Can the casing size be customized?

Yes, casing sizes such as 114, 127, 140, etc., can be customized based on specific customer needs.

What is the quality control process?

We have an experienced QC team that performs strict inspection and testing for every order before shipping.

DTH Drilling Tools Concentric Overburden Casing Drilling System

Name: DTH Drilling Tools Concentric Overburden Casing Drilling System
Brand: Zhejiang Sanrock Supply Management Co., Ltd.
SKU: 2046376145

Zhejiang, ChinaZhejiang Sanrock Supply Management Co., Ltd.

US$689.80-708.60

1 Piece

Product profile

After-sales Service

Online Technical Services

Warranty

Online Technical Services

Certification

CE, ISO 9001:2015

Model NO.

146mm-Concentric Casing system

Standard

AISI, JIS

Surface Treatment

Spray-Paint

Manufacturing Process

Forging

Material

Tungsten Carbide, Alloy Steel

Shank

DHD, Ql, SD, Mission

Bit Diameter{Button Lncluded}

123.5mm

Casing Shoe I.D

116mm

Casing Tube O.D

146 mm

Maximum Reaming O.D

156mm

Application

Coal Mining,Quarry Drilling ,Construction Works

Formation

Soft,Medium and Hard Formation

Different Structures

Concentric System with Ring Bits, Wing and Blocks

Hammer Size

4", 5", 6", 8", 10", 12"

Casing Size

114/ 127/140/146/178/194/219/254/273/325mm

Advantage

High Performance

Transport Package

with Wooden Case Outside, or as Per Your Request

Trademark

SANROCK

Origin

Zhejiang, China

Production Capacity

8000pieces/Month

Key features

Concentric Drilling System: Simultaneously drills and cases holes through unstable ground conditions for improved efficiency.

High Penetration Rate: Full face head design with sacrificial or reusable ring bits significantly improves drilling speed and straightness.

Effective Sealing Design: Internal flushing grooves and built-in casing shoes minimize disruption to the surrounding drill hole.

Wide Application Range: Suitable for water wells, geothermal wells, coal mining, quarry drilling, and construction works.

Multiple Hammer Sizes: Available in 4, 5, 6, 8, 10, and 12-inch hammer sizes to match various drilling requirements.

Certified Quality: Products are CE and ISO 9001:2015 certified, ensuring high performance and reliability.

Customizable Specifications: Shank types (DHD, QL, SD, Mission) and casing sizes can be customized based on specific customer needs.

Durable Materials: Constructed from Tungsten Carbide and Alloy Steel with spray-paint surface treatment for longevity.

Company profile

High Repeat Buyers ChoiceImporters and ExportersFull CustomizationFlexible Customization

Zhejiang Sanrock Supply Management Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2020-10-16Nearest Port: ningbo, qingdaoAverage Response Time: ≤2.48hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, FAS, CIP, CPT

AI-Powered supplier vetting

SummaryZhejiang Sanrock Supply Management Co., Ltd. is a China-based limited company identified as both a trading company and manufacturer/factory, offering mining machinery and related mechanical and electronic equipment. It reports strong export orientation, with 90% of total sales from exports, self-operated import/export rights, and five years of export experience. Customization is available across sample-based, design-based, full, minor, and flexible formats. However, the supplier is not identified as a professional technical supplier and does not provide 3D software design services. Evidence is insufficient for certification holding, financial credibility, production capacity, and customer cases. Service procedures for supplier approval, corrective actions, and complaint handling exist but lack written records; inventory, overseas warehouse, and overseas showroom capabilities are explicitly absent.

Supplier typeThe supplier is a limited company in Zhejiang, China, classified as both a trading company and manufacturer/factory. Its stated scope covers mining machinery, mechanical equipment, electronic products, supply-chain services, warehousing, and consulting activities.

After-Sales capabilityThe supplier has procedures for handling customer complaints and corrective/preventive actions, but no written records are available. It also explicitly lacks in-stock service capacity, overseas warehouse capability, and overseas showroom capability, while the effectiveness of after-sales execution is not demonstrated.

R&D capabilityThe supplier is explicitly not a professional technical supplier and does not provide 3D software design services. Although it offers several customization formats, the records do not establish research, development, or advanced innovation capability.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. This provides direct evidence of broad customization service capability, although it does not establish 3D design support.