Conveyor Belt RFQ Guide for B2B Buyers: 18 Specifications a Factory Needs

A conveyor belt RFQ can look complete and still leave a factory unable to quote the right belt. Width, length, and quantity identify the size of the order, but they do not explain what the belt must survive. A 1,000 mm rubber belt carrying limestone at ambient temperature is a different product from a belt of the same dimensions handling hot clinker, oily material, or high-impact ore.

For a procurement manager, missing technical information creates two problems. Suppliers may quote different constructions under the same product name, making price comparison unreliable. Or they may return repeatedly for clarification, delaying both quotation and production.

This conveyor belt RFQ guide covers 18 specifications worth confirming before a bulk order. The objective is not to turn purchasing staff into conveyor designers. It is to give the factory enough operating, dimensional, and commercial information to identify uncertainty, recommend an appropriate construction, and prepare a quotation that can be compared on a like-for-like basis.

1. Why “Rubber Conveyor Belt, 1,000 mm Wide” Is Not Enough

Industrial rubber conveyor belts are application-dependent components. Two belts can have the same width and overall thickness while using different carcass constructions, tensile ratings, cover compounds, cover thicknesses, and splice arrangements.

This matters commercially because a quotation is only comparable when suppliers are pricing substantially the same requirement. If Supplier A assumes a general-purpose EP belt while Supplier B prices a higher-strength carcass with a specialized cover, choosing the lower unit price does not represent a true supplier comparison.

The problem becomes more serious in replacement projects. A purchasing team may have an old invoice containing only a short product description, while the maintenance team knows that the existing belt has suffered cover wear, edge damage, splice failure, or excessive stretch. That failure history is part of the RFQ information because it can change what should be specified for the replacement.

For general-use textile conveyor belting, ISO 14890:2026 is one relevant international specification. Importantly for buyers, the standard recognizes that some items still need agreement between manufacturer and purchaser and includes details intended to be supplied with an enquiry. A standard designation therefore does not remove the need for application data.

2. The 18 Specifications to Put in a Conveyor Belt RFQ

The following fields are not a universal engineering calculation sheet. Their purpose is to help the supplier understand what is fixed by your approved specification, what is dictated by the operating condition, and what still requires technical review.

3. Start With the Application Before You Lock the EP Conveyor Belt Specification

For many industrial lines, an EP rubber conveyor belt is a practical starting category because a textile carcass combines strength with useful flexibility. But “EP conveyor belt” is a construction family, not a complete purchase specification.

The RFQ still needs to establish the required strength rating, carcass construction, cover thicknesses, cover performance and operating conditions. SINOCONVE's confirmed manufacturing range includes fabric conveyor belts from EP100 to EP600, but that production range should not be mistaken for a recommendation that a particular EP rating suits a particular conveyor. Required strength should come from the approved equipment specification or appropriate conveyor engineering data.

This distinction matters in supplier comparison. If one factory receives only “EP conveyor belt” and chooses a lighter construction while another interprets the same request more conservatively, their quotations cannot be compared by price alone.

4. Material Conditions Determine More Than the Product Name

A heavy duty conveyor belt should be specified around the load it actually encounters. Crushed rock introduces abrasion and potentially cutting or impact. Hot clinker adds thermal exposure. Material contaminated with oil introduces a different compound requirement. Underground or other regulated applications may introduce fire-safety or electrical-conductivity requirements that must be stated explicitly.

This is why “mining belt,” “cement belt,” or “heavy duty belt” is not enough for a technical quotation. Those descriptions identify an industry, not an acceptance criterion.

Temperature deserves particular care. Give the supplier the material temperature at the belt contact point, including normal and credible maximum conditions, rather than only the ambient temperature around the conveyor. If hot material arrives intermittently, mention that operating pattern as well. This information is particularly important when the application may require a heat resistant conveyor belt rather than a general-purpose cover compound.

The same logic applies to abrasion. Instead of asking vaguely for “very wear resistant rubber,” provide the required cover grade or test requirement if the project already specifies one. Where it does not, describe the material, lump size, loading arrangement and current wear pattern so the factory can review the exposure.

5. Fabric Belt or Steel Cord: Do Not Make the Decision From “Heavy Duty” Alone

One common RFQ ambiguity is the phrase “heavy duty conveyor belt.” It does not tell a factory whether the reinforcement should be fabric or steel cord.

Fabric construction remains suitable for many industrial conveyors where the required strength and system geometry fall within the selected belt's design conditions. Steel cord construction becomes relevant when system calculations or the existing equipment specification call for substantially higher tensile capability and low elongation behavior, particularly on demanding long-distance or high-tension conveyors.

