About Us

API 5CT Grade K55 Carbon Steel Seamless Tubings are strong pipes used mainly in the oil and gas industry. They are built to handle high pressure and tough conditions found underground. Made from carbon steel, these tubings are durable and reliable for tasks like drilling and production.

One important feature of K55 tubings is that they are seamless, meaning they don’t have any welded joints. This makes them stronger and less likely to leak. These tubings meet industry standards, ensuring they perform well in challenging situations. Overall, API 5CT K55 Carbon Steel Seamless Tubings are a safe and effective choice for oil and gas operations.

API 5CT Grade K55 Manufacturer & Supplier

Amardeep Steel is a leading manufacturer and supplier of API 5CT Grade K55 pipes and tubes, providing a variety of sizes from 0.405 to 80 inches. Our pipes come in different forms, such as as-rolled, normalized, and quenched and tempered, to suit various applications. We strictly follow the API 5CT K55 standard, which details the requirements for steel pipes, including casing, tubing, and coupling materials.

Quality is our top priority; all our pipe surfaces are subjected to 100% visual inspection to ensure they meet industry standards. We maintain a complete stock of IBR-certified API 5CT K55 carbon steel seamless tubings, with outer diameter sizes from ½” to 24” and nominal bore sizes from 15NB to 600NB. With a strong commitment to reliability and customer satisfaction, Amardeep Steel is your go-to source for API 5CT Grade K55 pipes.

API 5CT Grade K55 Specification 

API 5CT K55 CASING TUBING SPECIFICATIONS
Available Sizes 2 3/8″, 2 7/8″ and 3 ½” Outer Diameter
Grades J55, J55-FBNAU, N80, L80, P110
Tubing 1 1/4 “ – 2 1/16” Nom.
Standards API SPEC 5CT
Model in Common Use 2-3/8", 2-7/8", 3-1/2", 4", 4-1/2"
Length Range R1(6.10-7.32m), R2(8.53-9.75m), R3(11.58-12.8m)
Steel Grade (Casing Grades, Tubing Grades) J55, K55, N80-1, N80-Q, L80, P110
Type of Screw Thread Non upset threaded end(NUE), External upset threaded end(EUE)
Specialties
  • Coating to customer specifications
  • External upset
  • Couplings – EUE, AB Modified, turned down, special clearance couplings
  • Pup Joints
  • Heat treating
  • Hydrostatic Testing
  • Drifting (Full-length, or just ends)
  • Full third-party inspection capabilities (EMI, SEA, and Weld Line)
  • Threading
End Finishing External Upset Ends (EUE), Flush Joint, PH6 (and equivalent connections), Integral Joint (IJ)

K55 Chemical Composition 

Carbon Silicon Manganese Phosphorous Sulphur Molybdenum Nickel Chromium Copper Others
0.03 0.03

K55 Mechanical Properties

Yield Strength Tensile Strength Elongation A5 min
MPa min ksi min MPa min MPa min ksi min Percentage
    655 95

K55 Equivalent Grades

DIN EN BS NFA ASTM ASME

API 5CT K55 Application

API 5CT K55 is used primarily in the oil and gas industry for:

  • Oil and Gas Wells: As casing and tubing to support well structures.
  • Offshore Platforms: Due to its corrosion resistance.
  • Water Wells: For exact drilling and support.
  • Geothermal Applications: In energy extraction.

Applications

API 5CT K55 Tubing Features

  • API 5CT K55 Casing Tubing is available in a free length range of 8m to 13m, according to the SY/T6194-96 standard. Additionally, lengths of no less than 6m can be offered, but this option should not exceed 20% of the total quantity.
  • Deformations mentioned above are not permitted on the outer surface of the API 5CT K55 Casing Tubing coupling.
  • Any deformation, such as hairline cracks, separations, creases, or scabs, is not acceptable on either the inner or outer surfaces of the product. All defects must be fully removed, with the removal depth not exceeding 12.5% of the nominal wall thickness.
  • The threaded surface of the coupling and API 5CT K55 Casing Tubing should be smooth, free from any burrs, tears, or other defects that could negatively affect strength and ensure a tight connection.

We Supply Globally

We Supply Our API 5CT Grade K55 to various countries like Mexico, Ireland, Oman, India, Russia, Algeria, Turkey, Bahrain, China, Trinidad & Tobago, Austria, Qatar, Ecuador, United Arab Emirates, Poland, Jordan, Libya, Philippines, Hungary, Nigeria, Bulgaria, Indonesia, Chile, Macau, Colombia, Croatia, Germany, Ghana, Argentina, South Africa, Greece, Switzerland, Hong Kong, Kuwait, France, Italy, Costa Rica, Kenya, Namibia, Azerbaijan, Japan, Venezuela, Morocco, Brazil, New Zealand, United Kingdom, Canada, Mexico, Bolivia, Romania, Iraq, Tibet, Angola, Chile, Estonia, Puerto Rico, South Korea, Nigeria, Finland, Tunisia, Slovakia, Vietnam, Egypt, Lithuania, Czech Republic, Bhutan, Peru, Zimbabwe, Ukraine, Australia, Gabon, Taiwan, Sri Lanka, Thailand, Lebanon, Kazakhstan, Belarus, Gambia, Norway, Netherlands, Bangladesh, Sweden, Pakistan, Serbia, Iran, Iran, Nepal, Spain, Poland, Yemen, United States, Singapore, Malaysia, Israel, Mongolia, Belgium, Afghanistan, Denmark, Portugal, Saudi Arabia.

We Supply Worldwide

We Supply Our API 5CT Grade K55 in various cities like Toronto, Al Khobar, Chandigarh, Haryana, Perth, Algiers, Ahvaz, Ulsan, Moscow, Istanbul, Howrah, Singapore, Ho Chi Minh City, Port-of-Spain, London, Rajkot, New York, New Delhi, Nagpur, Kuwait City, Karachi, Surat, Ernakulam, Gimhae-si, Granada, Kanpur, Kolkata, Lahore, Madrid, Visakhapatnam, Secunderabad, Bangkok, Mumbai, Coimbatore, Bogota, Milan, Tehran, Ranchi, Pimpri-Chinchwad, Montreal, Colombo, Bhopal, Seoul, Edmonton, Aberdeen, Caracas, Busan, Brisbane, Sydney, Calgary, Sharjah, Rio de Janeiro, Chennai, Chiyoda, Geoje-si, Jakarta, Thiruvananthapuram, Courbevoie, Riyadh, Indore, Jeddah, Hyderabad, Kuala Lumpur, Baroda, Ankara, Mexico City, Dubai, Gurgaon, Vung Tau, Lagos, Al Jubail, Melbourne, Los Angeles, Petaling Jaya, Bengaluru, Atyrau, Jamshedpur, Santiago, Hanoi, Thane, Pune, Doha, Faridabad, Vadodara, La Victoria, Muscat, Ludhiana, Jaipur, Navi Mumbai, Houston, Ahmedabad, Dammam, Manama, Nashik, Cairo, Abu Dhabi, Hong Kong, Dallas, Noida.