What is the lead time for production?

The average lead time is one month for both peak and off-peak seasons.

What are the suggested RPM ranges?

Suggested RPM ranges vary by bit type, from 1500-2500 RPM for larger bits up to 4500 RPM for smaller plane bits.

Diamond Drilling Core Bits-China Diamond Drill Bit for Sandstone and Limestone Drilling

Name: Diamond Drilling Core Bits-China Diamond Drill Bit for Sandstone and Limestone Drilling
Brand: Wanlong Times Technology Co., Ltd.
SKU: 775398805

Fujian, ChinaWanlong Times Technology Co., Ltd.

US$4.26

10 Pieces

Product profile

Customization

Available

Type

Core Drill Bit

Material

Diamond

Model NO.

diamond drilling core bits

Usage

Masonry Drilling, Drilling

Kind

Diamond Drill

Manufacturing Arts

Sinter

Product Name

Crown Bits

Dimension(mm)

20-35

Usable Length(mm)

47-100

Suggested R. P. M

3000-3500

Transport Package

According to Customer Request

Specification

Dimension: 20-35mm diamond drilling tools

Trademark

wanlong

Origin

Quanzhou

Production Capacity

100, 000, 000 PCS/Year

Key features

High Efficiency & Long Life: Features high efficiency, no-chipping performance, and extended service life for masonry drilling.

Full Customization Available: Offers full customization, minor customization, and flexible customization from samples or designs.

Wide Dimension Range: Available in various sizes from 6.0mm to 150mm for different drilling requirements.

ISO & CE Certified: Manufactured under ISO9001:2015, ISO45000:2018, ISO14001 standards with CE product certification.

100% Quality Inspection: All finished products undergo 100% visual inspection with strict quality control protocols.

Flexible Payment Terms: Accepts LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

Low MOQ Requirement: Minimum Order Quantity is 1 piece, suitable for small batch orders.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceExhibition ExperienceOverseas Services

Wanlong Times Technology Co., Ltd.

Fujian, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 28 Years CertifiedNearest Port: Xiamen PortAverage Response Time: ≤1.94h

AI-Powered supplier vetting

SummaryThe supplier manufactures and sells non-ferrous metal alloys, mechanical equipment, special equipment, jewelry-related products, and oil-drilling equipment. It reports documented supplier-service, corrective-action, and complaint-handling procedures, in-stock capability, ODM and multiple customization options, and participation in the Marmomacc Shower trade show. Management-system certifications include ISO9001:2015, ISO45001:2018, and ISO14001, with CE product-certification capability. Its R&D function has 28 engineers, 26 years of total engineer experience, and available design audit documentation, but no new product was reported in the past year and no SDK is available. The supplier does not provide OEM services for popular brands, lacks overseas warehouses, showrooms, agents or branches, and reports no valid manufacturing-capacity contract with related subcontractors. Customer-specific case evidence is not provided.

Supplier typeThe stated business scope covers manufacturing and sales of non-ferrous metal alloys, mechanical equipment, special equipment, jewelry and ornaments, and oil-drilling special equipment. This identifies the supplier as a diversified manufacturer and seller rather than a service-only supplier.

CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, and ISO14001 certifications, plus CE product-certification capability. However, the general supplier-management-system certification field is recorded only as “Others,” so the exact certification status in that field is not specified.

After-Sales capabilityThe supplier has documented and followed procedures for customer complaints, corrective and preventive actions, and effective supplier service capability. It also reports in-stock service capability, but has no overseas warehouse, showroom, overseas agent, or branch, which limits locally supported after-sales coverage.

R&D capabilityThe supplier has 28 R&D engineers, 26 years of total R&D-engineer experience, available design input/output, review, verification and validation documentation, and ODM capability. However, it reports no new product in the past year and no available SDK, indicating limitations in recent product innovation and software-development support.

Production capacityThe supplier reports more than 10 production lines, annual production output, in-stock capability, and one production line under the manufacturing-capacity entry. It lacks a valid contract with related subcontractors, so subcontracted manufacturing arrangements are not formally evidenced.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization, together with ODM services. These statements directly support broad customization capability.