Can you customize the size and grade of the drill bits?

Yes, we accept customized sizes, grades, and surface treatments.

What certifications do your products have?

Our products are certified under ISO 9001:2008 and meet standards such as BS, GB, and DIN.

Robust DTH Drill Bits for Oil and Gas Underbalanced Drilling

Name: Robust DTH Drill Bits for Oil and Gas Underbalanced Drilling
Brand: Zhuzhou Old Craftsman Precision Alloy Co., Ltd.
SKU: 1975640721

Hunan, ChinaZhuzhou Old Craftsman Precision Alloy Co., Ltd.

US$115.00

1-9 Pieces

US$113.00

10+ Pieces

Sample price:US$500.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

6 Months

Warranty

6 Months

Model NO.

LGJ-2025091802

Certification

ISO 9001:2008

Standard

BS, GB, DIN

Surface Treatment

Polishing

Manufacturing Process

Casting

Material

Diamond

Size

Any Size Accepted Customized

Grade

Customzed

Surface

Polished or Unground

Delivery Time

15days

Applications 

Cutting Tool

Blank Tolerance

+/-0.05

Product Name

Cemented Carbide Sheet

Quality

100% G Virgin Materials.

Shiping

DHL, FedEx, TNT, UPS, EMS

MOQ

50 Kg

Transport Package

Carton

Specification

Customized

Trademark

Old Craftsman

Origin

Hunan

HS Code

82090090

Production Capacity

7000kg/Month

Key features

Customizable Specifications: Accepts custom sizes, grades, and surface treatments to meet specific project requirements.

High Efficiency Drilling: Optimized air cycles reduce energy consumption and fuel use, lowering operational costs.

Superior Durability: Built with high-quality cemented carbide inserts for wear resistance and extended service life.

Versatile Application: Suitable for various hole sizes and tough conditions, including overburden and fractured rock.

Fast Delivery Service: Experienced workers and advanced equipment ensure quick turnaround and timely shipment.

ISO 9001 Certified: Manufacturing process adheres to ISO 9001:2008 standards for consistent quality control.

Cost-Effective Solution: Tests show up to 20-30% lower drilling costs compared to alternative drilling methods.

Eco-Friendly Operation: Reduced emissions and fewer tool changes contribute to environmentally friendlier operations.

Company profile

Importers and ExportersYears of Export ExperiencePatents AwardedExhibition Experience

Zhuzhou Old Craftsman Precision Alloy Co., Ltd.

Hunan, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2017-01-09 CertifiedNearest Port: Shanghai Port; Shenzhen PortAverage Response Time: ≤1.75h

AI-Powered supplier vetting

SummaryZhuzhou Old Craftsman Precision Alloy Co., Ltd. is a limited, non-group company focused on manufacturing, sales, and import/export of cemented carbide and related metal products. It reports 3D software design, ODM, OEM, SDK, new-product, and broad customization capabilities, supported by stated R&D and service procedures. The supplier has participated in EXPOMIN 2025 and reports one-month average lead times in both peak and off-seasons. A TUV Rheinland audit report is identified as valid from May 7, 2026 to May 6, 2027, but the audit result is recorded as “0” without an explanatory interpretation. The company has nine employees and no overseas warehouse, showroom, agent, or branch. Financial figures are not assessed here, in accordance with the privacy requirement. Evidence of specific customer cases is limited.

Supplier typeThe supplier is identified as a limited company, not part of a larger group, with a combined business type covering manufacturing, sales, and import/export. Its primary product is cemented carbide products, and its stated scope also includes related metal products, tooling, molds, and mining components.

After-Sales capabilityThe supplier states that it has written procedures and follow-up records for handling customer complaints, as well as a corrective and preventive action mechanism with procedures and records. This directly supports a documented after-sales issue-handling process.

R&D capabilityThe supplier reports new products within the past year, 3D software design services, ODM and OEM capability, and an available SDK. Its company description also emphasizes technology and innovation, providing direct evidence of product-development and technical-service capability.

Production capacityThe supplier is identified as a manufacturer of cemented carbide products and related metal goods, with manufacturing included in its business scope. It reports one-month average lead times in both peak and off-seasons, five qualified suppliers for service capability, and access to Shanghai and Shenzhen ports; however, production capacity, equipment, and output volumes are not provided.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports 3D software design services, which supports its ability to develop customized solutions.