Double Casing Drilling Tools Crown Bit and Percussion Bit

• Type: Bearing
• Application: Tunnel Boring Machine
• Certification: ISO9001: 2000
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: Double Casing Drilling Tools
• Condition: New
• Usage: Water Well, Geothermal Drilling
• Transport Package: Wooden Package
• Specification: steel
• Trademark: BESTLINK
• Origin: China
• HS Code: 82071990
• Production Capacity: 50000 PCS / Month
• Package Size: 20.00cm * 25.00cm * 25.00cm
• Package Gross Weight: 9.500kg

Product Description

Double Casing System Casing Crown Bit and Percussion Bit

 

Application Range(DTH hammer type drilling inside the case) It can be widely used in drilling for grouting holes in projests such as cofferdam, foundation and geothermal well and etc.

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

 

outer dia	reamed dia	inner dia	thread	drill rod	drill bit dia	thread
(mm)	(mm)	(mm)	mm	mm	mm
118	125	88	104.5	76	83	R56
133	140	108	122	76	102	R56
146	152	120	134	89	116	R78
168	172	133	146.5	114	128	R83
216	225	178	203	114	165	R102