Small hole diameter taper drill rod 7 degree for rock drill rod taper

Product Description
Drill rod using thread system. Drilling precision can be further improved by using this as the first rod in a normal drill string. Furthermore, since this is a speed rod design it will produce straighter holes and at least 10% higher penetration rate in good rock conditions compared to rod and coupling sleeve combination system.

Thread Drill Rod Feature:
1).Made from steel as same grade as internationally well-known brand
2).Hollow drill steel processing by Boring Method ensuring quality reliability
3).Optimize processing procedure, entirely automatic threading equipment to finish the thread naturally and reduce the concentration of stress.
4).Shape once of whole heat-treatment ensures long lifespans.

 Services:
  a. Our sales team will response for your question within 24 hours (Holidays Excluded)
  b. Technical Support will be available in any time
  c. Free replacement will provide once the failure confirmed caused by our product quality