How to Get a Heat-Resistant Conveyor Belt Quote
To start a preliminary heat-resistant conveyor belt quote, send four basic details: belt length, width, finished thickness, and temperature condition. Describe the temperature carefully: say what was measured, where, and for how long, because a belt’s heat grade rates the cover, not the material it carries.
The supplier will then review the conveyed material and actual operating conditions. This review helps determine the heat-resistant compound, carcass, strength, cover construction, and whether the belt should be spliced in the factory.
Send These Four Details First
Start with the dimensions you know and a clear description of the temperature. Use millimeters for width and thickness, and meters for total length.
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| Detail | What to send | Example format | Why it matters |
|---|---|---|---|
| Belt length | Total belt length or roll length and number of rolls | 120 m total |
Establishes the required belt quantity and production scope |
| Belt width | Finished belt width | 1,000 mm |
Affects construction, material use, and compatibility with the conveyor |
| Finished thickness | Overall finished belt thickness | 14 mm |
Gives the supplier a starting point for the cover and carcass review |
| Temperature condition | Normal temperature, short peak, and what each value describes | 150°C normal material temperature; 180°C short peak |
Guides the heat-resistant compound and construction review |
Important: Overall thickness is only a starting reference. Final confirmation may also require top cover thickness, bottom cover thickness, carcass type, and strength rating.
If one field is unknown, do not guess. Write Unknown — supplier to recommend and send an old belt marking, specification sheet, drawing, or clear photos when available.
These four details can start a preliminary quotation. They do not replace the final technical specification required before production.
Describe the Temperature, Not Just One Number
A useful inquiry explains what each temperature value means. The temperature of the conveyed material is not always the same as the belt-surface temperature, and several conditions decide how much of that heat actually reaches the cover.
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| Condition | How it changes the heat on the belt | What to tell the supplier |
|---|---|---|
| Particle size | Fines lie flat on the cover and transfer heat well; large lumps touch it at fewer points but can create hot spots. | Lumps, fines, or a mix, and the largest lump size |
| Layer depth and buildup | A deep layer or fines piling up in one place trap heat against the cover. | Typical load depth and whether material builds up |
| Contact time | Belt speed and conveyor length decide how long hot material sits on the cover. | Belt speed and conveyor length |
| Cooling | The return run, ambient air, and any cooling before loading lower the belt temperature between loads. | Ambient temperature and any material cooling before the belt |
| Peaks | A short peak heats the cover less than the same temperature held continuously. | Peak temperature and roughly how long it lasts |
Send when available
- Normal continuous material temperature
- Short peak temperature and its approximate duration
- Measured belt-surface temperature
- Temperature measurement point: before loading, at the loading point, or on the belt surface after contact
- Conveyed material name
- Particle size, especially when large hot lumps contact the belt
Why this matters
Contact time also matters. Belt speed, conveyor length, loading depth, and cooling conditions can change the heat transferred to the belt.
Do not describe one temperature value as a guaranteed belt limit. The value should be reviewed together with the complete operating condition.
Cement clinker shows why fines matter. Hot fines pile up, hold heat against the cover, harden it, and crack it. Read more on belt choices along a cement plant conveyor line, from quarry to packing.
What Temperature Can a Heat-Resistant Conveyor Belt Handle?
It depends on which temperature you mean. Heat-resistance grades such as T1, T2, T3, and T4 rate the belt cover, and the belt surface normally runs cooler than the material on it. A belt can therefore carry material hotter than its grade, as long as contact time, particle size, and cooling keep the cover within its rating.
A T-grade is a belt rating, not the temperature of your material. Heat-resistance standards based on ISO 4195 say the same thing: a belt’s heat class is not the temperature of the product being carried, and is usually lower, because the belt cools on the return run and a short contact does not bring the belt up to the material’s temperature.
The same standards also treat lumps and fines differently. For each grade, the guideline material temperature for fines is lower than for lumps, because fine material lies flat on the cover and passes heat into it much more effectively.
