Are the drill bits suitable for stainless steel?

Yes, this 29-piece set is designed for drilling holes in iron and stainless steel.

What is the hardness of the drill bits?

The hardness ranges from HRC 61 to 66.

Do you have ISO certification?

Yes, our management system is certified under ISO9001:2015.

Hard 29PCS Twist Concrete Drill Bit Power Tools Set for Iron Stainless Steel

Name: Hard 29PCS Twist Concrete Drill Bit Power Tools Set for Iron Stainless Steel
Brand: Jiangsu Yaofeng Tools Co., Ltd.
SKU: 2145915785

Jiangsu, ChinaJiangsu Yaofeng Tools Co., Ltd.

US$6.50-20.00

100 Pieces

Product profile

Customization

Available

Customized

Standard

DIN 338

Model NO.

CJDH-2902

Type

Twist Drill Bit

Material

High Speed Steel

Usage

for Iron Stainless Steel

Warranty

3 Years

Use

Metal Drilling

Process

Roll Forged / Full Ground

Shank

Straight

Hardness

HRC 61 - 66

Customized Support

OEM, ODM

Certification

ISO9001

Brand

Jg or OEM

Angle Point

118 or 135

Working Length (mm)

Customized

Product Name

29PCS Drill Bit Set

Application

Drilling Holes

Surface Finishing

Black, White, Black & White, Amber ,Tin Coated

Transport Package

Metal Box, Plastic Box, Wooden Case and So on

Specification

29pcs

Trademark

JG/OEM

Origin

Jiangsu, China

Production Capacity

10000 Piece/Pieces Per Day

Key features

High Speed Steel Material: Constructed from durable High Speed Steel for superior performance.

Comprehensive 3-Year Warranty: Covers defects with a full 3-year warranty period for peace of mind.

OEM and ODM Support: Full customization support including OEM and ODM services available.

DIN 338 Standard Compliance: Manufactured strictly according to DIN 338 international standards.

ISO9001 Certified Quality: Production process certified under ISO9001:2015 management system.

Flexible Customization Options: Offers full, minor, and sample-based customization for specific needs.

100% Finished Product Inspection: Every unit undergoes visual and functional inspection before shipping.

Fast Lead Time: Average lead time within 15 workdays for both peak and off-season.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExperienced Team

Jiangsu Yaofeng Tools Co., Ltd.

Jiangsu, 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. CertifiedExport Year: 31 Years CertifiedNearest Port: Shaanghai PortAverage Response Time: ≤11.72h

AI-Powered supplier vetting

SummaryThe supplier is identified as a combined manufacturing and sales company producing diamond saw blades, alloy saw blades, woodworking saw blades, twist drills, hardware tools, and accessories. It reports 12 production lines, inventory capability, written service-capability assessment procedures, and lead times within 15 workdays in both peak and off-peak seasons. Its export-related evidence includes self-operated import/export rights, 31 years of exporting, and 90% of sales from exports. The supplier offers broad customization, 3D design, ODM, and OEM services, but has no available R&D audit documentation, no new products in the past year, and no SDK. Manufacturing controls show gaps: no valid contracts with affiliated subcontractors, no continuous quantity reconciliation, and no outsourcing SOP. Evidence is insufficient for certification holding, financial credibility, and customer cases. Overseas service infrastructure is also limited, with no overseas warehouse, showroom, agents, branches, or offline...

Supplier typeThe supplier is classified as a combined company, with a stated business scope covering manufacturing and sales of diamond saw blades, alloy saw blades, woodworking saw blades, twist drills, hardware tools, and accessories. This directly supports classification as a manufacturer and seller of hardware and cutting-tool products.

After-Sales capabilityTechnical engineers are responsible for technical support during production and after-sales service, and the supplier has in-stock service capability, written service-capability assessment procedures, and uniformly followed finished-product inspection instructions. However, it has no overseas warehouse, showroom, agents, or branches, so the evidence supports technical and product-service capability but not extensive overseas after-sales infrastructure.

Production capacityThe supplier reports more than 10 production lines, specifically 12 lines, inventory capability, lead times within 15 workdays in both peak and off-season, and uniformly followed finished-product inspection instructions. Conversely, it lacks valid contracts with affiliated subcontractors, continuous batch quantity reconciliation, and an outsourcing SOP, indicating strong stated capacity but weaknesses in manufacturing governance and control.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization, together with 3D software design services. This is direct evidence of broad product customization capability.

Client casesThe supplier states that it provides OEM services for well-known brands, which is evidence of brand-related customer experience. However, no customer names, project examples, or verifiable case details are provided, so the breadth and quality of customer cases cannot be fully assessed.