What is the minimum order quantity?

The minimum order quantity is 1 Ton.

What are the payment terms?

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

What is the lead time for production?

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

AISI 4145h Mod Od 8inch and 6 5/8 Reg Spiral Drill Collar

Name: AISI 4145h Mod Od 8inch and 6 5/8 Reg Spiral Drill Collar
Brand: Hunan Shunfu Metal Material Co., Ltd.
SKU: 2097674025

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

Manufacturing Process

Forging

Model NO.

4145H MOD

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 7-1 Compliant Material: Manufactured from AISI 4145H Mod steel meeting API Spec 7-1 NS1 and DS1 properties.

Differential Sticking Prevention: Spiral grooves allow mud circulation to relieve pressure difference and reduce sticking risks.

High Strength & Toughness: Advanced heat treatment ensures superior strength and toughness, especially under low temperatures.

Fatigue Resistance Threads: Phosphatized cold roll on threads improves fatigue resistance for longer service life.

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

Customization Support: ODM and OEM services available; customization from samples and designs supported.

Stress Relief Groove: Features Stress Relief Groove (SRG) on pin and back on box connections for durability.

Strict Quality Control: Meets API 5DP, API 7G, and ISO 9001 standards with advanced inspection instruments.

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: ≤15h

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 material is used for the drill collar?

The drill collars are manufactured from AISI 4145H Mod steel, meeting API Spec 7-1 NS1 and DS1 properties.

Q:What is the function of the spiral grooves?

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

Q:What are the available sizes for the drill collars?

We provide drill collars with external diameters ranging from 3 1/8 to 11 inches, available in 30 or 31 foot lengths.

Q:Do you offer customization services?

Yes, we offer ODM and OEM services, including customization from samples and designs, to meet specific customer requirements.

Q:What standards does the product comply with?

The products meet international requirements of API 5DP, API 7G, API Spec 7-1, and ISO 9001.