Zhongji Metal
Diverse Product Range · Reliable Quality · Tailored Solutions
Covering various types of steel products such as steel pipes, steel plates, steel coils, steel bars, and structural steel
meeting the diverse needs of different industries.
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

Packaging and Shipping

Applications & Advantages
Applications:
Oil well casing to maintain borehole integrity
Tubing for extracting hydrocarbons
Long-distance crude oil and gas transmission lines
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.
Contact Us
PRODUCT
CONTACT US
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.

First class quality service and professional after-sales team.
*We respect your confidentiality and all information are protected.