High Quality Concentric Casing System Drill Bits 178mm

• Customized: Customized
• Standard: API
• Length: Taper-length
• 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.: 178
• Type: Center Drill Bit
• Material: High Carbon Steel
• Usage: Well Drilling
• Product Name: Concentric Casing Systems Drilling Tools
• Casing Tube O.D.: 178mm
• Bit Diameter: 157mm
• Casing Shoe I.D.: 154mm
• Maximum Reaming O.D.: 194mm
• Hammer Style: 5"
• Transport Package: Standard Export Packing
• Specification: 146-377mm
• Trademark: HW
• Origin: China
• HS Code: 8207501000
• Production Capacity: 3000pieces/Month
• Package Size: 3.10cm * 3.10cm * 0.90cm
• Package Gross Weight: 30.000kg

Product Description

Product Description

The Symmetric/Concentric drilling system is designed to drill and case a hole simultaneously through unstable ground conditions. The driver bit incorporated with a satisficial ring or reusable ring makes a full face head design which significantly improves the penetration rate and hole straightness of drilling. The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, and thus minimizing the disruption of the surrounding of the drill hole.

Product Parameters

 

model	casing tube O.D./mm	bit diameter/mm	casing shoe I.D./mm	maximum reaming O.D. /mm	hammer style
146	146	123.5	116	156	4"
168	168	146	140	184	5"
178	178	157	150	194	5"
183	183	160	152	198	5"
194	194	178	164	208	6"
219	219	203	192	234	6-7"
245	245	217	205	260	6-8"
273	273	246	233	291	8"
325	325	297	282	340	8-10"
377	377	351	332	405	10-12"

Detailed Images:

Applications

Scope of application: suitable for small and medium grouting holes in water wells, geothermal wells, short shrinkage holes, buildings, dams, and port projects. If you have any questions about the product, you can contact me and I will answer it for you

Company Profile

Jining Hengwang Mining Machinery Co., Ltd. which belong to Shandong Hengwang Group Co., Ltd., is located in Shiqiao Industrial Park, Jining City, Shandong Province, China. Our Group occupies an area of about 40,000 square meters.It is a comprehensive enterprise integrating piling and drilling rig design, manufacture and installation.

FAQ

1. Q: Are you factory or trader?

A: We are factory, has passed ISO, contact me showing you the factory;

2. Q: What kind of drilling rigs you have?
A: We mainly did hydraulic driling rig for soils, pneumatic drilling rig for rocks, DTH drilling rig, big diameter drilling rig, engineering drilling rig, geological exploration drilling rig etc, so you can tell me your requirements, would recommend you the suitable one.

3. Q: What certificate you have?
A: CE, ISO, BV, TUV

4. Q: Do you offer training?
A: Each model we have supplementary instruction mannual, video for installation and operation, calling instruction, and working site instruction.

5. Q: How about the warranty?
A: We machine warranty is 1 year, used famous brand parts help you find locally; Also 3 spare parts center guarantee you get the spare parts in time.