Factory direct low-cost high-quality petroleum drilling, mining drill, drill wells

I perennial companies to provide steel, tipped tricone bit and PDC bit as well, the water temperature wells, oil wells, mining and exploration projects. ?? 1? Model is complete. Conventional model: 59mm, 76mm, 89mm, 5 7/8 ", 6?", 7 1/2 ", 7 7/8??", 8 1/2 ", 9 1 /??????? ???? "?? 17 1/2"?.? 2 "?? 12 1/4" and 13 1/2 "??, 14 3/4", 15 1/2, 26 "(Note: It is Regulation models processed custom) 2. IADC No. complete ?? tipped:???.?? 437, 517, 537, 617, ......... ?? steel teeth????:? 127,114,116,126,136,137,216,217 ......... ?? 3 bit size range:?.??? 3 1/2 "----- 17 1/2 . "? ?? 4? for mining, piling, drilling wells, and other formations and development. ? ?? 5.? Our company can produce iron body PDC drill bits with the carcass. ? ?? 6? Product specifications in line with API and ISO certification. Website: www.hjbns.com