For Hongkun’s T1 to T4 reference temperatures and material temperature ranges, see the heat-resistant conveyor belt grades and temperature ranges. Every grade reference still has to be confirmed against the actual belt-surface temperature and full operating condition.
How to Read an “Up to 800°C” Claim
Heat-resistant belt pages, including Hongkun’s, often list material temperatures such as 300°C for continuous hot material, 800°C for short peaks, or 1,000°C for isolated hot lumps. These figures describe the material under specific conveying conditions. They are not temperatures the rubber cover runs at.
A large number is only useful when you know the conditions behind it. Before comparing two suppliers on a temperature figure, ask:
- Is this the material temperature or the belt-surface temperature?
- Is it continuous, a short peak, or isolated hot lumps with limited contact?
- Which heat-resistance grade does the offered belt carry, and to which standard?
- Can the supplier show heat-aging test results for that grade, for the same specification you are buying?
Two belts quoted “up to 800°C” can be very different products. The grade, the aging result, and the conditions behind the number tell you which one fits your duty.
Why Heat-Resistant Belts Fail Early
Most heat-resistant belts do not fail because the surface cannot take the heat. They fail at the bond between the cover and the first fabric ply. Heat hardens the cover, the bond to the carcass weakens, and the cover starts to crack and peel away.
- Cover hardening and cracking: the top cover ages, turns hard, and cracks across the surface.
- Loss of flexibility: a hardened cover troughs poorly and flexes badly over pulleys.
- Separation from the carcass: the cover lets go of the first ply, and the belt has to be replaced long before the carcass is worn.
That is why a heat-resistant belt has to be treated as a system: cover compound, bonding layer, and carcass. A heat-resistant cover on an ordinary bond line will still fail early. When you compare offers, ask about ply adhesion after heat aging, not only the heat class of the cover.
Should a Heat-Resistant Belt Be Spliced in the Factory?
Where the conveyor allows it, yes. A splice in hot service has to hold the cover and carcass together as well as the belt itself does, and site conditions such as dust, humidity, and rushed curing make that hard. An endless belt made in the factory moves the splice into controlled conditions.
If the conveyor can be opened to fit a closed belt, ask for an endless belt spliced in the factory. If it cannot, plan the site splice carefully; this guide on why conveyor belt splices fail covers the main risks.
A foundry that stopped splicing on site
A foundry in Indonesia had struggled for a long time with the splices on its heat-resistant conveyor belt. Instead of splicing on site again, the plant ordered complete belts from Hongkun, spliced in our factory and delivered ready to fit, with no splice work on site. The splices now last about twice as long as before.
The same plant also buys its shot blasting machine belts from us, so its conveyor belts and blasting belts come from one supplier. More foundry belt applications are on the foundry conveyor belts page.
When a conveyor cannot take an endless belt, Hongkun ships the belt open-ended with the splice steps pre-skived in the factory, a splice material kit (raw rubber, cement, and cover rubber), and video guidance for the site crew.
Does Every Heat-Resistant Conveyor Belt Need Steel Cord?
No. A heat-resistant conveyor belt may use an EP fabric carcass or a steel cord carcass. Temperature alone does not decide which reinforcement is suitable.
Heat resistance depends on the cover compound, bonding system, cover thickness, carcass, and full belt construction. The carcass must also match the working tension and conveyor duty.
Steel cord may be reviewed for
- Long conveyor centers
- High working tension
- Heavy loads
- Wide belts
- Low elongation requirements
EP fabric may suit
EP fabric construction may suit many general or medium-tension conveyors. Final selection should consider the required strength, pulley diameters, take-up arrangement, splice method, belt width, and load.
If the current construction is unknown, send photos of the old belt marking and cut edge.
What Happens After You Send the Basic Information?
The technical review uses the initial information to identify missing technical and commercial details. The review normally follows four steps.
