What is the warranty and after-sales policy?

We provide a 1-year warranty for equipment and 2 years for gearboxes (excluding quick-worn parts). We offer free component replacement within warranty. Out of warranty, we provide video support or dealer recommendations.

Are there discounts for bulk orders?

Discounts are based on order quantity. We also hold irregular promotions such as company anniversaries, mid-year sales, and holiday promotions.

Special Length 400mm Diamond Core Bit a Rod Thread for Deep Drilling

Name: Special Length 400mm Diamond Core Bit a Rod Thread for Deep Drilling
Brand: Hangzhou Vleader Tools Co., Ltd.
SKU: 2279486815

Zhejiang, ChinaHangzhou Vleader Tools Co., Ltd.

US$15.22

1 Piece

Product specifications

O.D/MM

Product profile

Customization

Available

Type

Core Drill

Usage

Masonry Drilling, Concrete Drilling

Model NO.

Wet Core Drill Bit for Asia Market

Certification

En13236

Working Length(mm)

400

Thread

a Rod

Thickness of Barrel(mm)

2.0/2.5/3.0

Segment Size(mm)

12*3.5*9/16*3.5*9/20*3.5*9/24*3.5*9

Transport Package

Carton

Specification

Trademark

VLEADER

Origin

China

Key features

Laser Welded Segments: Segments are laser welded to prevent loss and contain high-quality artificial diamonds.

Extended Cutting Life: Higher diamond concentration in segments ensures faster cutting and longer service life.

Special Length Options: Available in special lengths, including 400mm working length for deep drilling applications.

Professional Grade Quality: Designed for medium to large jobs, preferred by professional concrete coring contractors.

En13236 Certified: Product meets En13236 certification standards for quality and safety.

Versatile Material Use: Suitable for masonry drilling and concrete drilling with optimized performance.

Company profile

Importers and ExportersQuality AssuranceOEM Services100% Finished Products Inspection

Hangzhou Vleader Tools Co., Ltd.

Zhejiang, 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. CertifiedNearest Port: Shang hai portAverage Response Time: ≤0.06h CertifiedTerms of Payment: T/T, LC, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier operates across equipment, security, firefighting, robotics, artificial intelligence hardware, machinery, components, and related technical or design services. It demonstrates broad customization capability, ODM services, recent new-product activity, and OEM service for known brands. Manufacturing information indicates two production lines, fewer than five quality-control staff, one R&D engineer, and one-month order fulfillment in both peak and off-peak periods. However, supplier-service controls are weak: no documented procedures or records were reported for supplier assessment, corrective actions, or complaint handling, and production batches are not continuously reconciled. The available information does not establish certifications, customer cases, or financial credibility; monetary figures are omitted.

Supplier typeThe supplier presents a broad equipment and industrial-product business scope, covering security and firefighting equipment, robots, AI hardware, pumps, mining and agricultural machinery, electrical equipment, components, repair, leasing, sales, design, and technical services. This supports classification as a diversified equipment and machinery supplier rather than a narrowly specialized provider.

After-Sales capabilityThe supplier reports no written procedures or records for effectively handling customer complaints, and no written corrective and preventive-action procedures or records. These are explicit weaknesses in documented after-sales and issue-resolution controls.

R&D capabilityThe supplier states that it had new products during the past year and provides ODM services, indicating active product-development capability. However, it has only one year of total R&D-engineer experience and no available SDK, so the evidence supports product innovation but not a strong software-development platform capability.

Production capacityThe supplier operates two production lines and reports one-month fulfillment during both peak and off-peak periods. Nevertheless, it has fewer than five quality-control staff and does not continuously reconcile quantities for each batch or mass production, indicating capacity with material production-control limitations.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also states that ODM services are available, providing strong direct evidence of broad customization capability.

Product Q&A

Q:Are you a manufacturer or trading company?

We are a global OEM/ODM factory for famous brands in the light construction industry since 1999, with over 10 years of exporting experience to 30+ countries.

Q:What is the minimum order quantity (MOQ)?

The minimum order quantity is 1 pc for stock products. For OEM service, the MOQ is 50 pcs.

Q:Can I get a free sample for testing?

Yes, sample testing is available. You can pay for the sample in advance, and we will refund or deduct the cost in your regular or bulk order.

Q:How long is the delivery time?

Stock products for sample testing take around 3-7 days. Regular or bulk orders take around 30-45 days.

Q:What are the payment terms?

Bulk orders accept L/C at sight, T/T, and VTB. Sample orders accept PayPal/Alipay. We require a 30% deposit in advance and 70% before shipment after QC inspection.