8 Inch Welded Heavy Weight Drill Pipe API 7-1

Name: 4145h Modified / 1340 6-5/8 Inch Welded Heavy Weight Drill Pipe API 7-1
Brand: Hunan Shunfu Metal Material Co., Ltd.
SKU: 2318059875

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.

4145H

Manufacturing Process

Forging

Surface Treatment

Coating

Operation Pressure

Atmospheric Pressure

Material

Alloy

Applications

Oil and Gas Drilling / Downhole Tools

Connections

6-5/8 Fh, Nc50, and High-Torque Options

Delivery Condition

Quenched and Tempered with Normalized

Transport Package

Steel Frame

Specification

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

Trademark

SHUNFU

Origin

China

Key features

65/120 ksi Dual-Grade Body: 4145H Modified joints welded to a 1340 tube add strength and flex.

Anti-Wear Center Upset: The raised wear pad keeps the tube off the wall to cut drag and sticking.

PI 7-1 Certified Welding: Each joint is ultrasonically tested for reliable drilling in any well.

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: ≤7.28h

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 steel grades are used in this heavy weight drill pipe?

SHUNFU METAL builds each 6-5/8 inch welded HWDP from two grades. The central tube is AISI 1340 normalized steel with 65 ksi minimum yield strength. The tool joints are AISI 4145H Modified alloy steel, quenched and tempered to 120 ksi. This dual-grade design concentrates maximum strength at the threaded connections while keeping the body flexible enough to absorb vibration and resist fatigue cracking.

Q:What standards does this drill pipe meet?

he pipe is manufactured and inspected to API Spec 7-1, with NS-1 and DS-1 properties available on request. Every weld zone receives 100 percent ultrasonic and hardness testing before shipment. SHUNFU METAL is ISO 9001 certified and supplies a full material test certificate covering chemical analysis and mechanical properties with each order.

Q:What sizes and connections are available?

The 6-5/8 inch body is offered with a 4-1/2 inch ID and about 70 lb/ft nominal weight, fitted with 6-5/8 FH pin and box connections. Tool joint OD is 8 inches with a 7-1/8 inch center upset. SHUNFU METAL also supplies sizes from 2-7/8 to 6-5/8 inch in integral, welded, and spiral designs.