China Rubber Belts Manufacturer & Factory

Global Industrial Grade Heavy-Duty Conveyor Solutions Powered by Hebei Boao Rubber Technology Co., Ltd. - Jinao® Brand

22+ Years of Industrial Grade Belt Manufacturing Leadership

Founded in 2004, Hebei Boao Rubber Technology Co., Ltd. (operating the premier industrial brand Jinao®) occupies a massive state-of-the-art 30-acre facility in the Boye County Rubber Industrial Park, Baoding, Hebei Province, China. We are an integrated global provider encompassing primary research & development, customized engineering design, chemical compounding, vulcanization, and worldwide after-sales deployment.

Our operation is structurally verified under international quality protocols, running highly automated calenders, high-pressure continuous press lines, and dedicated material laboratories. Our engineering core specializes in manufacturing high-strength textile reinforced belts (EP/NN/Polyester-Nylon), steel cord systems, and custom multi-layered specialty profiles designed to eliminate industrial downtime.

22+
Years Industry Presence
30+
Acre Production Base
100%
ISO Checked Quality
Hebei Boao Rubber Factory Production Floor

Global Heavy Industry Bulk Sourcing Demands

Heavy-duty bulk handling environments demand conveyor systems with zero-fault margins. We build high-performance systems engineered specifically for key global market challenges.

Steel & Metallurgy Mills

Capable of conveying sinter, coke, and slag at contact temperatures spikes exceeding 250°C. We compound premium EPDM and heat-resistant covers to prevent premature cover hardening, surface cracking, and ply separation.

Deep Coal & Mining Operations

Underground safety requires specialized flame-retardant (MSHA/DIN compliant) compounds that self-extinguish. Our anti-tear steel cord designs protect against longitudinal slitting caused by trapped tramp metal.

Ports, Terminals & Power Generation

High-volume bulk handling lines require high belt speeds and low rolling resistance. We optimize bottom cover rubber properties to dramatically lower energy draw over long-distance conveyor runs.

Technical Specification Reference Matrix

Jinao® brand belts are engineered to match or exceed rigorous DIN 22102, ISO, AS, and RMA standards.

Belt Type Reinforcement Core Tensile Strength (N/mm) Cover Properties (DIN 22102) Primary Application Context
EP (Polyester/Nylon) Polyester Warp / Nylon Weft 100 - 630 N/mm per ply Grade X, Y, W, Z Medium-long distance quarrying, sand, aggregates, and mining
NN (Nylon/Nylon) Nylon Warp / Nylon Weft 100 - 800 N/mm per ply High Elasticity, Shock Resistant Heavy impact environments, crushing lines, log handling
Steel Cord (ST) Zinc-Coated Steel Wire Rope ST630 - ST5400 ISO 15236, Anti-Tear/Abrasion Long overland paths, deep pit coal mining, port loadouts
Heat-Resistant (HR) EP / Steel Cord Core 200 - 3150 N/mm T150, T200, T250 (EPDM/SBR) Coke plants, cement clinker lines, chemical fertilizer plants
Chemical/Acid Resistant Synthesized EP Fabric 100 - 500 N/mm per ply Neoprene/EPR specialized compound Phosphate processing, seawater installations, pulp paper mills

Technology & Advanced Manufacturing Roadmap

Our raw rubber compound processing to structural vulcanization is monitored continuously by automated thickness gauges and laser tracking systems.

01

Precise Dosing

Raw natural and synthetic rubbers are batched in our automated carbon black mixing center to ensure consistency.

02

Precision Calendering

High-precision 4-roll calenders apply uniform rubber coats onto textile plies or steel wire arrays.

03

Continuous Curing

High-pressure flat vulcanizers run closely monitored cure cycles to lock in cover adhesion and elasticity.

04

Destructive Testing

Each batch undergoes DIN abrasion test, steel cord pull-out testing, and dynamic fatigue checks in our laboratory.

Advanced Production Lines & Testing Laboratory

From the mixing center to the final test bench, Hebei Boao Rubber Technology guarantees raw material purity and product durability.

