API 7-1 Heavy Weight Drill Pipe 4 Inch Nc40 AISI 4145h Modified

Name: API 7-1 Heavy Weight Drill Pipe 4 Inch Nc40 AISI 4145h Modified
Brand: Hunan Shunfu Metal Material Co., Ltd.
SKU: 2092162215

Hunan, ChinaHunan Shunfu Metal Material Co., Ltd.

US$1,300.00-1,900.00

1 Ton

Sample price:US$80.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Technical/Sample/Quality

Warranty

1 Year

Model NO.

HWDP

Manufacturing Process

Forging

Surface Treatment

Coating

Operation Pressure

Atmospheric Pressure

Material

Alloy

Standard or Designation

API Spec 7-1, Latest Edition

Applications

Oil and Gas Drilling, Energy and Water Wells

Integral or Friction Welded Hwdp

Od 2-7/8 to 6-5/8 in (73.0 to 168.3 mm)

Friction Welded Hwdp

Wall 0.625 to 1.125 in (15.9 to 28.6 mm)

Connector Thread

Nc26, Nc31, Nc38, Nc40, Nc46, Nc50

Transport Package

Steel Frame

Specification

3-1/2 OD to 6-5/8

Trademark

SHUNFU

Origin

China

Key features

110 ksi Min Yield: Quenched and tempered AISI 4145H Mod delivers 758 MPa yield and 285-341 HBW.

Center Wear Pad: 4-1/2 in mid body wear pad lifts the tube off the hole wall to cut drag torque.

NC40 Thread Accuracy: Threads gauged to API Spec 7-2 for repeatable make-up torque and sealing.

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: ≤24h

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:Which specification covers this 4 in NC40 heavy weight drill pipe?

It is manufactured to API Spec 7-1 for dimensions, material and testing, with the NC40 rotary shouldered connection gauged to API Spec 7-2. Only the pipe body of a friction welded version references API Spec 5DP and ISO 11961, so your inquiry can be quoted either way with no loss of compliance.

Q:Can it be built for sour service and fitted with hardbanding?

Standard 4145H Modified is not intended for sour wells, but we engineer a sour grade with lower hardness and tighter residual elements when the well programme requires it. Arnco type hardbanding, internal epoxy coating, copper plating and pressed steel protectors are all supplied from our own line in the same shipment.

Q:What documents and inspection come with each joint?

Every joint ships with an EN 10204 3.1 certificate under our ISO 9001 system, listing heat number, chemistry, heat treat chart, tensile, impact and hardness results, plus full length ultrasonic and thread gauge reports. Third party witness inspection is arranged on request.