Is customization available?

Yes, we offer customization from samples, designs, full customization, minor customization, and flexible customization.

What are the lead times?

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

What is the minimum order quantity?

The minimum order quantity is negotiable.

Spec 7 Nmdc Heavy Weight String Slick Drilling Collar

Name: Spec 7 Nmdc Heavy Weight String Slick Drilling Collar
Brand: Dongying Tianrui Petroleum Technology Co., Ltd.
SKU: 2133917572

Shandong, ChinaDongying Tianrui Petroleum Technology Co., Ltd.

US$1,100.00

1-99 Pieces

US$800.00

100+ Pieces

Product specifications

Color

Sample price:US$1100.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Repair

Warranty

Two Years

Model NO.

Drill Collar

Manufacturing Process

Forging

Surface Treatment

Polishing

Operation Pressure

Atmospheric Pressure

Material

Alloy

Thread Connection

Reg,Nc,Fh,If

Color

Red/Bule/Customize

Magnetic Material

P530, P550

Non Magnetic Material

AISI 4154h

Available

Drill Collar Available

Application

Energy & Mining, Well Drilling, Metallurgy Llury

Transport Package

Standard Export Package

Specification

customizable

Trademark

Origin

Shandong Dongying

HS Code

8431431000

Production Capacity

5000 PCS/Year

Key features

Comprehensive Warranty Coverage: Two-year warranty provided for all mechanical defects and performance issues.

Customizable Color Options: Available in Red, Blue, or fully customized color per customer specifications.

Multiple Thread Connection Types: Supports Reg, Nc, Fh, and If thread connections for versatile compatibility.

Advanced Material Selection: Manufactured from Alloy, P530, P550, and AISI 4154h for optimal strength.

Precision Manufacturing Process: Forged and polished strictly according to Spec7-1 and SY5411 standards.

Optional Hardbanding Service: Hardbanding can be added to box thread faces upon customer request.

Spiral Design for Anti-Sticking: Reduces contact area to prevent bit sticking from differential pressure.

Elevator and Slip Grooves: Grooves on box thread face allow use as lifting sub and safety slip.

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: ≤1.56h

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:How do you guarantee quality?

Pre-production samples are always available before mass production; final inspection is always carried out before shipment.

Q:What services can you provide?

Accepted delivery conditions include FOB, CIF, FAS, DDP, and express; payment currencies include USD, AUD, Euro, and RMB; payment types include T/T, L/C, MoneyGram, credit card, PayPal, Western Union, and cash.

Q:What is the after-sales service policy?

We provide 24-hour online maintenance guidance service.

Q:What languages are supported?

We support English, Chinese, and other languages.

Q:What is the warranty period?

The product comes with a two-year warranty.