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.

 Detailed pictures 

<img src="/kf/HTB16f1XHFXXXXcJaXXXq6xXFXXXS/220089166/HTB16f1XHFXXXXcJaXXXq6xXFXXXS.jpg" alt="3 blades step drag bits" width="700" ori-width="960" ori-height="720"><img src="/kf/HTB1Ib8wHFXXXXbKaXXXq6xXFXXXY/220089166/HTB1Ib8wHFXXXXbKaXXXq6xXFXXXY.jpg" alt="3 blades step drag bits" width="700" ori-width="960" ori-height="720">

Zhongcheng attend many exhibitions

<img src="/kf/HTB13q6FHFXXXXbsXpXXq6xXFXXXN/220089166/HTB13q6FHFXXXXbsXpXXq6xXFXXXN.jpg" alt="3 blades step drag bits" width="700" ori-width="900" ori-height="600">

4.Hejian Zhongcheng Bit Manufacture Co.LTD. .(SRF)

Hejian Zhongcheng Bit Manufacture Co.LTD, our brand “SRF”,

“SRF” includes: Tricone bit( steel tooth & TCI bit),PDC drill bit (matrix & steel body),step drag bit,HDD Reamer bit (Hole opener),Stabilier,Drill pipe,drill rod,Rock Auger,bit breakers,bit subs,barrel reamer,open reamer ,rock reamers,diamond core bits,concave pdc bits,barrel reamers,open reamerbits,rock reamers,….--competitive price with high quality.

--timely delivery and wooden case packing

• --inspection:by you ,by inspection company,likeSGS.VB,,,,,,
  --YOU RUN AT NO RISK.

   

  5.FAQ

    

  1. How to make an order 

  When you make an order, please provide the follow datas: 

  1)Inform the rock condition and drill machine model;

  2)Confirm the bit series;

  3)Supply the specfications and thread sizes;

  4)If Samples, drawings, we can produce as all requested.  

• 2.how to do the inspection: work with SGS VB...