7 1/2'' 190.5mm Iadc Code 537 Three Roller Cone Bit Tricone Drilling Bits

 Bit Size

7 1/2'’,190.5mm

 IADC Code

 537

Series

HR

Tooth type

TCI/tungsten carbide insert

 Connection

 4 1/2 API REG PIN

Bearing

rubber sealed bearing

 Nozzle

 three jet nozzles

 Rotary Speed(rpm)

 120~50

 Weight on Bit(KN/MM)

0.45~1.0

Application

water well,oil   well,HDD,exploration,etc

Formation

Soft to medium formation with low compressive   strength,such as medium soft shale,medium soft limestone,medium soft   sandstone,etc.

(KN/MM)

(r/min)

(Bit Dia)

116  117

0.35~0.8

150~80

Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk etc.

136  137

0.35~1.0

120~60

Soft to mesium soft formations with low compressive strength and high drillability.such as medium soft shale,hard gypsum,medium soft limestone.medium soft sandstone soft formation with harder nterbeds,ect.

216  217

0.4~1.0

100~60

Medium hard formations with high compressive strength,such as medium soft shale,hard gypsum,medium soft limestone,medium soft sandstone,soft formation with harder interbeds ect.

246  247

0.4~1.0

80~50

Medium hard formations with high compressive strength,such as abrasive shale.limestone,sandstone,dolomite,hard gypsum,marble,ect.

417  437

0.35~0.9

150~70

Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk,gypsum,salt,soft shale,soft limestone,etc.

447

517  527

0.35~1.0

140~60

Soft formations with low compressive strength and high drillability,such as mudstore,gypsum,salt,soft shale.soft limestone,ect.

537  547

0.45~1.0

120~50

Soft to medium formations with low compressive strength,such as medium soft shale,medium soft limestone,medium soft sandstone,medium formation with harder and abrasiver interbeds,ect.

617  627

0.45~1.1

90~50

Medium hard formations with high compressive strength,such as hard shale,limestone,sandstone,dolomite,ect.

637

0.5~1.2

80~40

Hard formations with high compressive strength,such as sandstone,limestone,dolomite,hard gypsum,marble,ect.

Wood Box

Fumigation Tray if necessary

Other special package can be applied according to customer's need  

Delivery

Prepared to deliver within 1 week, if in stock

Depends on order quantity, when out of stock

Transportation:By sea or air