Production Line of Fabric Conveyor Belt
Fabric Conveyor Belt Production Line
Production Equipment of Steel Cord Conveyor Belt
Steel Cord Belt Production System
Proportioning Room of Mixing Center
Mixing Center Proportioning Room
Proportioning System of Mixing Center
Mixing Center Automated Dosing
Feeding Device
Calender Raw Material Feeder
Calendering & Shaping Machine
4-Roll Calendering & Fabric Shaping
Peeling Test
Interply Adhesion Peeling Test
Steel Cord Pull-out Machine
Steel Cord Pull-Out Adhesion Tester
Dynamic Fatigue Tester
Conveyor Belt Dynamic Fatigue Tester
Abrasion Tester
DIN Abrasion & Volume Loss Tester
Physical Properties Testing
Universal Physical Property Tester
Raw Elastomer Properties Test
Raw Elastomer Rheological Test

Certified Safety & Management Systems

Our manufacturing plant operates under strict adherence to ISO international guidelines, including API 6D, API 607, CE, ISO 9001, ISO 14001, and ISO 45001.

ISO Quality Certificate 1
ISO Quality Certificate 2
ISO Quality Certificate 3
ISO Quality Certificate 4
ISO Quality Certificate 5

Global Project Deployments & Case Studies

Jinao® brand belts are engineered to perform in demanding, high-throughput applications worldwide.

China Railway Group Mixing Plant

China Railway Group Mixing Plant

Conch Cement

Conch Cement Group

Datong Coal Group

Datong Coal Group

Tsingshan Group

Tsingshan Group (Stainless Steel)

Jidong Cement Group

Jidong Cement Group

Jinmei Group Coal Conveying Line

Jinmei Group Coal Conveying Line

Taihang Steel

Taihang Steel Smelting Plant

Puyang Steel Group

Puyang Steel Group

Professional Technical & Field Support Plans

We provide full-lifecycle support, from belt design and selection to splicing, monitoring, and structural maintenance.

Conveyor Lifecycle Management

We provide scheduled replacement plans, wear rate modeling, physical inspections, and rapid mobilization for emergency belt repairs.

Splicing & Installation Services

Our team calculates the proper step length and curing profiles for hot vulcanized or cold bonded splicing on site, ensuring up to 90%+ joint efficiency.

System Optimization

We analyze material path dynamics and wear patterns to recommend target compounds, reducing dust and mechanical strain on idlers.

Technical FAQ & Purchasing Knowledge Base

Technical guidance for global procurement officers, plant managers, and belt conveyor system designers.

Q1: What is the main structural difference between EP and NN rubber conveyor belts?
EP (Polyester/Nylon) belts feature polyester cords in the longitudinal direction (warp) and nylon cords in the transverse direction (weft). This construction offers lower elongation under load, making EP belts ideal for long-distance conveyor layouts. NN (Nylon/Nylon) belts use nylon cords in both directions, providing higher elasticity, excellent impact resistance, and superior flexibility. They are best suited for short-center, high-impact systems like primary crushing runouts.
Q2: How do you choose the proper heat-resistant grade (T150 vs T200 vs T250)?
Choosing the right grade depends on the constant temperature of the material and peak thermal spikes. The T150 grade (often SBR-based) handles continuous material temperatures up to 120°C with peaks at 150°C. T200 uses specialized EPDM to withstand continuous temperatures of 150°C and spikes up to 200°C. For extreme clinker or sintering applications, T250 uses high-grade EPDM compounds to handle continuous operation at 180°C and spikes up to 250°C.
Q3: What causes steel cord belt cover delamination, and how does Boao prevent it?
Cover delamination occurs when raw rubber fails to bond securely with the brass-plated steel cords. This is often caused by humidity during assembly or inadequate vulcanization pressure. Hebei Boao prevents this by using specialized zinc-coated steel cords and applying high-bond adhesive rubber compounds under high pressure. This creates a chemical bond between the steel and rubber plies, exceeding ISO 15236 adhesion standards.
Q4: What parameters are required to generate an accurate technical quote for custom rubber belts?
To provide an accurate technical quote, we need the belt width (mm), structural carcass type (EP, NN, or Steel Cord), total tensile strength rating (e.g., EP400 or ST2000), number of plies, top and bottom cover rubber thicknesses (e.g., 6mm + 2mm), cover rubber grade (e.g., DIN X or Y), and the specific type of material being conveyed.
Q5: How do Jinao® products comply with international environmental and occupational standards?
Our manufacturing facility operates in compliance with ISO 14001 (Environmental Management System) and ISO 45001 (Occupational Health & Safety). We use eco-friendly vulcanizing agents, minimize emissions in our mixing center, and source raw materials that comply with REACH and RoHS standards for international markets.

Request a Technical Consultation & Custom Belt Spec Sheet

Get in touch with our application engineers for a custom belt recommendation, project pricing, or raw material test certificates.

Contact Our Engineers Now