We are a leading manufacturer of rock drilling tools and diamond core drilling tools, like DTH hammers and bits, diamond core bits, reaming shells, core barrels, coupling, cross bits, drill rods located in Changsha, Hunan, China.
We have rich experience in this field of DTH hammers and bits for 20 years.
Owing to high quality, professional serivce and competitive price, we have gotten good reputation from our customers from all over the world, such as France, Spain, Italy, South Africa, Iran, Malaysia, Australia ad etc.
Wireline drill rods, AQ BQ NQ HQ to PQ, parallel threaded drill rods, DCDMA size AW-HW, and Metric sizes 42mm to 90mm, Tapered threaded drill rods, DCDMA sizes AWY-NWY, AWJ, BWJ and S75 drill rods.
Flush-Jointed casing Size Available: NW, HW, PW
This is the most popular type of casing used in geotechnical applications. It has integral pin and box threads at each end. The heavier wall section provides internal and external mating shoulders for the threads to butt-up against, preventing the threads climbing up under heavy torque loads.
X Series Casing Size Available: NX HX PX
(Casing Type: NX: O. D. 88.9mm HX: O. D. 114.30mm PX: O. D. 139.70mm SX: O. D. 168.30mm)
Flush-coupled casing tubes have a box thread at both ends and are connected together by a pin-to-pin coupling. This allows couplings to be replaced when pin threads become worn or damaged. It also means that the casing tube can have a thinner wall than the coupling, allowing the overall weitht of casing string to be minimized. This can be important when drilling to greater depths.
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.
Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.
Generally need 10-15 days
By air, By Express or By sea according to your requests.