General Flame-resistance Steel Cord Conveyor Belt – JOYTRANS
FR Belt In Action
HG/T 3973 Certified Production
Steel Cord Conveyor Belt

General Flame-resistance
Steel Cord
Conveyor Belt

The fire-resistant steel cord conveyor belt is widely used in coal washing plants, power stations, and non-coal underground installations — wherever belt ignition presents a catastrophic risk. Rated to HG/T 3973 and available in three fire-resistance grades, it delivers the structural strength of steel cord with the safety assurance your operation demands.

  • Three fire-resistance grades: H · D · L
  • Electrical conductivity ≤ 3 × 10⁸ Ω
  • Afterflame: Not allowed — zero ignition propagation
  • High tensile strength up to 20 MPa (Grade H)
  • Cover separation strength ≥ 12 N/mm
3
Fire Grades
20 MPa
Max Tensile
12 N/mm
Cover Bond
FR/AS
Certified
Application

Safe to Run
Where Fire Cannot

Conventional conveyor belts become a serious liability in environments where heat, sparks, or electrical faults are present. The General Flame-resistance Steel Cord Belt is specifically engineered to suppress ignition and prevent flame propagation, giving operations the time they need to respond — and the protection they cannot afford to be without.

  • Coal washing plants — wet, chemically active environments with ignition risk
  • Power generation facilities — long-distance coal feed conveyors near heat sources
  • Non-coal underground workings — tunnels and sub-surface passages where escape is limited
  • Heavy-duty lump and granulate material transport over long distances
Get a Custom Quote Technical Data Sheet
HG/T
3973
Certified
Product Structure

Five-Layer Construction

The fire-resistant steel cord conveyor belt inherits the same five-layer engineering architecture as the standard steel cord belt, but each rubber compound is specially formulated to resist ignition, slow flame propagation, and maintain structural integrity under thermal stress — without sacrificing the tensile performance operators rely on.

1
Top Cover Rubber
Flame-retardant, anti-static compound. Primary wear surface formulated to resist ignition at the point of material loading and friction contact.
2
Skim Rubber Layer
Bonding interface between top cover and steel cord carcass. Fire-resistant compound prevents inter-layer delamination under thermal loading.
3
Steel Cord Carcass
Galvanized high-tensile steel cords at precise pitch, embedded in fire-resistant rubber matrix for full-width load distribution without compromise.
4
Edge Rubber
Seals cord ends against moisture, chemicals, and mechanical edge wear, maintaining ignition isolation across the full belt cross-section.
5
Bottom Cover Rubber
Anti-static, flame-retardant compound dissipates electrostatic charge safely while resisting abrasion from idlers and return rollers.
FR Steel Cord — Five-Layer Cross-Section

Need a custom cover formulation, specific width, or non-standard cover thickness? Our technical team can configure every layer to match your exact duty conditions.

Request Custom Configuration
BENEFITS
Product Benefits
Why Choose the FR Belt
High Strength
High Strength
Steel cord carcass maintains full structural integrity even when subjected to thermal stress, delivering the tensile strength necessary for long-distance heavy-duty coal transport — without the fire risk of ordinary belts.
Impact Resistance
Impact Resistance
Fire-resistant rubber compounds engineered to withstand high-energy impact at loading points — protecting the steel cord carcass from penetration damage while maintaining the belt's flame-retardant barrier across its entire running surface.
Factory worker lifting and handling heavy duty rubber conveyor belt roll using crane in manufacturing workshop Good Resilience
Good Resilience
Precision vulcanization produces a rubber matrix that recovers its profile after dynamic loading without fatigue cracking — a critical property in flame-resistant applications where cover integrity directly determines fire-suppression performance.
Heavy duty rubber conveyor belt rolls in factory storage area showing large inventory and production capacity Excellent Adhesion
Excellent Adhesion
Cover-to-core separation strength ≥ 12 N/mm ensures the flame-retardant cover layer stays bonded to the carcass under the cyclic thermal and mechanical loads of continuous underground operation — where delamination would expose unprotected cord.
High Abrasion
High Abrasion Resistance
Flame-resistant cover compounds achieve abrasion values of ≤ 120–200 mm³ depending on grade, extending belt life and reducing replacement frequency — which directly lowers the total cost per tonne of material transported over the belt's lifespan.
Flexibility
Good Flexibility & Troughability
Optimised cord pitch geometry enables the FR belt to form a stable trough on standard 20°, 35°, and 45° idler sets, maximising volumetric carrying capacity while maintaining the smooth, low-tension running that reduces heat-generating belt slip events.
Flame Retardant — Afterflame Not Allowed
Anti-Static ≤ 3 × 10⁸ Ω
Cover Bond ≥ 12 N/mm
Technical Data

Main Technical Indicators

Implementation Standard HG/T 3973 《General Use Fire Resistant Steel Cord Conveyor Belt》
Main Technical Indicators
Specification Grade
H D L
Tensile Strength   MPa   ≥ 20 18 15
Elongation at Break   %   ≥ 400 400 350
Abrasion   mm³   ≤ 200 120 200
Tensile Strength & Elongation change rate after aging (70°C × 168h) ±25%
Separation Strength between Cover and Core Rubber   ≥ N/mm 12
Ignition   S   ≤ K2 K3
Aggregate of each set of 6 test pieces (with cover) shall be less than 45s; no individual result shall be greater than 15s. Average duration of each set of 3 test pieces (with cover) shall be less than 60s.
Electrical Conductivity ≤ 3 × 10⁸ Ω
Afterflame Not Allowed

Have a specific belt width, cover thickness, or fire-resistance grade in mind? Receive a factory-direct quotation with confirmed lead time within 24 hours.

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