Double Casing/ Head Rotary System

• Customized: Customized
• Length: Jobber-length
• Type: Double Head Rotary Percussive
• Material: High Speed Steel
• Usage: Well Drilling
• Assembly: Crown Opener Bit and Inner Opener Bits
• Model NO.: Double Casing/ Head Rotary System
• Casing Outer Diameter: 118-216mm
• Features: Hardening Treatment of The Parts Surface with Long
• Transport Package: Wood Case
• Specification: SGS, CE, ISO
• Trademark: Prodrill
• Origin: China
• HS Code: 82071990
• Production Capacity: 5000 PCS Per Month

Product Description

Features:
1.Hardening treatment of the parts surface with longer operating life and excellent anti-wear properties
2.Structure optimization Strengthen the structural
3.Superior performance Smooth with high efficiency

Double Casing Drilling Tools
Double head rotary percussive drilling

Application Range
Grouting holes in projects such as cofferdam, foundation and geothermal well and well, etc.
Working Theory

Two Independent Rotary Heads
Separately drives the outer casing and the inner drill string and are typically mounted on separate sleds which can be adjusted independently to control the position of the inner string in relation to the casing bit.
Casing bits for dual rotary systems are ring bits with tungsten carbide inserts.
The carbide insert is typically a scraping type.

Male/female friction welded double-start rotary percussive casing
 

Features:
1.Hardening treatment of the parts surface with longer operating life
and excellent anti-wear properties
2.Structure optimization Strengthen the structural
3.Superior performance Smooth with high efficiency