Kovai drill string component is designed to maintain structural integrity under extreme operating conditions. Combining advanced metallurgy with precision manufacturing, our drill strings support safer, more efficient, and more productive drilling operations in the field
Outside Diameter
76 - 127 (mm)
3" - 5"
Wall Thickness
Upto 14mm
Pipe Length
3.2 to 32 Feet
Key Differentiation
Manufactured from premium-grade steel for exceptional strength and fatigue resistance.
Ensures secure connections, easier make-up and break-out, and reduced thread wear.
Minimizes pressure loss and delivers efficient air transfer to maximize hammer performance.
Built to withstand abrasive conditions and repeated drilling cycles.
Maintains hole accuracy and drilling stability even in deep-hole applications.
Equipped with protective coatings to enhance durability and extend service life in harsh environments
| Min Pipe Length | 1000mm | 3.2 feet |
| Max Pipe Length | 9500mm | 32 feet |
| Outside Diameter Range | 76mm – 127mm | |
| Wall Thickness | Upto 14mm | |
Precision-engineered for demanding conditions, Kovai DTH Drill Strings deliver strength, durability, and dependable performance with every meter drilled
Testimonials
The Kovai 6" class hammer performs excellently at all depths. In my 36 years of hard rock drilling experience, I feel it is quite possibly the fastest penetrating hammer on the market today!!
In the hard, abrasive iron ore at Mont-Wright Mine, the Kovai DTH hammer delivers excellent penetration with outstanding reliability. It handles tough conditions with ease and keeps our drilling efficient and consistent.
We tested Kovai DTH hammers against major brands in multiple quarries. They delivered strong penetration, reliable performance, and excellent service life in tough rock conditions. Based on their overall performance and durability, we adopted 5-inch and 6-inch Kovai hammers for our South Carolina drilling operations.
We recently had a multiwater well project near Pinnacles National Park, east of Soledad, CA. The lithology consisted of upper sandstone and decomposed granite followed by hard, weathered granitic rock. Prior to the Kovai hammer with 7.5" bit, we were averaging 140' per day with 6" button bits and drill collars and various other hammers. Once we switched to the Kovai hammer, our production increased to 120' per hour average. With auxiliary air, we were able to reach 660' on multiple holes that were producing in excess of 60 gallons per minute. We look forward to Kovai launching larger hammers and we appreciate their local distributorship and assistance
We've been using Kovai's 8-inch DTH hammer for the past two years, and it's performed very well in our water well drilling operations. It has delivered reliable performance while saving us money compared to some of the bigger brands. I'd definitely recommend giving Kovai a try if you're looking for quality and value