• Model NO.：SD4 115mm Down The Hole Bits
• HS Code：84314320
• Production Capacity：5000pieces,Month

SD4 Bits

1154 1/2"27×φ147×φ13HD45-115 

Features

1. Simple and reasonable design, Low problem rate, long life.

2. Strict quality controlling, selected high quality special steels and carbide.
3. Produced by CNC machines, low air consumption, smooth drilling, Maximum impact power, High penetration rate.

 

Hammer inch  Bits diameter Shank1"64mm-70mm2 1/2"-2 3/4"BR12"70mm-95mm2 3/4"-3 3/4"MACH20/BR23"90mm-102mm3 1/2"-4"COP32/COP34/MACH303
M30/DHD3.5/BR34"105mm-152mm4 1/8"-6"COP44/DHD340/MACH44
SD4/M40/QL405"133mm-165mm5 1/4"-6 1/2"COP54/DHD350R/MACH50
SD5/M50/QL50/BR56"152mm-254mm4 1/8"-10"COP64/DHD360/SD6
M60/QL608"203mm-330mm8"-13"COP84/DHD380/SD8
QL80/M8010"254mm-380mm10"-15"SD10/
HN10012"305mm-508mm12"-20"DHD1120/SD12
HN120/HN125

Products photos:


 

Bit face shape selection:

1. Drop Center Bit

For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.

2. Concave Face

The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.

3. Convex Face

For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.

4. Double Gauge Face

This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.

5. Flat Face Bit

This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.

 

Carbife button shape selection:

1. Domed/Round Button

Domed/Round Buttons are usually used as gauge buttons of DTH Bits, suitable for every abrasive and very hard formations.

2. 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.

3. Ballistic Button

Ballistic Buttons are usually used as front buttons of DTH Bits, suitable for medium abrasive and mesium hard formations. They can also be used as gauge buttons if the rock is soft.

4. Sharp Button

Sharp Buttons are usually used as front buttons of DTH Bits for soft formations where fast penetration rates are possible.

5. Flat Button

Flat buttons are usually used as protection buttons to reduce wear on rubbing surfaces of dth bits.

Quality warranty:

Our hammers are made of high quality steel and all spares are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.

Package:
Using ply-wooden cases and pallet for exporting to protect products and avoid the damagement during transportation. Also we can customize package according to your special requests.

Transportation:
By air, By Express or By sea according to your requests