Casing Shoe Hammer Drill Miningwell Eccentric Rings Odex Drilling System

• After-sales Service: Video Technical Support, Online Support, Spare PAR
• Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
• Standard: AISI, ASME, BS, ANSI, JIS, GB, GOST, ASTM, DIN
• Surface Treatment: Without Processing
• Manufacturing Process: Forging
• Material: Carbon Steel
• Model NO.: P114/9-84
• Od of Casing Pipe(mm): 114
• ID of Casing Pipe(mm): 94
• Wall Thickness (mm): 10
• Center Drill Bit Most Large Outer Diamet: 94
• Perforated Size (mm): 126
• Allow Pass Drill Bit Diameter (mm): 84
• Matching DTH Hammer: Cop34/DHD3.5/MW3.5
• Weight (Kg): 10
• Transport Package: Wooden Boxes
• Specification: 25kg
• Trademark: Miningwell
• Origin: Zhejiang China
• Production Capacity: 30PCS Per Month

Product Description

Dminingwell Concentric casing system tube symmetric concentric overburden casing drilling system rock drilling bit concentric bit

Size	OD of casing pipe(mm)	ID of casing pipe(mm)	Wall thickness (mm)	Center drill bit most Large outer diameter (mm)	Perforated size (mm)	Allow pass drill bit diameter (mm)	Matching DTH Hammer	Weight (KG)
P114/9-84	114	94	10	94	126	84	COP34/DHD3.5/MW3.5	10
P127/10-93	127	107	10	105	142	93	COP34/DHD3.5/MW3.5	16
P140/10-97	140	120	10	116	161	97	COP44/DHD340(MW4)/SD4/QL40	21
P146/10-110	146	126	10	124	165	110	COP44/DHD340/(MW4)/SD4/QL40	22
P168/12.7-127	168	142.6	12.7	141	188	127	COP54/DHD350(MW5)/SD5/QL50/M50	27
P178/12.7-131	178	152.6	12.7	150	196	131	COP54/DHD350(MW5)/SD5/QL50/M50	32.5
P194/12.7-145	194	168.6	12.7	166	214	145	COP64/DHD360(MW6)/SD6/QL60/M60	42.5
P219/12.7-170	219	193.6	12.7	191	243	170	COP64/DHD360{MW6)/SD6/QL60/M60	58
P245/12.7-195	245	219.6	12.7	214	268	195	COP84/DHD380/(MW8)/SD8/QL80	78
P254/12.7-203	254	228.6	12.7	224	276	203	COP4/DHD380(MW8)/SD8/QL80	84.5
P273/12.7-223	273	247.6	12.7	241	298(305)	223	COP84/DHD380(MW8)/SD8/QL80	100
P325/12.7-276	325	299.6	12.7	292	350	276	COP84/DHD380(MW8)/SD8/QL8O	135
P406/12.7-350	406	380.6	12.7	377	442	350	DHD112(MW12)/QL120/SD12/NUMA120	280
P508/12.7-416	508	482.6	12.7	478	545	416	QL200/SD18/NUMA180/MW18	522
P560/12.7-475	560	534.6	12.7	528	595	475	QL200/SD18/NUMA180/MW18	620
P610/12.7-513	610	584.6	12.7	558	645	513	QL200/SD18/NUMA180/MW18	710

 

1. Structure of concentric casing system
Casing shoe: Used to connect the casing tube.
Ring bit: Used to connect the pilot bit and casing shoe.
Pilot bit: The major structure of concentric casing system,with buttons and flushing grooves, etc.

2. Operation procedure

1. Concentric system drilling through overburden
2. Reverse rotation of the hammer and pull out the pilot bit.
3. Replace the pilot bit to normal bit to continue drilling
 

3. Scope of application:
Applicable to overburden with complex dry geological conditions, such as pebbles, cracks, dry rocks, boulders, construction backfill waste, etc. Drilling holes at any angle with high straightness
The maximum hole depth can reach 150 meters

4. Structural advantages:
Straightness: Under different geological structures, the straightness of hole formation can be guaranteed
Adaptability: In complex geological structures, such as pebbles and construction waste, the drilling efficiency can be guaranteed.
Less Torque: Less torque compared to eccentric drilling system.
Easy to Unlock and Relock: Easy to relock after unlocking.
Drilling at any angle: the concentric tubular drilling tool can drill in vertical, horizontal and inclined states.
Environmental protection: Compared with eccentric drilling tools, it is more suitable for construction in urban areas because of its stable drilling, low vibration and low noise.