-Piece Cast Wheels by Konig®.
Main Line Wheels are built upon the most forward styling and an uncompromising level of quality.
Durability, and performance that hardcore tuning and speed junkies have grown to expect from Konig.
Blending refi
| COVER GRADE | ||||
| FR‑1 | FR‑2 | FR‑3 | FR‑4 | |
| Service Condition | Under‑ground general risk | High‑risk underground | Surface high‑risk | Tunnel & extreme risk |
| Normal Range | -20°C~+70°C | -20°C~+70°C | -20°C~+70°C | -20°C~+70°C |
| Temperature × Duration | 70°C × 168Hrs | 70°C × 168Hrs | 70°C × 168Hrs | 70°C × 96Hrs |
| Tensile Strength (N/mm²) | ||||
| Variation in percentage of initial value | -20 | -20 | -25 | -25 |
| Minimum value after aging | 17 | 17 | 15 | 15 |
| Elongation at break (%) | ||||
| Variation in percentage of initial value | -25 | -25 | -30 | -30 |
| Minimum value after aging | 350 | 350 | 300 | 300 |
| Hardness (IRHD) | ||||
| Difference before and after aging | ±15 | ±15 | ±18 | ±18 |
| Maximum value after aging | 80 | 80 | 82 | 82 |
Product Features
Fire hazards represent a critical threat within enclosed production and material conveying facilities as well as underground mining operations. Our flame retardant conveyor belt mitigates such fire risks, extending the reaction window for on‑site fire suppression systems to activate. It restrains flame spread and delivers reliable anti‑static performance for high‑risk industrial conveying scenarios.
FR‑1: -20°C ~ 70°C
FR‑2: -20°C ~ 70°C
FR‑3: -20°C ~ 70°C
FR‑4: -20°C ~ 70°C
Underground & Surface Mining, Tunnel Material Handling, Thermal Power Stations, Chemical Processing Plants, Grain Milling & Processing.
- Material type, lump shape and particle size
- Required flame‑retardant grade & local safety standard requirements
- Conveyor operating speed
- Total conveying distance & tension load
- Drop height and impact level of feeding material
- Ambient working environment (underground / tunnel / surface)
Standard flame resistant belts are not suitable for the below working conditions. Contact our team for customized rubber compound alternatives.
- Long‑term continuous high‑temperature hot material conveying
- Conveying materials with strong acid or alkaline properties
- Transporting oily materials or grease‑contaminated bulk solids
- Severe chemical corrosive surroundings

Professional Manufacturer
Specialize in R&D & production of EP, Steel Cord, Solid Woven flame‑resistant conveyor belts.

Wide Industry Coverage
Serve mining, tunnel, power, chemical and grain industries for global customers.

Custom Technical Support
Provide belt selection, safety‑grade consulting, calculation, drawings and on‑site service for underground & tunnel conditions.

Rigorous Quality Control
Full‑process inspection & batch lab flame‑retardant testing; test reports available.

Solid R&D Strength
Joint‑research with institutes to develop belts for underground high‑fire‑risk working conditions.

One‑stop Service
Complete supply, technical after‑sales and full‑export‑process support for safety‑critical conveyor projects.



Contact: Howie Song
Phone: +86-18205868681
E-mail: info@sunyconveyor.com
Whatsapp:8618205868681
Add: Rubber Valley Mansion, No.7, Wuyang Road, Shibei District, 266045, Qingdao, China.