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| Step | Review focus | What it protects |
|---|---|---|
| 1. Check the dimensions | The supplier reviews the length, width, finished thickness, and required quantity. | Prevents the first quotation from using the wrong supply scope |
| 2. Confirm the heat condition | The review separates continuous material temperature, short peaks, and measured belt-surface temperature when available. | Prevents one temperature number from becoming an unsupported belt limit |
| 3. Review the conveyor duty | The technical team may ask about the material, load, speed, conveyor length, pulleys, take-up, splice, impact, and cooling. | Connects the belt structure to the actual operating condition |
| 4. Recommend a quotation basis | The proposal can state the suggested compound, carcass, strength, cover construction, price basis, and any open items. | Separates confirmed requirements from assumptions |
The buyer and supplier should confirm the final technical specification before production. This step prevents an early assumption from becoming an unapproved manufacturing requirement.
Copy This Heat-Resistant Conveyor Belt RFQ
Use this short message for your first inquiry:
Product: Heat-resistant conveyor belt Total length: ___ m Belt width: ___ mm Finished thickness: ___ mm Conveyed material: ___ Material form: Lumps / Fines / Mixed (largest lump size: ___ mm) Normal material temperature: ___ °C Temperature measurement point: ___ Short peak temperature and duration: ___ Measured belt-surface temperature, if available: ___ °C Belt speed and conveyor length, if known: ___ Heat-resistance grade required, if known: T1 / T2 / T3 / T4 / Supplier to recommend Belt ends: Endless (factory-spliced) / Open-ended Heat-aging test report required: Yes / No Quantity: ___ Existing belt construction or marking: ___ Unknown technical items: Supplier to recommend Destination country or port: ___ Photos, drawing, or data sheet attached: Yes / No
Quantity and destination help define the commercial scope. Photos and old specifications can reduce uncertainty in replacement projects. You can upload drawings and photos directly on the inquiry form.
What Should the Preliminary Quotation Show?
A useful preliminary quotation should identify the information supplied by the buyer. It should also separate confirmed requirements from supplier assumptions.
Check whether the quotation states:
- Belt dimensions and quantity
- Proposed fabric or steel cord construction
- Strength or carcass basis
- Proposed cover construction
- Heat-resistance grade and the standard it refers to
- Temperature basis used for the recommendation
- Belt ends: endless or open-ended, and any splice materials included
- Items included or excluded from the price
- Packing, trade term, destination, and expected lead-time basis
- Technical details that still require confirmation
Once you receive an offer, use Hongkun’s guide on how to compare heat-resistant conveyor belt quotations. It explains how to review the manufacturer, technical deviations, supply scope, documents, and delivery terms instead of comparing price alone.
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Frequently Asked Questions
Is the belt-surface temperature the same as the material temperature?
No. The belt surface usually runs cooler than the material, because the belt cools on the return run and short contact does not bring it up to the material’s temperature. Fines, deep layers, and long contact narrow that gap.
Can a belt carry material hotter than its heat-resistance grade?
Often, yes. The grade refers to the belt, not the material. Whether a given material temperature is acceptable depends on particle size, layer depth, contact time, and cooling, so it should be reviewed with the full operating condition.
What does “up to 800°C” mean on a heat-resistant belt?
It describes a material temperature under specific conditions, usually short peaks or isolated hot lumps with limited contact. It is not a temperature the rubber cover can run at. Ask for the grade, the test standard, and heat-aging results.
Can I request a quote if I do not know the finished thickness?
Yes. Mark the thickness as unknown and send the old belt marking, specification, photos, or sample information. The supplier may need more conveyor data before recommending the final construction.
Is the material temperature enough for a final belt recommendation?
No. Material temperature is a starting point. The review may also require peak duration, belt-surface temperature, particle size, contact time, speed, cooling, load, and conveyor data.
Does a heat-resistant belt always need a steel cord carcass?
No. The belt may use EP fabric or steel cord reinforcement. The choice depends on working tension and conveyor duty, not temperature alone.
Can Hongkun deliver a heat-resistant belt already spliced?
Yes, when the conveyor allows it. Hongkun can supply the belt endless, spliced in the factory. Otherwise it ships open-ended with pre-skived splice steps, a splice material kit, and video guidance.
