DHD350-140-168 Concentric Casing System High Quality

• Customization: Available
• Customized: Customized
• Length: Request
• Model NO.: DHD350-140-168
• Type: Casing System
• Material: Tungsten Carbide
• Usage: Well Drilling, Mining
• Inserts Design: Spherical; Ballistic; Parabolic
• Use: Well Drilling,Coal Mining,Quarry Drilling
• Product Name: Casing System
• Face Design: Flat;Convex;Concave
• Package: Wooden Box or as Customers Inquire
• Casing Od.: 219mm
• Casing Shoe Min ID: 115mm
• Transport Package: Wooden Case
• Specification: Forging
• Trademark: Glorytek
• Origin: Beijing, China
• Production Capacity: 2000 Pieces Per Month
• Package Size: 1500.00cm * 300.00cm * 100.00cm
• Package Gross Weight: 70.000kg

Product Description

Product Description

A.Drill in overburden unstable rock
B.One step to drill and follow casing
C.Flexible to open or close
 

 

Drill Bit Concentric Overburden Drilling System With Rings
Overburden drilling systems are widely used in a variety of applications from well drilling and minipilling to rock anchoring and site investigation. 
This is easily removed to allow for bit are sharpening or replacement. It is the most economical solutions because its ingenious reaming wing the bit is retrievable can be used at the next hole.

>>The casing shoe is welded to the casing. 
>>The pilot bit and ring bit are locked together by the bayonet coupling. They drill a hole large enough to allow the casing to be pulled into the hole. 
>>The pilot bit and ring bit rotate with the drill string while the casing shoe and casing do not rotate. 
>>When required depth is reached, the pilot bit is unlocked by a slight reverse rotation of the drill string. 
>>The drill string and pilot bit will be retrieved through the casing, the ring bits and casing shoe will be left in the hole for permanent casing system.
 

Product Parameters

 

Type	Casing OD (mm)	Casing Min ID (mm)	Reaming Diameter (mm)	Casing Shoe Min ID (mm)	Pilot Bit Max OD (mm)	DTH Hammer
GL70A-70-89	89	77	98	71	70	GL70A
GL90-85-108	108	94	112	86	85	GL90/GL90-I
GL335-85-108	108	94	114	88	86	GL335
GL335-90-114	114	98	127	91	90	GL335
GL335-100-127	127	114	136	101	100	GL335
GL110-120-146	146	130	156	121	120	GL110
GL4.5-120-146	146	130	156	121	120	GL4.5
GL340-120-146	146	130	156	121	120	GL340
GL350-140-168	168	152	180	142	140	GL350/355/355K
GL350-145-178	178	160	183	146	145	GL350/355/355K
GL350-150-183	183	165	190	152	150	GL350/355/355K
GL360-186-219	219	194	240	187	186	GL360
GL360-194-219	219	194	240	195	194	GL360
GL360-203-219	219	203	240	206	203	GL360
GL380-203-219	219	205	240	206	203	GL380
GL380-203-245	245	232	266	206	203	GL380
GL380-241-273	273	260	305	244	241	GL380
Code annotation of casing reamer bit as bellow
Example: GL350-140-168
GL350(Equal to DHD350)=Hammer type, 140= Pilot Bit Max OD (mm), 168=O.D of casing pipe(mm)

Detailed Photos

 

Feature

 

• Complete types of drilling tools suitable for casing tubes with various diameters;
• Good stability and reliability granted by premium alloy steel material;
• Cost-effectiveness realized by mass production.

Related product

-Middle-low/high air pressure DTH hammers & bits
-Big hole high air pressure DTH hammer using in water well, oil, gas and construction drilling.
-Eccentric overburden drilling system
-Hole opener bit
-Shank adapter, coupling sleeves and all kinds of adapters

 

Company Profile

 

Glorytek Industry (Beijing)Co.,Ltd.,

Located in Beijing,China, is an integrated corporation specialized in manufacturing and exporting top quality drilling equipment and drilling parts for decades. We are supported and assisted by a highly experienced team of designers and engineers that enable us to complete all the assigned projects successfully as per the specified requirement from our clients.

 

Our products are widely used in the scope of mining, water well drilling and exploration, anchor grouting project, side slope protection engineering, oil and gas engineering,underwater rock drilling & blasting operations of seaport channel, hydropower project, national defense projects ect.