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API Oil Pipe

API oil pipe refers to steel pipes manufactured to meet American Petroleum Institute (API) standards, primarily used for oil and gas industry drilling, production, and transportation. These pipes include casing, tubing, and line pipes, each serving different functions—from supporting well walls to transporting crude oil and natural gas. API oil pipes are designed for high strength, pressure resistance, and durability in harsh drilling environments.
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Product Description

Technical Specifications


  • Material Grade: API 5CT (J55, K55, N80, L80, P110), API 5L (Grades B, X42–X80)

  • Types:

    • Casing Pipe: Supports the borehole wall

    • Tubing Pipe: Transports oil/gas from well to surface

    • Line Pipe: Transports crude oil and gas over long distances

  • Size Range:

    • OD: 1.9" – 20" (48.3mm – 508mm)

    • Wall Thickness: As per API standard (varies with grade)

    • Length: R1 (4.88–7.62m), R2 (7.62–10.36m), R3 (10.36–14.63m)

  • End Connections: Plain end, threaded & coupled, premium connections

  • Surface Treatment: Phosphated, painted, or coated per API requirements


Mechanical & Performance Properties


  • Tensile Strength: 517–758 MPa (grade dependent)

  • Yield Strength: 379–655 MPa

  • Elongation: ≥ 15%

  • Collapse Resistance: High performance under wellbore pressure

  • Impact Resistance: Withstands shock and vibration in drilling operations

  • Corrosion Resistance: Optional internal coatings or alloy grades for sour service

  • Testing: Hydrostatic test, drift test, NDT (UT, MPI) as per API standards


Product Real Shot


API


Packaging and Shipping


API包装


Applications & Advantages


Applications:

  1. Oil well casing to maintain borehole integrity

  2. Tubing for extracting hydrocarbons

  3. Long-distance crude oil and gas transmission lines

  4. Offshore and onshore drilling operations

Advantages:

  • Meets strict API specifications for safety and reliability

  • Suitable for extreme downhole conditions

  • Wide range of steel grades to match different well conditions

  • High resistance to pressure, collapse, and corrosion

  • Customizable lengths and end connections for different rigs



FAQ


Q1: What product information must I provide before making a purchase?

A: Please provide the material, size, surface treatment requirements, and the quantities you need.

Q2: What about product pricing information?
A: Prices may vary due to fluctuations in raw material costs.

Q3: Is it possible to send samples?
A: Yes, we offer free samples with express shipping worldwide.

Q4: Do you offer a service for customized products?
A: Yes, we can supply according to your specific requirements.

Q5: Can I visit you in person?
A: Customers from all over the world are welcome to meet with us.

Q6: Can you assist me in importing steel products for the first time?
A: Yes, we can provide support through our experienced shipping agents.


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Quality and After-sale Assurance

Reliable Quality – All products are made with premium raw materials, advanced equipment, and strict quality inspections before delivery.

Compliance Guarantee – Specifications strictly follow technical agreements, ensuring products are free from defects in design, materials, and workmanship.

After-sales Service – Dedicated teams provide timely response, technical consultation, and long-term support.

Global Commitment – We serve clients in over 50 countries with consistent quality and reliable service.