API 5CT L80 Pipe

These casings are available in different sizes and specifications, including wall thickness from 4mm to 16mm and outer diameter from 12mm to 508mm. These pipes can be equipped with different thread types such as STC, LTC, BC, XC and even BTC for different application environments.
L80 grade steel pipe is an intermediate grade steel pipe with moderate levels of elements including 9% chromium to provide high strength and suitable for high temperature and high pressure systems. API 5CT grade L80 casing is a controlled yield strength material with hardness testing requirements and is commonly used in wells in sour (hydrogen sulfide) environments. Casing sizes range from 114.3mm (4.5 inches) to 406.4mm (16 inches) and tubing sizes range from 26.7mm (1.05 inches) to 114.3mm (4.5 inches). L80 is a corrosion resistant casing steel grade. API grade L80 pipes include L80-1, L80-9Cr and L80-13Cr. L80-1 pipes are used in H2S environments, while L80-9Cr and L80-13Cr are used in CO2 environments.

Chemical Composition of API 5CT Grade L80 Steel Pipe

Grade	C≤	Si≤	Mn≤	P≤	S≤	Cr≤	Ni≤	Cu≤	Als≤
API 5CT L80	0.15-0.22	1.00	0.25-1.00	0.020	0.010	12.0-14.0	0.20	0.20	0.020

API 5CT GR. L80 Pipes Mechanical Analysis

Steel Grade	Yield Strength (Mpa)	Tensile Strength (Mpa)
API 5CT L80	552-655	≥655

API 5CT GR. L80 carbon Pipe Dimension Tolerance

Types of steel tubes	Outer Diameter		Wall Thickness
Cold-rolled tubes	Tube sizes (mm)	Tolerances (mm)	Tolerances (mm)
	114.3	0.79	12.5％

API 5CT L80 Casing