For steel cord belting, ISO 15236-1 covers design, dimensions and mechanical requirements for general-use steel cord conveyor belts. The key purchasing point is that changing from fabric to steel cord conveyor belt is not simply an upgrade to a “stronger belt.” Pulley geometry, tension, take-up, splice design and installation requirements must remain compatible with the conveyor.

If a project is approaching this decision, compare the proposed construction with the conveyor design data rather than selecting steel cord solely from the phrase “heavy duty.” The supplier should be able to explain what strength rating and construction it is quoting and identify any deviation from the buyer's existing specification.

6. Standards Belong in the RFQ, but a Standard Number Is Not a Complete Specification

Standards make supplier comparison more objective only when the buyer identifies what standard and performance requirements actually apply.

For textile construction, ISO 14890:2026 specifies requirements for rubber- or plastics-covered conveyor belting for general surface use on flat or troughed idlers. For steel cord construction, ISO 15236-1:2016 addresses applicable performance and construction requirements. Where electrical conductivity is a required safety property, ISO 284:2025 specifies maximum electrical resistance and the corresponding test method.

These standards address different properties and product scopes. A statement such as “ISO conveyor belt” therefore has little procurement value by itself. The RFQ should identify the applicable standard, grade or project requirement and specify what documentation the supplier must submit.

7. Make Test Reports and Inspection Requirements Part of the Purchase Requirement

Documentation is easier to agree before an order than after production.

SINOCONVE's confirmed conveyor belt quality control process includes incoming raw-material inspection, production-stage inspection, and final testing and inspection before shipment. Product test reports can be provided, and third-party testing can be arranged when customers have special standard requirements. These capabilities are useful only if the RFQ clearly states what the buyer expects to receive.

Procurement teams should therefore define whether they require a product test report, certificate documents, third-party inspection, specific test items, pre-shipment photos, packaging confirmation, or other project documentation. For tender business, add the documentation schedule early enough for the supplier to review feasibility and cost before the PO is issued.

Sample testing can also be discussed before a bulk order. SINOCONVE can provide standard samples or small test samples, subject to the actual product and requirement. A sample can support material or construction verification, but it does not replace agreement on the production specification and acceptance criteria for the bulk order.

8. Supplier Comparison: Normalize the Technical Offer Before Comparing Price

Procurement managers often receive quotations in different formats. One supplier emphasizes price per meter, another lists cover grade, another includes packing, and a fourth substitutes a different carcass. Putting those offers into one spreadsheet does not automatically make them comparable.

Normalize the technical scope first.

This comparison method is especially useful for bulk orders and tenders. It turns supplier evaluation from “Which number is lowest?” into “Which suppliers are quoting the same technical and commercial scope?”

Buyers dealing with international sourcing should also consider specification control, samples, test data, pre-shipment inspection, export packing and documentation together rather than treating freight as a separate purchasing issue. The related guide on conveyor belt sourcing and shipping considerations provides a useful next step for procurement teams reviewing overseas supply risk.

9. What Factory Capability Should a Procurement Manager Verify?

An RFQ also tests whether the supplier can manufacture the requested construction consistently. Buyers should distinguish between catalogue breadth and actual production capability.

According to SINOCONVE's current company information, its conveyor belt operation has eight fabric conveyor belt production lines and two steel cord conveyor belt production lines. The confirmed manufacturing range covers widths from 100 mm to 3,000 mm, overall thicknesses from 3 mm to 100 mm, fabric ratings from EP100 to EP600, and steel cord ratings from ST500 to ST7500.

Those figures describe manufacturing capability; they are not recommended specifications for every application. A buyer should still determine the required construction from the conveyor and operating conditions.

SINOCONVE also supports customized conveyor belt production based on customer requirements, including OEM/ODM, logo and packaging customization. The company does not treat customized conveyor belts as standard stock products, so accurate RFQ information is particularly important for production planning.

10. MOQ, Lead Time and Packaging Should Be Checked Before Purchase Approval

Commercial terms can invalidate an otherwise suitable supplier if they are reviewed too late.

For SINOCONVE conveyor belts, the confirmed minimum order quantity is 50 meters. Standard production lead time is normally around 30 days. For urgent requirements, a 15–20 day production arrangement may be possible after confirmation. Buyers should treat these as general commercial conditions rather than a guaranteed schedule for every specification; actual timing needs to be confirmed against the product, quantity and production plan when the order is placed.

For conveyor belt export packing, SINOCONVE can use PVC board plus iron-sheet protection and palletizing to help protect rolls during transportation. If a tender requires particular seaworthy packing, roll identification, customer logos, labels or other marks, put those requirements into the RFQ rather than adding them after production.

11. What to Send When You Do Not Know All 18 Specifications

Many procurement teams inherit a conveyor rather than design it. Missing data is normal. Guessing is not.

