TDD,born for drilling. 

TDD group have been focusing on DTH drilling for 16 years. We are specialized in manufacturing various DTH drilling hammers、matched drilling bits、drilling rigs and drilling pipes for water wells、mines and oil industries.

TDD has been promoting productivity in drilling industry, SPM ensure the safety and stability of drilling engineering, and provide professional, efficient and reliable whole drilling solutions. 

TDD have made tremendous development at the basic of high-quality, low price, good service since its establishment. All friends both at home and abroad are warmly welcomed to come here to establish and develop business relationship with us. 

TDD low pressure DTH drill bit is made of a hard alloy blade and steel. It is widely used in the protection of water well drilling and hard rock formation.