A rubber lining quotation is only as useful as the information behind it. A part number and a total area may be enough for a repeat order, but a new mining rubber lining project usually needs operating data, a drawing and a clear description of the wear problem. Without those details, a supplier may have to make broad assumptions about compound, thickness, bonding and cut patterns.
This checklist helps maintenance teams, OEMs and purchasing engineers prepare an RFQ for slurry pumps, pipelines, chutes, hoppers, tanks and other abrasive equipment. It also gives suppliers a practical way to review the application before recommending a rubber sheet or a cut-to-size liner. For a broader review of equipment types, wear zones and attachment methods, see our rubber rubber lining selection guide for mineral processing equipment
Begin with the equipment item and its duty. State whether the liner is for a slurry pump, pipe, elbow, reducer, chute, hopper, cyclone, tank or another component. Then add the information that controls wear:
These details do not replace an application review. They make the review more specific and help the supplier identify questions before pricing the job.
Wear is rarely uniform across a complete assembly. A pump inlet, pipe bend, chute impact point, flange joint and straight-run section can each need a different design approach. Mark those zones on a drawing, photograph or annotated PDF.
For every marked area, show the flow direction and identify whether the surface sees impact, sliding flow, turbulence or repeated contact with a sharp edge. Include the location of bolt holes, flange faces, transitions and any area that must remain clear for inspection or assembly. A simple wear map often prevents a quotation from treating the whole part as one flat sheet.
Natural rubber is often considered for abrasive slurry and impact service because its elasticity can help absorb energy from particles. Qihang Rubber's product pages describe mining rubber lining and natural-rubber sheet options, including NR or NR-blend constructions; the suitable compound still needs to be confirmed against the actual media, temperature and wear mode.
Ask the supplier to explain why the proposed compound fits the application. The discussion should cover abrasion, impact, tear resistance, chemical exposure and temperature rather than relying on a generic label such as "mining grade." If the application includes oil, solvents, strong chemicals or unusual heat, request an alternative material review instead of assuming that standard natural rubber is suitable.
Do not select thickness from a catalogue range alone. State the available clearance, the expected wear allowance, the substrate condition and the installation method. A pump liner, a chute impact pad and a pipe lining may all use rubber, but their thickness and attachment details can be different.
Your RFQ should ask the supplier to confirm:
Treat catalogue values as starting points. Final values should be approved for the equipment, installation process and inspection plan.
Send the latest drawing revision in PDF and, when available, a usable CAD format. Put the revision number and units on every file. Identify the datum, overall dimensions, radii, hole positions, bolt patterns, cut-outs, orientation and the face that contacts the process material.
For multiple pieces, add part marks and a simple packing or installation map. Call out tolerances that affect fit, especially at flanges, reducers and mating edges. If the rubber must be supplied in rolls, sheets or several joined sections, show the preferred seam direction and any limits on joint location.
Photographs of the removed liner are valuable too. Include a ruler or a known reference, identify the flow direction and mark the remaining thickness where possible. This helps distinguish uniform abrasion from a local design or installation issue.
A useful quotation states what will be inspected and what documents will accompany the order. Depending on the application, ask for a technical data sheet, material identification, dimensions, hardness, tensile strength, elongation, abrasion data or other agreed tests. Confirm the test method, sample location and acceptance range instead of listing numbers without a method.
Also clarify lot traceability, packing, storage guidance and installation instructions. Product-page specifications are useful for initial screening, but they are not a substitute for project-specific test records or certificates. If a project requires a particular standard, declaration or customer format, name it in the RFQ and ask the supplier to confirm what can be provided before order placement.
The following structure keeps the first request concise:
Please quote a mining rubber lining for [equipment and part name]. The handled material is [material], with approximately [solids concentration], [particle size], [flow or pressure] and [temperature]. The main wear mode is [impact/sliding/mixed].
Drawing [file name and revision] shows [number] pieces, [thickness or clearance requirement], [bonding or fixing method] and [surface finish]. Please recommend the compound and thickness, confirm available test documents, state tolerances and lead time, and identify any information needed before production.
Attach the drawing, wear photos, previous liner information and the delivery destination. If the part is urgent, separate the required quotation date from the requested delivery date so the supplier can respond accurately.
Before comparing prices, check that every quotation identifies the compound, thickness, dimensions, quantity, backing or bonding preparation, tolerances, inspection documents, packaging and delivery basis. Ask whether the price covers cutting, drilling, bevels, seams, templates, adhesive or installation support.
The lowest line-item price may not represent the lowest project cost if the cut pattern is incomplete, the wear zones are misunderstood or the installation materials are excluded. A quotation that lists assumptions gives the buyer a better basis for technical and commercial comparison.
A complete mining rubber lining RFQ connects the equipment, the wear mechanism and the production details. Start with operating data, map the wear zones, request a compound review and make the drawing package unambiguous. Qihang Rubber can review drawings, photographs and operating details to discuss a suitable rubber sheet, liner or cut-to-size solution for the application. Send the complete package before requesting a final quotation so the recommendation can be checked against the real service conditions.
Tianjin Qihang Plastic Technology Co., Ltd
12+ Years Expertise in Industrial Rubber Sheet Manufacturing • Global Export Leader • REACH/RoHS Certified
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