JCDRILL 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. It is well known that the performance of the material could be played well only after going through heat treatment to release its maximum potential, therefore, the choice of material and heat treatment process are important on an equal basis. Drill pipes are widely used in mining,geological exploring and all kinds of drilling(water,oil,gas,etc) projects.As a leading drill pipe manufacture,we make all kinds of standards and non-standard drill pipes for our customers. Our drill pipes including steel drill pipe,mining drill pipe,water well drill pipe,oil well drill pipe,API drill pipe,DTH drill rod,wireline drill rod,etc. We can produce as your request of carbide size, different length of drill rods.