Drag bit are manufactured from forged high quality alloy steel and PDC cutter insert, plus state of art welding technology and multiple precision heat treatment to provide highest penetration rate and longest lifespan at roughest condition. Drag bits are designed for medium to hard formation and are used in areas that contain a lot of rock and also in the oil field.

3 wings step drag bits

3 wings step drag bits are one piece construction of alloy steel cast with tungsten carbide cutting tips and gauge sides to ensure longer life. It has 3 wings and 3 flushing holes. Compared with 4 wings, 3 wings step drag bits tend to drill faster and aggressive, whereas, are shorter lasting and less durable.3 wings step style drag bits will produce larger cuttings force than chevron style drag bit. Rotary table speed ofstep drag bits should be between 60 and 80 rpm with light weight on bit (WOB).

3 wings step drag bits are economical tools when drilling softer geological formations and shallower depths, they are primarilydesigned for soft tomedium formations, such as Clay, Loam, Silt ,Mostsoft-to-medium soilsthat have some moisture, etc. And also step drag bits are recommended for drilling in Mining, Exploration, Environmental, Water well, Geo Exchange, etc.

Note: The diameter and thread showed as above are usual size, other sizes are available upon request.

Thread size: 2 3/8''  Reg, 2 7/8'' Reg, 3 1/2'' Reg, 4 1/2''  Reg, 6 5/8''  Reg, 2'' API IF, 2 3/8'' IF, 2 7/8''  IF, A Rod, N Rod, AW, BW, NW, AWJ, BWJ, NWJ.

Sinodrills drag bits features:

1, A solid one piece heat treated, 4140 alloy steel body for bit strength & durability;

2, CNC threaded machining for proper installation &use;

3, Forgings are milled to better seat the carbide inserts.

4, Select tungsten carbide inserts 5.5mm thick are standard.

5, Relief is hand ground behind carbide inserts for maximum performance.