hss step drill bit

PDC drill bits are mainly used for Coal mining gas drainage hole, drainage hole, grouting hole, geological and hydrology drilling.

Application Petroleum & Gas ,Water well ,Mining and Tectonic Industries ,Oil field, Construction, Geothermal, Directional Boring.

1) supply new and junk drill bits,pdc bits,tci bits,tricone bits,rock bits.
2)steel tooth bits,drill pipe,scrap drill bits

1.Stepped three wings drag bit
2.all kinds of models
3.long service lifetime

4-12mm,4-20mm,4-32mm,step drill bit
straight flute, titanium coated,
packing: 1pc/ in a plastic sleeve,or 3pcs in wood case,
Material: HSS

1,tungsten carbide insert tricone bit
2.certified by ISO,API
3.wide size code
4.best price

HSS Step Drill Bit
For drilling holes in metal material, wood and hard plastic.

Electroplated diamond core drill bit with Sharper edges ensures Fast & Efficient drilling performance: High speed,Smooth cut.

step drill bit
Size:OEM straight flute,
surface coating: OEM
packing: 1pc/ in a plastic box,or 3pcs in wood case,
Material: HSS

Titanium coated
Size: 4-12, 4-20, 4-32mm
In wooden case

API Tungsten Carbide Drag Bits
1. ISO9001
2. good stability
3. high drill speed
4. cheap

Spiral Flute HSS Step Drill Bit,Step Drill Bits

1.Fully ranged products.
2.Used on excavation machines, shearers,mining roadheader
3.Prompt delivery

 
 Good Quality Drill Bit Sharpener &

1.Factory, specializing in manufacturing mining cutter bits for more than 6 years.
2.High performance

A drag bit is a drill bit usually designed for use in soft formations such as sand, clay, or some soft rock.

1.Factory, specializing in manufacturing mining cutter bits for more than 6 years.
2.High performance

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