What is the lead time for orders?

Peak season lead time is one month; off-season lead time is within 15 workdays.

What is the main advantage of this system?

The main advantage is high performance, including improved penetration rate and hole straightness.

How is quality control managed?

We have experienced QC staff who perform strict inspection and testing for every order before shipping.

Retrievable Overburden Concentric Casing System Symmetric Ring Bit

Name: Retrievable Overburden Concentric Casing System Symmetric Ring Bit
Brand: Zhejiang Sanrock Supply Management Co., Ltd.
SKU: 2046481745

Zhejiang, ChinaZhejiang Sanrock Supply Management Co., Ltd.

US$1,280.00-1,307.00

1 Piece

Product profile

After-sales Service

Online Technical Services

Warranty

Online Technical Services

Certification

CE, ISO 9001:2015

Model NO.

194mm-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}

178mm

Casing Shoe I.D

164mm

Casing Tube O.D

194mm

Maximum Reaming O.D

208mm

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

Simultaneous Drilling and Casing: Designed to drill and case a hole simultaneously through unstable ground conditions.

High Penetration Rate: Full face head design significantly improves penetration rate and hole straightness.

Effective Sealing System: Internal flushing grooves and built-in casing shoes minimize disruption of surrounding soil.

Retrievable Design: Drill string with pilot bit is retrieved by reverse rotation; ring bit stays in hole.

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

Durable Material: Constructed from Tungsten Carbide and Alloy Steel for high performance in soft to hard formations.

Flexible Shank Compatibility: Compatible with DHD, QL, SD, and Mission shanks for various hammer sizes.

Certified Quality: Products are CE and ISO 9001:2015 certified ensuring strict quality control.

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: ≤2.84hTerms 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.