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MadeInChina.com > Products > Tools & Hardware > Drilling Tools > Drill Bit
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12 1/4" Triconic Drill Bits with Tungsten Chisel Type Teeth

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Min Order 1 Piece
Availability In Stock
Shipping From Anhui, China
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Model NO.:
12 1/4
Customized:
Non-Customized
Standard:
API
Length:
Taper-length
Type:
Center Drill Bit
Material:
High Carbon Steel
Usage:
Well Drilling, Masonry Drilling
Trademark:
ROSCHEN
Transport Package:
Wooden Box
Specification:
6 1/2", 8 5/8", 9 7/8", 12 1/4"
Origin:
China
HS Code:
84314320
Product Description


Roschen is a professional supplier of drilling tools. With years of study and refining of the introduced technology, our products own better characters of service and ranges of application.Mainly used for oil and gas,mining,geothermal,construction and so on.Our products have been sold all over the world, including the United States, England, Canada, Brazil, Russia, Italy, Iran, Saudi Arabia, Korea, India, and Poland and so on.    


2. Parameters



 
IADC CODE SELECTION LIST
IADCWOBRPMApplication
(KN/mm)(r/min)
111/114/1150.3-0.75200-80very soft formations with low compressive strength and high drill ability, like clay, mudstone, chalk
116/1170.35-0.8150-80very soft formations with low compressive strength and high drill ability, like clay, mudstone, chalk
1210.3-0.85200-80soft formations with low compressive strength and high drill ability, like mudstone, gypsum, salt, soft limestone
124/125180-60
1310.3-0.95180-80soft to medium formations with low compressive strength, like medium, soft shake, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds
136/1370.35-1.0120-60
211/2410.3-0.95180-80medium formations with high compressive strength, like medium, soft shake, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds.
216/2170.4-1.0100-60
246/2470.4-1.080-50medium hard formation with high compressive strength, like hard shale, limestone, sandstone, dolomite
3210.4-1.0150-70medium abrasive formations, like abrasive shale, limestone, sandstone, dolomite, hard gypsum, marble
3240.4-1.0120-50
437/447/4350.35-0.9240-70very soft formations with low compressive strength and high drill ability, like clay, mudstone, chalk, gypsum, salt, soft limestone
517/527/5150.35-1.0220-60soft formations with low compressive strength and high drill ability, like mudstone, gypsum, salt, soft limestone
537/547/5350.45-1.0220-50soft to medium formations with low compressive strength, like medium, soft shake, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds
617/6150.45-1.1200-50medium hard formation with high compressive strength, like hard shale, limestone, sandstone, dolomite
637/6350.5-1.1180-40hard formation with high compressive strength, like limestone, sandstone, dolomite, hard gypsum, marble
Note: Above limitts of WOB and RRPM should not be used simultaneously
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