What are the payment terms?

We accept LC, D/P, T/T, PayPal, Western Union, and small-amount payments.

What is the lead time for production?

Peak and off-peak season lead time is within 15 workdays.

Is the manufacturer API certified?

Yes, we are an API-Certified established manufacturer committed to API Standards and ISO quality management.

API 5dp High Quality Hexagonal and Square Kelly Pipe

Name: API 5dp High Quality Hexagonal and Square Kelly Pipe
Brand: Tianhe Oil Technology Co., Ltd.
SKU: 1985359175

Heilongjiang, ChinaTianhe Oil Technology Co., Ltd.

US$200.00-30,000.00

1 Piece

Product profile

Customization

Available

After-sales Service

Support

Warranty

Support

Model NO.

3 1/2"

Manufacturing Process

CNC Milling

Surface Treatment

Spray-Paint

Operation Pressure

Atmospheric Pressure

Material

Alloy

Grade

Grade: E75 ,K55 N80 ,35CrMo AISI 4140 G105,S135

Transport Package

Wooden Box

Specification

refer to product description

Trademark

TIANHE

Origin

China

HS Code

8431431000

Production Capacity

5000piece/Year

Key features

API Certified Manufacturing: Manufactured from AISI 4145H-modified alloy steel with Brinell hardness 285-341BHn.

Precision Machining Process: Flats precision-milled to API specifications with tight tolerances on rigid Kelly mills.

Comprehensive Quality Inspection: Ultrasonic inspection on all sections with 100% visual and function inspection.

Customizable Grades and Sizes: Available in Grade E75, K55, N80, 35CrMo, AISI 4140, G105, S135 with custom dimensions.

Robust Material Composition: Fully heat-treated alloy steel with minimum average Charpy impact value of 40 ft-lbs.

Protective Packaging: Shipped in protective steel-cased scabbards with export-grade precautions.

ISO and HSE Compliance: Adheres to ISO quality management and HSE management systems.

Full Customization Options: Supports customization from samples, designs, minor adjustments, and full customization.

Company profile

High Repeat Buyers ChoiceExhibition ExperienceQuality AssurancePrivate Mold

Tianhe Oil Technology Co., Ltd.

Heilongjiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 20 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤15h

AI-Powered supplier vetting

SummaryThe supplier operates in oil drilling, workover, cementing, completion, mining machinery, and related technical services. It has documented production equipment, quality-control procedures, product traceability, complaint-handling procedures, and customization options ranging from sample-based work to full customization. The supplier reports recent new-product development and ODM services, but is not identified as a professional technical supplier and does not provide 3D software design or SDK services. It holds ISO9001:2015, ISO45001:2018, ISO14001, and other certifications. Financial records are identified for 2020–2022, but their contents are not provided. Overseas warehouse, showroom, agent, or branch capabilities are absent. No specific customer cases are disclosed.

Supplier typeThe supplier is explicitly not classified as a professional technical supplier, while its stated business scope covers production, R&D, sales, maintenance, leasing, and technical services for oil drilling, workover, cementing, completion, and mining equipment. This indicates an equipment-focused industrial supplier with related technical-service activities rather than a dedicated professional technical-services provider.

CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, ISO14001, and other certifications. These certifications provide explicit evidence of quality, occupational health and safety, and environmental management certification.

After-Sales capabilityThe business scope includes maintenance and technical services, and the supplier has a clear, followed procedure for handling customer complaints. However, it has no overseas warehouse, showroom, overseas agent, or overseas branch, so international service coverage is limited based on the available evidence.

R&D capabilityThe supplier reports new products within the past year and provides ODM services, indicating active product-development capability. However, it does not provide 3D software design services, has no available SDK, and is explicitly not classified as a professional technical supplier, which limits the demonstrated scope of innovation support.

Production capacityThe supplier has a broad equipment base including tempering, carburizing and nitriding furnaces, lathes, milling and boring machines, CNC machining centers, and impact-testing equipment. Finished-product inspection instructions are uniformly followed, and the supplier reports 20 years of export experience with 41%–50% of sales from exports.

Customization capabilityBoth records explicitly list customization from samples, customization from designs, minor customization, and full customization. This demonstrates a broad stated customization range covering limited modifications through fully customized products.