What are the payment and delivery terms?

Accepted payment currencies include USD, AUD, EUR, RMB via T/T, L/C, etc. Delivery terms include FOB, CIF, FAS, DDP. Lead time is approximately one month.

What after-sales service is provided?

We provide 24-hour online maintenance guidance service to assist with any technical issues or operational questions.

6 1/2" Spiral API 4145h Alloy Steel Drilling Tool Non-Magnetic Drill Collar

Name: 6 1/2" Spiral API 4145h Alloy Steel Drilling Tool Non-Magnetic Drill Collar
Brand: Dongying Tianrui Petroleum Technology Co., Ltd.
SKU: 2069219362

Shandong, ChinaDongying Tianrui Petroleum Technology Co., Ltd.

US$1,100.00

1-99 Pieces

US$800.00

100+ Pieces

Sample price:US$1100.00/piece.Request sample

Product profile

Customization

Available

Customized

Surface Treatment

Polish

Model NO.

Drill Collar

Type

Non-magnetic Drill Collar

Standard

AISI

Usage

Oil Mining, Coal Mining, Well Drilling, Ore Mining

Material

Alloy

Color

Red/Bule/Customize

Diameter

4 1/2"-20"

Connection

API, Reg ,API, If ,Nc

Magnetic Material

P530 ,P550

Non Magnetic Material

AISI 4154h

Transport Package

Standard Export Package

Specification

customizable

Trademark

Origin

Shandong Dongying

HS Code

8431431000

Production Capacity

5000 PCS/Year

Key features

Non-Magnetic Alloy Steel: Made from API 4145h alloy steel with cold-rolled finish for optimal stress and corrosion resistance.

Spiral Design for Anti-Sticking: Spiral structure reduces contact area to prevent bit sticking caused by differential pressure.

Customizable Dimensions: Diameter customizable from 4 1/2' to 20', with various connection types like API, Reg, NC.

Multiple Color Options: Available in Red, Blue, or fully customized colors based on customer requirements.

Hardbanding Optional: Hardbanding can be added upon customer request to enhance durability and performance.

API Standard Compliance: Manufactured strictly according to API Spec 7-1 and SY5411/SY5144 standards.

Elevator & Slip Grooves: Grooves made on box thread face for use as lifting sub and safety slip during trip out.

100% Quality Inspection: Pre-production samples and final inspections before shipment ensure consistent quality.

Company profile

Cooperated with Fortune 500High Repeat Buyers ChoiceImporters and Exporters

Dongying Tianrui Petroleum Technology Co., Ltd.

Shandong, 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: 1 year CertifiedNearest Port: Qingdao PortAverage Response Time: ≤0.93h

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier with 3D software design and multiple customization options. Its business covers petroleum machinery, hydraulic components, mechanical equipment services, electrical equipment, instruments, chemical products, and camping houses. Quality and sustainability credentials include ISO9001:2015, ISO45001:2018, and ISO14001, while documented quality procedures, raw-material traceability, and two inspectors support basic quality control. The supplier has in-stock capacity, a one-month average lead time in both peak and off-season, and 12 qualified service-capability suppliers. However, it lacks an available SDK, valid manufacturing-capacity contracts with factories or related subcontractors, overseas warehouses, overseas showrooms, overseas agents or branches, and offline trade-show experience. Corrective-action and complaint procedures exist but lack written records. Financial information is represented only by reporting years, so financial...

Supplier typeThe supplier is explicitly identified as a professional technical supplier. Its stated scope includes petroleum machinery and accessories, hydraulic components, mechanical equipment services, electrical equipment, instruments, and related products, indicating a technically oriented industrial supplier.

CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, and ISO14001 certifications, and earlier company information states that quality, environmental, and occupational health and safety management system certifications were obtained in 2014. These records provide explicit evidence of certification holdings.

R&D capabilityThe supplier is described as having professional technical R&D capability and can provide 3D software design services, which supports design and technical development capability. However, no SDK is available, indicating a limitation in SDK-based development or integration.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. The same range is supported in the design-services capability record, providing clear evidence of broad customization capability.

Product Q&A

Q:What is the material and standard of the drill collar?

The drill collar is made of API 4145h Alloy Steel and is manufactured strictly according to API Spec 7-1 and SY5411/SY5144 standards.

Q:What are the customization options for this product?

We offer customization for color (Red/Blue/Custom), diameter (4 1/2'-20'), connection type (API, Reg, NC), and magnetic material properties.

Q:What is the purpose of the spiral design?

The spiral drill collar is designed to reduce the contact area with the hole wall, thereby avoiding efficient bit sticking caused by differential pressure.

Q:Are elevator and slip grooves available?

Yes, elevator groove and slip groove can be made on the box thread face for use as a lifting sub and safety slip when tripping out, per API SPEC7-1.

Q:What certifications and quality controls are applied?

Products comply with API and SY standards. We provide pre-production samples, 100% visual inspection of finished products, and final inspection before shipment.