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China Heat-Resistant Rubber Conveyor Belt Suppliers | Factory Direct Quality & Durability
Heat resistant conveyor belts are essential for various industries, and they come in two main types: ordinary heat resistant conveyor belts and strong heat resistant conveyor belts. The ordinary type features a strong layer made of polyester cotton canvas (CC56), while the strong type boasts an enhanced EP strong layer, available in different specifications such as EP100, EP150, EP200, EP250, EP300, EP350, EP400, EP450, and EP500. As a leading manufacturer in China, our factory specializes in producing high-quality conveyor belts that meet diverse industry needs. We are proud to be recognized among top suppliers in the market, ensuring reliability and durability in every product
Mainly used in industries such as metallurgy and construction to transport high-temperature materials including sintered ore, coke, and cement clinker. Material temperature should not exceed 800 °C, and surface temperature should not exceed 220 °C.
Features: The cover layer is made of EPDM rubber, and the skeleton material is made of domestically used high-temperature resistant canvas. The unique formula design solves the key problems of high saturation, poor adhesion, and low interlayer adhesion of EPDM rubber. It has the characteristics of light weight, long lifespan (about 2–4 times), and good heat resistance.
Implementing the standard of "General purpose fabric core conveyor belts with rubber or plastic covering", this standard adopts the international standard draft ISO/FDIS 14890-1999.
A heat-resistant conveyor belt is made of multiple layers of rubber cotton canvas (polyester cotton cloth) or polyester canvas covered with high-temperature resistant or heat-resistant rubber, bonded together by high-temperature vulcanization, suitable for transporting hot coke, cement, slag, and hot castings below 175 °C.
The specifications are the same as ordinary conveyor belts.
The product complies with HG2297-92 standard.
Heat resistant conveyor belts can be divided into four types:
Type
Max Test Temperature
Max Short-term Operating Temp
Code
Type I
100 °C
150 °C
T1
Type II
125 °C
170 °C
T2
Type III
150 °C
200 °C
T3
Type IV
175 °C
250 °C
T4
Physical Properties
Strength Aging Difference
Difference between Strength Aging and Pre Aging (IRHD): 23
Max Value After Aging
Maximum value after aging (IRHD): 88
Tensile Strength Change Rate
Decreased rate of change in tensile strength performance: 40%
Lowest Value After Aging
Lowest value after aging: 5 MPa
Tensile Strength Performance
Change rate of tensile strength performance: 60%
Minimum Value After Aging
Minimum value after aging: 150%
High temperature resistant steel mesh conveyor belt is made of steel wires woven vertically and horizontally. The surface of the steel mesh is galvanized or copper plated, and the lower surface is covered with a rubber layer. During transportation of high-temperature materials, the overall surface does not peel off — its performance is more reliable than layered heat-resistant conveyor belts.
A heat-resistant conveyor belt is made of multiple layers of rubber cotton canvas (polyester cotton cloth) covered with high-temperature resistant or heat-resistant rubber, bonded together by high-temperature vulcanization, suitable for transporting hot coke, cement, slag, and hot castings below 240 °C.
The specifications are the same as ordinary conveyor belts.
The product complies with HG2297-92 and GB/T20021-2005 standards.
Heat resistant conveyor belts can be divided into five types:
Type
Max Test Temperature
Max Short-term Operating Temp
Code
Type I
100 °C
150 °C
T1
Type II
125 °C
170 °C
T2
Type III
150 °C
200 °C
T3
Type IV
175 °C
400 °C
T4
Type V
240 °C
600 °C
T5
Key Features
This conveyor belt is mainly used in metallurgy, building materials, casting, coking, and chemical engineering industries to transport high-temperature solid materials such as sintered ore, coke, cement, and fertilizers with specified heat resistance performance.
The heat resistance and service life of heat-resistant conveyor belts mainly depend on the heat resistance of the covering layer and the belt core. Rubbers with good heat resistance — such as styrene butadiene rubber, butyl rubber, and ethylene propylene rubber — are used as the main rubber material. Polyester cotton and polyester canvas with heat resistance and low heat shrinkage are used as the core.
Heat resistant conveyor belts are divided into four levels according to different test temperatures:
T1 Test temperature that can withstand heat not exceeding 100 °C
T2 Test temperature that can withstand heat not exceeding 125 °C
T3 Can withstand a test temperature not exceeding 150 °C
T4 Can withstand a test temperature of no more than 175 °C
Tape Marking Example: 200 1200 EP 5 1000 8+3 T2 — indicates a tape with a length of 200 m, width of 1200 mm, core of EP canvas with 5 layers, strength specification of 1000 N/mm, and upper/lower cover layer thicknesses of 8 mm and 3 mm respectively. The cover layer can withstand a test temperature of no more than 125 °C. Complies with national standard GB/T 20021-2005 "Canvas Heat-resistant Conveyor Belt".
To meet higher operating temperatures, some manufacturers have developed heat-resistant conveyor belts capable of withstanding higher temperature levels and high-temperature conveyor belts that resist burning. Generally, flame retardant insulation agents, anti-ablation agents, and thermal conductivity agents are added to the cover layer rubber to improve high-temperature and anti-ablation properties.
Frequently Asked Questions
What is the maximum operating temperature for a heat-resistant conveyor belt?
The maximum operating temperature depends on the type. Standard types range from T1 (max 150 °C short-term) up to T5 (max 600 °C short-term). For EPDM rubber-covered belts, the material temperature should not exceed 800 °C and the surface temperature should not exceed 220 °C.
What industries are heat-resistant conveyor belts used in?
Heat-resistant conveyor belts are widely used in metallurgy, building materials, casting, coking, construction, and chemical engineering industries. They are suitable for transporting hot materials such as sintered ore, coke, cement clinker, slag, fertilizers, and hot castings.
What materials are used to make heat-resistant conveyor belts?
The cover layer is typically made of heat-resistant rubbers such as EPDM (ethylene propylene rubber), styrene butadiene rubber, or butyl rubber. The belt core uses polyester cotton canvas or polyester canvas with high heat resistance and low heat shrinkage properties.
What standards do heat-resistant conveyor belts comply with?
Heat-resistant conveyor belts comply with multiple standards including HG2297-92, GB/T20021-2005 ("Canvas Heat-resistant Conveyor Belt"), and the international standard draft ISO/FDIS 14890-1999 for general purpose fabric core conveyor belts.
How do heat-resistant conveyor belts compare to ordinary conveyor belts in terms of specifications?
The strength and width specifications of heat-resistant conveyor belts are the same as those of ordinary conveyor belts. However, heat-resistant belts use specially formulated rubber compounds and reinforced canvas cores to withstand elevated operating temperatures, offering a lifespan approximately 2 to 4 times longer than standard belts.
What is the advantage of a high-temperature resistant steel mesh conveyor belt?
High-temperature resistant steel mesh conveyor belts are made of vertically and horizontally woven steel wires, with surfaces that are galvanized or copper plated, and covered with a rubber layer underneath. During transportation of high-temperature materials, the overall surface does not peel off, making them more reliable than layered heat-resistant conveyor belts. They are suitable for materials up to 240 °C.
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