“11-degree tapered drill rod” identifies one important interface, but it is not a complete purchase specification. The buyer must also control the rock-drill shank, rod body, length basis, mating bit, quantity, marking and acceptance evidence.
Confirm both ends of the rod
Start at the rock drill. Record the drill model, chuck or shank requirement and any known controlled reference. At the bit end, state the 11° taper requirement and identify the mating bit family. Do not assume that two rods described as 11° are interchangeable when the shank, body or length differs.
| RFQ field | Evidence to send | Risk if omitted |
|---|---|---|
| Drill/shank interface | Model, existing rod markings and clear photos | Rod may not seat or transmit impact correctly |
| Rod body | Section and nominal family reference | Similar product names can hide a different body |
| Taper end | 11° requirement and mating bit identity | Wrong taper or fit can loosen, jam or damage parts |
| Length | Required length and measurement points | Supplier and buyer may use different datums |
| Quantity mix | Pieces per exact length/configuration | A correct total can still be an unusable mix |
| Inspection | Drawing/data reference and required report | Receiving has no controlled acceptance source |
| Packing/marking | Bundle label, rod identity and protection | Mixed or damaged rods are hard to trace |
Use the existing assembly as evidence, not the only standard
Photograph the complete drill, shank end, collar, rod body, taper and bit. Record readable markings. A worn rod or bit can help identify the family but may no longer represent the original geometry. Final confirmation should use controlled product data, an approved drawing or a verified sample process.
If a new supplier is involved, define sample/first-article checks before bulk release. Confirm that the sample represents the intended production route and that the field trial uses the approved drill, bit and operating context.
RFQ fields
Send drill model, shank/chuck evidence, rod body, 11° taper requirement, mating bit, length and datum, quantity by length, application, sample requirement, inspection records, marking, packing, destination and delivery plan. Review the Drill Rods collection and submit the specification through Request a Quote.
FAQ
Is every 11° bit compatible with every 11° rod?
No. Confirm the complete taper system, sizes, product references and condition; the angle description alone is insufficient.
Can a worn rod be used as the master sample?
Only with caution. Wear and repair can change the interface. Use controlled documentation or an approved reference for final acceptance.