Drag bit are manufactured from forged high-quality alloy steel and hard alloy, plus state of art welding technology and multiple precision heat treatment to provide the highest penetration rate and longest lifespan at the roughest condition.
A drag bit is usually designed for soft formations such as sand, clay or some soft rock. However, they will not work well in coarse gravel or hard rock formations. Uses include drilling water wells, mining, geothermal, environmental and exploration drilling. Whenever possible, they should be used to drill pilot holes because they produce cuttings that are easiest to log.
Three-wing bits tend to drill faster, whereas four-wing bits are longer-lasting, more durable, and drill a straighter hole Product Information: 1. wear resistance 2. high efficiency 3. long service life 4. direct selling with competitive price 5. MOQ: 1pc for testing the quality 6.customized order is available What we provide: Tricone bits TCI & stell tooth 3 7/8''~32''; Hole opener 200mm~1800mm; Single roller cone bit PDC Bit 3~9 baldes 4 1/8''~17 1/2''; Drag bits, blade drag bit,pdc drag bit,chervon drag bit. Drilling tools, collars, adaptor sub,stabilizar
HENGJI BIT: There are full types of drill bits for your choosing in Hengji . Include TCI tricone bit,steel tooth tricone bit,single roller cone bit,pdc bit, hole opener,drag bit, etc. Our bits are exported to global 58 countries. With good quality drill bits, we are the approved drill bits manufacturer and supplier for famous oil gas companies.As a good reputation OEM supplier, we are also a famous OEM manufacturer for famous companies. ISO9001 & SGS Certified drill manufacturer, we are proud to bring you top-quality drill bits at good prices. Door to Door delivery service is available too. Send us a mail to get the best price now.
Audited Supplier 
){kind=link}