API 7-1 P550 NMDC Non-Magnetic NC38 Drill Collar for Well Drilling

Name: API 7-1 P550 NMDC Non-Magnetic NC38 Drill Collar for Well Drilling
Brand: Hunan Shunfu Metal Material Co., Ltd.
SKU: 2027916745

Hunan, ChinaHunan Shunfu Metal Material Co., Ltd.

US$2,300.00

1-9 Tons

US$2,200.00

10-24 Tons

US$2,100.00

25+ Tons

Sample price:US$50.00/kg.Request sample

Product profile

Customization

Available

After-sales Service

Technical/Sample/Quality

Warranty

1 year

Model NO.

P550

Manufacturing Process

Forging

Surface Treatment

Painted

Operation Pressure

Atmospheric Pressure

Material

Alloy

Delivery condition

Solution-annealed, cold-worked, forged

Surface condition

Black, rough turned, peeled, ground, polished

Connections

NC23 to NC70, NC38 standard

Standard

API Spec 7-1, NS-1, SY/T 5144, NACE MR0175

Typical Applications

Oil and gas directional drilling

Transport Package

Standard

Specification

OD 3-1/8 in to 11 in, ID 1-1/4 in to 3-1/4 in

Trademark

SHUNFU

Origin

China

HS Code

8431431000

Production Capacity

100000 Tons Per Year

Key features

Ultra-Low Permeability: 1.005 max with 0.05 uT hot spots, keeping MWD and LWD surveys clean.

140 ksi Yield: Cold-worked P550 gives 965 MPa yield and 1035 MPa tensile strength.

Every Collar Mapped: Full-length Foerster permeability trace ships with each SHUNFU METAL collar.

Sour-Service Ready: Roller-burnished ID above 1 mm compressive depth resists H2S cracking.

Complete Size Range: OD 3-1/8 to 11 in, NC35 to NC70, slick, spiral or flex body.

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 is a non-magnetic drill collar?

An NMDC is a thick-walled bottom-hole-assembly member machined from austenitic Mn-Cr-N stainless steel (P550 / 15-15HS). It carries bit weight like a 4145H collar while shielding MWD and LWD instruments from drill-string magnetism.

Q:Why is permeability below 1.005 important?

Higher permeability bends the earth's field around the survey tool, corrupting azimuth readings. Corrected values above the API 7-1 limit of 1.010 cause cumulative positional error in long horizontal wells.

Q:What sizes, grades and connections do you supply?

OD 3-1/8 to 11 in, ID 1-1/4 to 3-1/4 in, 9.15 m or 9.45 m. Grades P530, P550, P580, P650, P690, P750 and 15-15HS; NC23 to NC70, REG and FH connections.

Q:Can it run in sour (H2S) service?

Yes. High chromium plus nitrogen gives PRE min 30, the ID is shot peened or roller burnished, and intergranular corrosion is verified to ASTM A262 Practice A and E and pitting to ASTM G48.

Q:What documents are included?

EN 10204 3.1 certificates per collar, with 3.2 third-party witnessing optional. Each unit is 100% ultrasonically tested to ASTM E114 and permeability mapped to ASTM A342.