API 5CT L80 Casing And Tubing
API 5CT L80 Casing And Tubing suppliers
API 5CT L80 Casing And Tubing factory
API 5CT L80 Casing And Tubing best

API 5CT L80 Casing And Tubing

API 5CT L80 Casing and Tubing is a special type of pipe used for oil well drilling，which is mainly used in the oil and gas extraction field.And it includes grades L80-1, L80 9Cr, L80 13Cr.

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Product Introduction

API 5CT L80 Casing and Tubing

what is API 5CT L80 Casing pipe and Tubing pipe?

API 5CT L80 Casing pipe and Tubing pipe support the wellbore of oil and gas wells, ensuring smooth drilling and long-term production safety, and forms the main structure of the wellbore.The product complies with the API SPEC 5CT standard.L80 is one of the 10 steel grades defined by the API 5CT standard, which includes L80-1 and high-performance alloy steels such as L80-9Cr and L80-13Cr.The main difference between these three types of steel lies in their chromium content.L80 9Cr contains 8-10% chromium and L80 13Cr contains 12-14% chromium.

Standards: API 5CT

Grades: L80-1, L80 9Cr, L80 13Cr

Specification levels :PSL1, PSL2 and PSL3

Type:Seamless OCTG

Length: R1, R2, R3

Stock Available: Yes

API 5CT L80 Casing and Tubing Applications:

Downhole casing and tubing in oil and gas wells, supporting the wellbore, isolating the formation, transporting oil and gas.

characteristics:

Mechanical performance characteristics:

The yield strength of L80 is strictly limited to 552–655 MPa, which is moderate and neither too high nor too low, and is specifically designed to match the formation pressure of medium and deep oil and gas wells.The API standard strictly limits the hardness to no more than 22 HRC. It is a naturally sulfide-resistant stress-cracking steel grade and can be used in acidic oil wells containing H₂S. L80 achieves a perfect balance of strength, toughness, hardness, and acid resistance, making it the preferred steel grade for medium-deep wells and acidic wells.

Corrosion resistance:

L80-1: Standard carbon steel, suitable for ordinary sulfur-free, low-corrosion oil and gas wells, high cost-performance ratio.L80 9Cr and 13Cr: Chromium alloy, resistant to CO₂ and H₂S acid corrosion, suitable for highly corrosive wells, sulfur-containing wells, and geothermal wells.

Operating conditions characteristics:

Specifically designed for oil casing and tubing, supporting the wellbore, isolating the formation, and transporting oil and gas.Suitable for medium-deep wells, acidic wells, coalbed methane wells, geothermal wells, high-pressure water or gas injection wells.Highly adaptable to various thread types: can be made into short round, long round, trapezoidal, and high-end special threads, providing excellent sealing and a secure connection.

oil pipe identification of color:

L80-1: One red band and one brown band.

L80 9Cr: one red band, one brown band and two yellow bands.

L80 13Cr: one red band, one brown band and one yellow band.

casing pipe Length range:

R1: 4.88 to 7.62 m

R2: 7.62 to 10.36 m

R3: 10.36 to 14.63 m

API 5CT L80 casing and tubing Quality Requirements and Inspection:

Appearance Quality:

The inner and outer surfaces of the casing and the coupling surface must be free from defects such as folds, hairline cracks, delamination, cracks, rolling creases, and scale. Partial removal of defects is permitted, but the depth is strictly limited.

Physical performance testing:

Flattening tests, tensile tests, hydrostatic tests, hardness tests, and impact tests, to verify its mechanical integrity and pressure-bearing capacity.

Chemical composition testing:

Precise analysis of the content of elements such as carbon, sulfur, phosphorus, and chromium is conducted to ensure that the materials meet the specified standards.

Packaging and Production:

Packaging:

Domestically produced products are typically bundled with steel wire or steel strapping. Each pipe's threaded end must be fitted with a protective ring to prevent damage during transportation and storage.

API 5CT L80 Packaging Image

API 5CT L80 OCTG casing Production process:

A qualified API 5CT L80 casing requires multiple precision processes, including continuous casting of round billets, piercing and rolling, quenching and tempering heat treatment, surface treatment, and full inspection.

FAQ

1. What is API 5CT L80?

API 5CT L80 is a kind of OCTG seamless steel pipe for oil casing and tubing, compliant with API 5CT international standard. It is quenched and tempered for stable mechanical performance.

2.What threads do you support?

We provide Short Round Thread, Long Round Thread, Buttress Thread and premium special connections as required.

3.Do you provide factory test certificate?

Yes, inspection report and API certified documents can be provided.

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