HTT has been dedicated to deep hole drilling technology since 1997. Currently, HTT employs over 200 people across three business units. We can design, manufacture and service deep hole drilling machines. We can also offer gun drilling job shops. Because of our extensive knowledge and experience in deep drilling machine, tooling and process, HTT is capable of providing our customers solutions across a broad spectrum of industries.

HTT has being dedicated in deep hole drilling for over 25 years. We offer a full line of deep hole drilling machines with tailored made specifical fixturing and machine configurations to meet customer applications and requirements. You can contact us for information about our deep hole drilling machines. Deep hole drilling is where the hole depth to diameter can be upto 400:1 ratio. Deep hole drilling consists of two techniques: Gun Drilling & BTA Drilling.

Gundrilling is a deep hole drilling process that uses a long cutting tool to produce holes in metal at large depth - to - diameter ratios.  Gun drilling  is  effective  in diameters from 1–50 mm[0.04–2.00 in].A gundrill tool differs from a conventional twist drill by its unique shank and head geometry; a standard gundrill has a V shape groove to flash our chips and oil with built in coolant hole in the tool.

BTA drilling is a deep hole drilling process that uses a specialized drilling tool on a long drill tube to produce deep holes in metal, from holes with a diameter of 20 mm [0.80 in] and larger, up to depth-to-diameter ratios of 400:1. BTA drilling is the most effective method of drilling deep holes, as it is a cleaner, more reliable and capable process than conventional twist drills, and can achieve larger diameters and higher feed rates than the alternative gundrilling.

Deep hole drilling machine tool refers to the machine tool equipment specially used in the process of deep hole drilling. The deep hole drilling machine has a wide range of applications, with high rigidity, high accuracy, high speed, high efficiency, high reliability, large torque and other characteristics. The use of deep hole drilling machine can save the process equipment, shorten the production process cycle, ensure the product processing quality, improve the production efficiency.