What are the available sizes for the drill collars?

We provide sizes from 3 1/8 to 11 inches, with standard lengths of 30 or 31 feet.

What payment terms are accepted?

We accept LC, T/T, and D/P as terms of payment.

API Standard High Quality Spiral Drill Collar for Oil Field

Name: API Standard High Quality Spiral Drill Collar for Oil Field
Brand: Hunan Shunfu Metal Material Co., Ltd.
SKU: 2044032295

Hunan, ChinaHunan Shunfu Metal Material Co., Ltd.

US$500.00-2,000.00

1 Piece

Sample price:US$50.00/kg.Request sample

Product profile

Customization

Available

After-sales Service

Technical/Sample/Quality

Warranty

1 Year

Manufacturing Process

Forging

Surface Treatment

Polishing

Operation Pressure

Atmospheric Pressure

Material

Alloy

Steel Grade

4145h

Protectors

Thread Protectors

Properties

Ns1 and Ds1 Properties

Standard

According to API Spec 7-1

Available

Pony Drill Collar Available

Groove

Stress Reflief Groove

Transport Package

Standard

Specification

3 1/8" - 11"

Trademark

SHUNFU

Origin

China

Production Capacity

100000 Tons Per Year

Key features

API Standard Compliance: Manufactured strictly according to API Spec 7-1, API 7G, and ISO 9001 standards.

Differential Sticking Prevention: Spiral grooves allow free mud circulation, relieving pressure differences to reduce sticking.

High Strength Material: Made from AISI 4145H modified steel with high strength and toughness, especially at low temperatures.

Wide Size Range: Available sizes range from 3 1/8 to 11 inches, with lengths of 30 or 31 feet.

Advanced Heat Treatment: Superior-quality green pipe with advanced heat treatment for stable performance and quality.

Fatigue Resistance: Phosphatized cold roll on threads and stress relief grooves improve fatigue resistance.

Professional Support: Technical, sample, and quality after-sales services provided with 1-year warranty.

Company profile

Fast DeliveryLow MOQExperienced Team

Hunan Shunfu Metal Material Co., Ltd.

Hunan, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 7 years CertifiedNearest Port: shanghai portAverage Response Time: ≤18h

AI-Powered supplier vetting

SummaryHunan Shunfu Metal Material Co., Ltd. is a limited company supplying steel pipe, with 24 employees and stated annual output of 100,000 tons of oil steel products. It provides OEM and ODM services and can customize from samples or designs, but it does not provide 3D software design, has no SDK, and launched no new products in the past year. Export sales represent 71%–90% of total sales, with Southeast Asia and the Middle East identified as primary markets; however, it reports no overseas showroom, agents, branches, or offline trade-show participation. Lead time is one month in both peak and off-peak seasons. The available audit record identifies SGS as the auditor, but the stated audit result is 0 and no certification is identified. Quality and service governance evidence is weak because written procedures or records are absent for supplier approval, corrective actions, complaint handling, and service assessment. Financial records are referenced for 2021–2023, but their actual performance is not provided.

Supplier typeThe supplier is identified as Hunan Shunfu Metal Material Co., Ltd., a limited company with 24 employees whose primary and offered product is steel pipe. It is not part of a larger company group, and its stated business scope includes permitted company operations and import/export activities.

After-Sales capabilityThe supplier has no overseas showroom, agents, branches, or reported offline trade-show participation. It also has no written procedures or records for customer complaints, corrective and preventive actions, or service-capability assessment, indicating limited documented after-sales infrastructure.

R&D capabilityThe supplier is described as a professional technical supplier and offers ODM services, but it has only one year of total R&D engineer experience, no SDK, no 3D software design service, and no new products launched in the past year. These stated limitations demonstrate a deficiency in innovation resources and recent product development.

Production capacityThe supplier reports annual production of 100,000 tons of oil steel products, with one-month lead times in both peak and off-peak seasons. Its product scope is steel pipe, and the stated production information supports established manufacturing capacity, although the slices do not provide independent verification of output or quality performance.

Customization capabilityThe supplier explicitly provides customization from samples and designs, along with OEM and ODM services. This supports both customer-specified product adaptation and design-manufacturing cooperation, although 3D software design and SDK support are unavailable.

Product Q&A

Q:What standards does the drill collar comply with?

The drill collars are manufactured strictly according to API Spec 7-1, API 7G, and ISO 9001 standards.

Q:What is the material used for the drill collar?

They are made of AISI 4145H modified steel, which offers high strength and high toughness, especially under low temperatures.

Q:How do spiral grooves benefit drilling operations?

Spiral grooves allow mud to circulate freely around the drill collar body, relieving pressure differences to reduce the occurrence of differential pressure sticking.

Q:What is the warranty period for the product?

We provide a 1-year warranty for the drill collars.

Q:What is the minimum order quantity?

The minimum order quantity is 1 ton.