How do you handle defective products?

If there are defective items, we usually credit to our customer or replace them in the next shipment.

What is the lead time for production?

Depending on the products ordered, it usually takes a couple of days or even months to complete production if items are not in stock. The average lead time is one month for both peak and off-season.

High-Performance API Spec 7 Drill Collar for Oilfield Applications

Name: High-Performance API Spec 7 Drill Collar for Oilfield Applications
Brand: Wise Channel Industries Limited
SKU: 2114492005

Jiangsu, ChinaWise Channel Industries Limited

US$500.00-5,000.00

10 Pieces

Product profile

Customization

Available

After-sales Service

Online Support

Warranty

1 Year

Model NO.

NC44-60 NC44-60 NC44-62 NC46-62(4IF) NC46-65(4IF)

Material

Alloy

Outer Diameter

79.4~171.5in

Yield Strength

≥758, ≥689MPa

Tensile Strength

≥930MPa

Elongation Ratio

≥13%

Brinell Hardness

285~341hb

Charpy Impact Energy

≥54j

Transport Package

Wooden Case

Specification

Standard

Trademark

Wisechannel

Origin

Jiangsu China

HS Code

84304900

Production Capacity

1000units Per Year

Key features

API Spec 7 Certified: Conforms to API Spec 7 and holds the authority to use API monogram.

High Strength Alloy Steel: Made of high-quality alloy steel with seasoning treatment for long service life.

Anti-Fatigue Thread Design: Thread root treated by cold trundle strengthening for big bearing pressure.

Corrosion Resistant Threads: Phosphorized or copper-plated threads offer wear-resisting and sealing properties.

Customizable Specifications: Outer diameter, yield strength, and tensile strength are customizable within ranges.

1-Year Warranty: Comprehensive 1-year warranty coverage for mechanical defects.

Online Technical Support: Professional online support available for technical assistance and inquiries.

Versatile Thread Options: Available with standard tool joint threads or special-purpose threads for high pressure.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceFast DeliveryR&D Capabilities

Wise Channel Industries Limited

Jiangsu, China

Business Type: Manufacturer/Factory, Trading Company CertifiedCustomization Options: Minor Customization CertifiedNearest Port: Shanghai PortAverage Response Time: ≤3.22h CertifiedTerms of Payment: LC, T/T, D/P, etc. CertifiedInternational Commercial Terms(Incoterms): CIF, FOB, CFR, EXW

AI-Powered supplier vetting

SummaryWise Channel Industries Limited is a China-based trading company established in 2019, with three employees and a valid import/export license. The supplier reports petroleum-equipment output of 10,000 sets annually, exports accounting for 90% of sales, and one-month lead times in both peak and off-peak seasons. It offers minor customization but does not provide 3D software design, ODM, SDK, or overseas service infrastructure. No new products were launched in the past year. Service-management documentation is weak: some supplier records exist, but written procedures or records are missing for several controls, including customer complaints. Financial information is reported for 2021–2023, but the slices do not establish financial strength. Certification status, after-sales capability, and customer cases are not sufficiently evidenced.

Supplier typeThe supplier is identified as a Trading Company and a Limited Company, operating in Jiangsu, China. It also reports a valid import/export license, supporting its ability to conduct international trade.

After-Sales capabilityThe supplier has no overseas warehouse, showroom, overseas agent or branch, and has not participated in offline trade shows. Its complaint-handling capability lacks written procedures and records, indicating a documented after-sales weakness.

R&D capabilityThe supplier is not identified as a professional technical supplier, provides no 3D software design, ODM, or SDK, and launched no new products in the past year. Its R&D-supported design offering is limited to minor customization, demonstrating a clear innovation limitation.

Customization capabilityThe supplier explicitly offers minor customization and design services at the minor-customization level. This supports limited product adaptation but not advanced or extensive customized development.

Product Q&A

Q:What standards does the drill collar conform to?

The products conform to API Spec 7 'Regulation for Rotary Rig Equipment' and other related standards, and have obtained the certificate of authority to use API monogram.

Q:What materials are used for the drill collar?

Drill collars are made of high-quality alloy steel and treated by seasoning to ensure high strength and long service life.

Q:What is the warranty period?

We provide a 1-year warranty for this product.

Q:What are the payment terms?

For new clients, advance payment (30%-100% of total amount) is required, the balance needs to be paid before delivery after inspection. Payment methods include T/T, L/C, D/P, PayPal, Western Union, and Small-amount payment.

Q:What is the order procedure?

First, we discuss order details by email, TM, or other social media; then we issue a PI for your confirmation. You will be requested to make full payment or deposit before production starts. After production is finished, we contact you for shipment details and balance payment before arranging shipment.