17 1/2 Inch 221IADC Steel Tooth Tricones Bits

• Customization: Available
• Type: Drill Bit
• Material: Alloy Steel, Tungsten Carbide
• Model NO.: 215 221
• Model Number: Steel Tooth Bit, TCI Bit
• Certification: API & ISO
• Bearing Type: Sealed Bearing and Non-Sealed Bearing
• Suitable Formation: Soft, Medium Soft, Hard, Medium Hard, Very Hard
• Color: Blue or Red
• IADC Code: 114~837
• Transport Package: Wooden Case
• Trademark: HJ
• Origin: China
• Production Capacity: 500

Product Description

17 1/2 inch 221iadc steel tooth tricones bits

Available sizes:From 2 7/8 to 26"  
 
 
Bearing type: sealed bearing and non-sealed bearing 
                           metal sealed journal bearing 
                           rubber sealed journal bearing 
cutting structure:The back cone and the teeth all surface is are hardfaced strengthening, improved steel tooth shape and welding materials,showing teeth higher
Application formation:Soft with low compressive strength and high drillability, such as shale, clay, salt bed and etc
 

IADC		437	517	537	617	637	737
WOB	KN/mm (bit dia.)	0.5-0.75	0.5-0.85	0.5-0.85	0.55-0.85	0.55-0.85	0.55-0.85
	Lb/in (bit dia.)	2860-4280	2860-4860	2860-4860	3140-4860	3140-4860	3140-4860
	r.p.m	70-45	70-45	70-45	70-45	60-40	60-40