8 1/2′ ′ Inch 215.9mm Drill Head Bit for Drilling Rod

• Type: Drill Bit
• Material: Alloy Steel, Tungsten Carbide
• 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
• Model NO.: iadc code
• Color: Blue or Red
• IADC Code: 114~837
• Transport Package: Wooden Case
• Specification: according requirements
• Trademark: HJ
• Origin: China
• HS Code: 8207191
• Production Capacity: 500

Product Description

TCI tricone bit
Product item: TCI Tricone drill bit  
Sizes: 3 7/8''~32''  
IADC code:417,437,517,537,617,617,637,737,etc.
Bearing type: sealed bearing,open bearing, roller bearing

1. Reliable and stable sealing structure, metal seal and rubber seal optional.
2. The palm bearing surface is hard-coated with a hard alloy layer, and the roller bearing
     is silver-plated,which improves the bearing capacity and the resistance to seizure.
3. Adopt high-strength and high-toughness cemented carbide teeth to improve the impact
    resistance of teethand reduce the rate of broken teeth.
4. shirttail and leading edge hardfacing
5. Leg protection with tungsten carbide compacts