TT, Paypal, L/C, Western Union; 30% deposit before mass production, balance against copy of B/L.

How to deal with the faulty?

During the warranty period, we will repair or replace defected products.

4 Inch Diamond Core Bit

Name: Ruishi Reverse Circulation Coring Bit PDC Core Bit 8-1/2 Inch 12-1/4 Inch Diamond Core Bit
Brand: Hebei Ruishi Bits Manufacturing Co., Ltd
SKU: 2054034172

Hebei, ChinaHebei Ruishi Bits Manufacturing Co., Ltd

US$1.00-8,888.00

1 Piece

Product profile

Customization

Available

Customized

Length

Jobber-length

Model NO.

12-1/4 inch

Type

Core Drill Bit

Material

Tungsten Carbide

Usage

Well Drilling

API Connection(Reg)Pin

Chuan8-3CBS/4CBS

Weight on Bit(kN/mm)

20-100

Rotary Speed(Rpm)

40-150

Primary Cutter Size

16mm

Tfa(In2)

6-10

Gauge Length

2"-3.5"

Transport Package

Plywood Box and Ad Required

Specification

8-1/2 inch

Trademark

Ruishi

Origin

China, Cangzhou

HS Code

820719

Production Capacity

20000PC/Year

Key features

Reverse Circulation Sampling: Real-time sampling and drilling simultaneously to reduce trips and improve efficiency.

High Wear Resistance: Inner and outer gauges protected by natural diamond for several-fold increased stability.

High Core Recovery: Specially designed core head ensures high rates of core recovery in various formations.

Optimized Cooling Design: Optimized waterway design benefits bit cleaning and cooling during operation.

API & ISO Certified: Complies with API Spec7-1, ISO9001, ISO14001, and OHSAS18001 standards.

Customizable Options: Supports customization from samples, designs, and flexible minor adjustments.

Wide Application Range: Suitable for soft to medium hard abrasive formations like shale, limestone, and sandstone.

Advanced Manufacturing: Equipped with five-axis machining centers and CNC sintering furnaces for precision.

Company profile

Importers and ExportersYears of Export ExperienceSelf-brandedExhibition Experience

Hebei Ruishi Bits Manufacturing Co., Ltd

Hebei, 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: 18years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤1.76h

AI-Powered supplier vetting

SummaryHebei Ruishi Bits Manufacturing Co., Ltd. is described as a specialized manufacturer of diamond drill bits and drilling tools, with research, design, manufacturing, sales, and service capabilities. It offers 3D design, OEM, ODM, and multiple customization options. The supplier reports machining, laser cutting, drilling, sawing, wire cutting, and testing equipment, along with documented inspection, quality assurance, corrective-action, and complaint-handling procedures. ISO9001:2015, ISO45001:2018, and ISO14001 certifications are reported. However, it reported no new products in the past year, only two R&D engineers, no overseas agents, branches, warehouse, or showroom, and no valid manufacturing-capacity contract with related subcontractors. Financial information is insufficient for assessment. Customer-case evidence is limited: it reports no Fortune 500 cooperation, while OEM service for well-known brands is claimed without naming customers.

Supplier typeThe supplier identifies itself as a specialized company engaged in the research, design, manufacture, sales, and service of diamond drill bits and drilling tools. This supports classification as a specialized drilling-tool manufacturer rather than a general trading company.

CertificationsReported management-system certifications include ISO9001:2015, ISO45001:2018, and ISO14001. The supplier also reports a product compliance certification category of “Others” and an environmental impact assessment report, but the specific product certification is not identified.

R&D capabilityThe supplier provides 3D software design, ODM, OEM, and several R&D customization services. Nevertheless, it reported no new products in the past year and lists only two R&D engineers, which is explicit evidence of limited recent product-development output.

Production capacityProduction resources include machining, laser cutting, radial drilling, sawing, wire cutting, and universal testing equipment. Documented inspection, quality-assurance, corrective-action, and supplier-assessment procedures are reported, with inventory capability and stated lead times; however, there is no valid manufacturing-capacity contract with related subcontractors.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, flexible customization, 3D software design, ODM, and OEM services for popular brands. These multiple stated service types provide direct evidence of broad customization capability.