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17 1/2"(444.5mm) Steel Tooth Tricone Bit For Soft Formation Drilling
NAME

17 1/2"(444.5mm) Steel Tooth Tricone Bit For Soft Formation Drilling

Summary information
17 1/2'' IADC 217 Milled Tooth Tricone Bit
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Description

API Certified factory of Tricone Bits and PDC bits
API is American Petroleum Institute, it is Authoritative in the world.
All products are produced in lines of API specifications.

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SOLIDKEY Tricone Bits  
 
 
Specifications                     IADC217G
 
Diameter  17 1/2"(444.5mm)
Bearing Type  Elastomer sealed bearing
Tooth Type  Steel Tooth/Milled Tooth
Circulation Type  Mud fluid
Thread Connection  7 5/8 reg pin
Gauge Protection  Available
Shirttail Protection  Available
Operating Parameters  
 
RPM(r/min) 150-60
WOB(KN) 156-423
Formations Medium formations with high compressive strength, such as medium-soft shale, hard gypsum, medium-soft limestone, medium-soft sandstone, soft formation with harder interbeds, etc.

Steel tooth tricone bits are also named milled tooth tricone bit, "steel" means the teeth material is steel, actually it is a type of special steels 15MnNi4Mo and the surface of steel material is hard faced by Tungsten Carbide to increase wear resistance.

Milled means the teeth is machined by milling machine, so steel tooth tricone bits have another names "mill tooth tricone bits" or "milled tooth tricone bits".

17 1/2 inches is always diameter of the first hole in deep well drilling, the formations are always soft in shallow section, so 17 1/2" is widely used in worldwide.

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