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1.Certified by API, 2.Longer drilling intervals, 3.Best quality, 4.with Sliding metal sealed bearing, 5.Best services - details see: https://www.machineto.com/17-1-2-api-spec-7-tricone-drill-bit-hard-rock-tricone-drill-bit-for-water-well-drilling-10317691

Hejian Deris Petroleum Drilling Equipment .

1. Specifications of our products:

TCI bits

1,Soft formations(417,437,517,537)

Features large chisel-shaped inserts to provide the highest penetration rate in the softest formations such as shales, clays, limestone and sands.

2,Soft to medium formations(617,637)Designed to drill effectively in formations such as hard limestone, dolomite, hard sands, and other formations with hard cherty.

3,Medium to hard formations(737)

For extremely hard formations such as chert, granite, flint, and taconite. Features short, closely-spaced inserts to ensure maximum penetration rate and wear resistance

Milled tooth bits

1,Soft formations(114-117)

These bits are designed to drill the softest formations such as soft shales,red beds, and clays, with high durability and maximum penetration rates.

2,Soft to medium formations(121,124,126,134,136,137)

These bits are designed to drill formations such as shales, medium soft limestone, Medium sandstone and other formations with intermittent hard streaks.

3,Medium to hard formations(213,214,215,217)

These bits are designed to drill formations such as hard sandstone, dolomite, and broken formations with hard cherty streaks

2. Main features:

1. Cutting Structure of this type sealed and non-sealed tci tricone bits :

The wear-resistance of teeth is enhanced with premium tungsten carbide hard facing on the tooth surfaces for steel tooth bit.

2. Gauge Structure of this type tci tricone rock bits:

Multiple gauge protection with gauge trimmers on the heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hard facing on the shirttail increases gauge holding capability and bearing life.

3. Bearing Structure of this type tci tricone rock bits :

High precision roller bearing with two thrust faces. Ball locks the cone. Thrust faces hard face with wear resistant alloy. Abrasion resistance and seizure resistance of the bearing are improved.

api spec 7 tricone drill bit details:

Place of Origin:Hebei China (Mainland)	Brand Name:Kingdream	Model Number: HA114 124 127 HJ417 437 447 517 537 547 617 637 etc
Type:Center Drill Bit	Material:High Carbon Steel	Use:Well Drilling
certification:API	machine type:drilling tool	peocessing type:forging
IADC:HJ417 437 447 517 537 547 617 627 637	type:drill bit	certificate:API
market:Canada, USA,Middle east ,Africa,Europe,...	blades:3 to 8 blades	fromation:soft to hard formation
application:construction, geothermal,

Specifications

1.Sizes rang from 3 7/8'' -26''
2.Cover all all IADC code
3.Reliable quality and best price

Main features

1.Cutting Structure of this type sealed and non-sealed tci tricone bits :

The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit.

2.Gauge Structure of this type tci tricone rock bits :

Multiple gauge protection with gauge trimmers on the heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.

3.Bearing Structure of this type tci tricone rock bits :

High precision roller bearing with two thrust faces. Ball lock the cone.Thrust faces hardface with wear resistant alloy. Abrasion resistance and seizure resistance of the bearing are improved.