Specifications

used water well drill bit
1. Steel Carbide
2.16 years experience
3.Widely used for mining
4.Quality closed to Atlas.

 

15 inch high quality used water well drill bit   --  ND330

 

Xiamen Zhaoxing Machinery & Electric Equipment Co., Ltd is professional and specialized in Middle Air Pressure DTH Hammers,  High Air Pressure DTH Hammers,   Big Hole DTH Hammers,  Reverse Circulation Hammers,  Down The Hole Bits, Overburden Dirllng,  Hole Opener Bits,  Thread Bits.  

 

 

According to different drilling application, we have different design to meet customers with good quality and good price .

 

 

1	Type	WaterWell, Oil and Construciton  DTH Bits
2	Material	Steel + Carbide
3	Application	Mining, Quarrying, Ground engineering
4	Advantage	Quality closed to Atlas, and competitive price
5	Button bit face shape design	Concave face, Convex face, Double gauge face, Flat face
6	Carbide button shape design	Domed/Round button,Parabolic/Semi-Ballistic Buttons, Ballistic Button, Sharp Button, Flat Button
7	Certificate	ISO9001
8	Package	Inner package with cartons,outer package with wooden case
9	Delivery	Within 20days after receive your payment
10	Payment Terms	T/T Western Union MoneyGram
11	MOQ	10 pcs/size

 

 

15 inch high quality used water well drill bit    --     ND330

 

Drill Bit	Bit Dia. (mm)		Air Holes No.	Gauge Buttons	Front Buttons
	mm	inch
ND275	311	12 1/4	3	15*Φ18	36*Φ16
	334	13 1/7	3	18*Φ19	44*Φ18
	356	14	3	18*Φ19	48*Φ18
	368	14 1/2	3	20*Φ19	50*Φ18
	381	15	4	20*Φ19	54*Φ19
ND330	381	15	4	20*Φ19	54*Φ18
	406	16	4	20*Φ19	58*Φ18
	431	17	4	20*Φ19	64*Φ18
	445	17 1/2	4	24*Φ20	72*Φ18
	470	18 1/2	4	24*Φ20	80*Φ18
ND475	495	19 1/2	4	24*Φ20	88*Φ18
	525	20 2/3	4	24*Φ20	100*Φ18
	580	22 7/8	4	24*Φ20	116*Φ18
	660	26	4	28*Φ20	140*Φ19
	680	26 3/4	4	28*Φ20	144*Φ19

 

 

         

Bit Face Shape Selection
	Drop Center Bit For high penetration rates in soft to medium hard and fissured rock formatios Low to medium air pressures. Maximum hole deviation control.
	Concave Face the all-round application bit face specifically for medium hard and homogenerous rock formations Good hole deviation control and good fIushing capacity
	Convex Face For hiigh penetration ratas m soft to medium-hard wlth low to medium air pressures It is the most rasistance to steel wash. and many reduce the load and wear on the gauge buttons. but poor hole deviation control.
	Double Gauge Face This kind face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high aii pressures and good resistance to steel wash step gauge bit.
	Flat Face Bit This kind of face shape is suitable for hard to very hard and abrasive rock formations in appllications with high air pressure. Good penetration rates an resistance to steel wash.

 

carbide button shape selection
	Domed/Round Button Domed /Round Buttons are usually used as gauge buttons of DTH Bits. suitable for very abrasive and very hard formations.
	Parabolic/Semi- Ballistic Buttons Parabolic Buttons are usually used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard formations.
	Ballistic Button Ballistic Buttons are usually used as front buttons of DTH Bits,suitable for medium abrasive and medium hard formations. They can also be used as gauge buttons if the rock is soft.
	Sharp Button Sharp Buttons are usually used as front buttons of DTH bits for soft formations where fast penetration rates are possible and
	Flat Button Flat buttons are usually used as protection buttons to reduce Near on rubbing surfaces of DTH Bits.