Rotary Drilling Rock Bucket drill clay bucket foundation piling: Unimate driiling hard rock core barrels for rotary drilling

2015年12月3日星期四

Unimate driiling hard rock core barrels for rotary drilling

Core Barrels

Core barrels are used to cut an annular ring in rock or concrete or reinforced concrete. The centre core of the rock or concrete is usually crushed with rock auger. The most important advantage of a core barrel is that it assists to concentrate the torque and crowd force on a small ring of cutting teeth.

Type:1- Core Barrel with Bullet Bits

2- Core Barrel with Roller Bits

Cutting Diameter Range:600~2500mm

Drilling Dia（mm）	Shell Dia（mm）	Shell Length（mm）	Shell Thickness（mm）
600	550	1200	16
700	650	1200	16
800	700	1200	16
900	800	1200	16
1000	900	1200	16
1100	1000	1200	16
1200	1100	1200	16
1250	1150	1200	16
1300	1200	1200	16
1400.	1300	1200	16
1500	1400	1200	16
1600	1500	1200	16
1700	1600	1000	20
1800	1700	1000	20
2000	1900	800	20
2200	2100	800	20
2500	2400	800	20