RFQ-гайд для закупщиков специальных твердосплавных сверл из Китая: чертежи, допуски, охлаждение, покрытия, MOQ и сроки.
Custom carbide drills are not just non-standard diameters. Buyers often need a step drill, flat-bottom drill, coolant-through drill, micro drill, long drill, special point angle, private-label marking or coating chosen for a specific work material. A good RFQ makes the difference between a fast quote and several days of clarification.
Custom drill examples and RFQ entry points
Custom Tooling Cases
Browse custom carbide drill, reamer and end mill examples before sending a drawing.
Custom Step Drills Guide
Learn when a step drill can reduce tool changes and improve diameter-to-diameter coaxiality.
Send a Custom Carbide Drill RFQ
Share drawings, work material, tolerance, coating and annual quantity for a factory-direct quote.
Custom carbide drill types buyers request
| Custom drill type | Typical reason | Critical RFQ detail |
|---|---|---|
| Step carbide drill | Multiple diameters in one tool and fewer tool changes | Step diameters, step length, chamfer/radius and coaxiality requirement |
| Flat-bottom carbide drill | Blind holes, counterbores and flat-bottom features | Point geometry, bottom finish and whether coolant holes are needed |
| Coolant-thru carbide drill | Deep holes, chip evacuation and heat control | Depth ratio, coolant pressure, flute length and work material |
| Micro carbide drill | Small holes in precision parts | Runout, holder type, coating and minimum order quantity |
| Private-label drill | Distributor or OEM brand supply | Laser marking, packaging, batch traceability and repeat-order rules |
RFQ checklist for faster quotes
- 2D drawing or 3D model, plus any reference tool currently used.
- Workpiece material, hardness, machine type and coolant condition.
- Diameter tolerance, hole depth, surface finish and runout requirement.
- Coating preference or cutting problem to solve: wear, chipping, built-up edge or chip clogging.
- Trial quantity, target price range, annual usage and packaging/marking requirements.
How to avoid bad custom drill samples
- Do not quote only from a photo when the tool has steps, coolant holes or tight tolerance.
- Confirm whether the supplier controls grinding, inspection and coating or outsources key steps.
- Ask for first-article inspection details before repeating an annual order.
- Keep sample feedback specific: hole size, burr, chip shape, wear pattern, noise and tool life.
Send your custom carbide drill drawing and machining problem. We will review manufacturability, coating and sample lead time before quoting.
Теги
производитель специальных твердосплавных сверл КитайOEM поставщик твердосплавных сверлзавод ступенчатых сверлплоскодонное твердосплавное сверлоRFQ твердосплавное сверло