If you cannot identify the carcass rating, cover grade or another technical field, send the supplier the existing belt marking or datasheet, purchase history if reliable, conveyor drawing, photos of the belt and loading point, and information about the conveyed material. For a replacement prompted by failure, include close photos of the damaged area and explain where the failure occurs.

A worn belt can provide useful clues. Repeated top-cover wear points toward a different question from longitudinal tearing, damaged edges, splice separation or excessive elongation. The objective is not to diagnose the failure from one photograph, but to give the technical team enough evidence to ask the right follow-up questions.

For a new conveyor where no approved belt specification exists, provide the conveyor design data and ask the relevant engineer or supplier technical team to review the requirement. Procurement should not choose a tensile rating or cover construction solely because it appears frequently in supplier catalogues.

12. A Practical RFQ Sequence for Bulk Conveyor Belt Orders

1. Collect the existing technical requirement. Start with approved drawings, OEM data, previous specifications and maintenance records.
2. Add actual operating conditions. Describe the conveyed material, temperature, loading, environment and any recurring failure.
3. Define the acceptance basis. State applicable standards, cover requirements, inspection, test reports and documentation.
4. Add commercial information. Confirm quantity, roll lengths, destination, target schedule, packaging and marking.
5. Ask suppliers to declare deviations. Any proposed alternative should be visible rather than hidden inside a product code.
6. Normalize offers before comparing price. Compare construction, documentation, packing and delivery scope before comparing unit cost.

This process also shortens technical clarification. A factory can respond to a structured RFQ with a defined offer instead of exchanging multiple emails just to establish what product the buyer needs.

13. Frequently Asked Questions About Conveyor Belt RFQs

13.1 What is the minimum information needed to request a conveyor belt quotation?

At minimum, provide belt type, width, length, required strength or existing belt specification, cover requirements, conveyed material, quantity and destination. For a technically reliable quotation, also provide operating temperature, lump size, capacity, belt speed, conveyor geometry, pulley information, splice requirements and applicable standards where relevant.

13.2 Can I request a quotation if I do not know the EP rating?

Yes. Do not select an EP rating by guesswork. Send the current belt specification or conveyor design data and clearly identify the strength rating as requiring technical review. Photos and drawings are particularly useful for replacement projects.

13.3 Is belt thickness enough to compare two heavy duty conveyor belt offers?

No. The same overall thickness does not prove the same carcass strength, ply construction, top and bottom cover thickness, rubber performance or compliance requirement. Compare the complete technical specification.

13.4 Should every conveyor belt RFQ specify ISO or DIN?

Only where the standard is relevant to the product, project or acceptance requirement. State the specific standard or performance requirement rather than writing only “ISO standard.” Different conveyor belt standards address different constructions and properties.

13.5 What should I ask a conveyor belt factory to provide before shipment?

Agree this during RFQ or order review. Depending on the project, requirements may include product test reports, relevant certificate documents, final inspection records, third-party testing or inspection, packing confirmation and product identification. Buyers can review SINOCONVE's quality assurance process and available conveyor belt tests when deciding which evidence should be specified in the purchase requirement.

13.6 How should I compare quotations from different conveyor belt suppliers?

First normalize carcass construction, strength, covers, standards, documentation, quantity, roll configuration, packing and delivery terms. Then compare price. A lower price for a different construction is not a like-for-like saving.

13.7 What if the existing conveyor belt keeps failing?

Include the failure pattern in the new RFQ instead of automatically reordering the same specification. Provide photos and describe whether the problem is cover wear, cutting, edge damage, splice failure, stretching, heat damage or another recurring symptom. The conveyor itself should also be inspected because belt damage is not always caused by belt specification alone.

13.8 Can SINOCONVE manufacture customized conveyor belts?

Yes. SINOCONVE supports customized conveyor belt production and OEM/ODM based on customer requirements. Confirmed customization options include product specification, logo, color and packaging. Because customized conveyor belts are generally produced to order rather than supplied from standard inventory, complete technical information helps reduce clarification before production.

14. Prepare a Better Conveyor Belt RFQ Before Asking for the Final Price

A good conveyor belt RFQ does more than obtain a price. It establishes what each supplier is actually offering and gives procurement a defensible basis for technical and commercial comparison.

For an upcoming bulk order, prepare the belt dimensions and required construction first, then add the conveyed material, temperature, operating conditions, conveyor layout, applicable standard, quantity and destination. If you are replacing a failed belt, include the current specification, drawings and clear failure photos rather than hiding the problem behind a generic product description.

SINOCONVE can review requirements for fabric and steel cord industrial conveyor belts within its confirmed manufacturing range. For technical clarification or quotation preparation, use the SINOCONVE contact and RFQ page or email sales@sinoconve.com. Providing the relevant application and specification information with the first enquiry will make it easier to confirm capability, identify deviations and prepare a quotation suitable for purchase-side comparison.