Specifications

Leading manufacturer of NQ BQ HQ series reaming shell,diamond core bit,impregnated diamond core bit,surface set diamond core bit

Reaming Shells:

Reaming shells are designed to be placed behind the core bit to ensure hole diameter is maintained and to assist core barrel stabilization. This ensures that when a new core bit is inserted into a continuing bore hole there is a good chance of reaching bottom of bore hole without reaming.

Reaming shells are produced with diamond panel pads using specially chosen diamonds of 30/40 s.p.c. Although reaming shells generally last 3 - 4 times longer than core bits they should be retired as soon as they wear under gauge otherwise it could result in an undersize bore hole diameter which can mean reaming later.

We also supply made-to-order products according to your detailed requirement.

Diameter(mm)	Size	Cutting Wings	Screw	Rock formation
	Outer Dia(mm)	Inner Dia(mm)	Height(mm)	Wing Quantity	PDC Quantity
75	75	53	150	5/6	5/6	Square
F<7medium hard(
Soft rock, coal seam drilling and grouting)
94	94	69	170	6/8	6/8
113	113	88	195	8/10	8/10
133	133	108	220	10/12	10/12
153	153	128	245	12	12

 

More Product Features:

 

Trademark:	ZM
Model NO.:	All types
Standard:	ISO9001: 2000
Origin:	Zhengzhou City, Henan Province, China.
Company:	Henan Zhongmei Drill Tool Co., Ltd.

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We can manufacture all kinds of bits and shells according to customer's special requirement.
Any requirement please contact us, we'll do the best service for you. Hope we can establish a good business relationship.