API 5CT L80 Casing Pipe for Sour Service

API 5CT L80 Specification

Outer Dimensions: 6.0mm -219.0mm

Wall Thickness: 1.0mm -30 mm

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

Thread type:Short round thread, Long round thread, Buttress thread

Application: Transportation of gas, water , oil and natural gas .

API 5CT is a specification for casing and tubing for petroleum and natural gas industries-used for wells. This Standard specifies the technical delivery conditions for steel pipes (casing, tubing and pup joints), coupling stock, coupling material and accessory material and establishes requirements for three Product Specification Levels (PSL-1, PSL-2, PSL-3). Grade L80 Casing Tubing is an API 5CT oil casing pipe and mostly utilized for oil well L80 is often used in wells under sour (H2S) environments with varied end connections such as non-upset ends or an external upset end.

There are three types for API 5CT L80 oilfield casing pipes: L80 type 1, L80 type 9Cr, and L80 type 13Cr. L80 type 1 is utilized during the H2S condition, while L80 type 9Cr and 13Cr are used for the CO2 application. WLD steel is a leading API 5CT casing and tubing manufacturer and supplier, we provide not only a broad range of API 5CT L80 oilfield casing pipe and API 5CT L80 tubing but also casing coupling, perforated pipe and more.

API 5CT Grade L80 Casing Tubing Color Codes

Name Casing Coupling
L80-1 A red band + a brown band Entire red coupling + a brown band

API 5CT L80 Chemical Composition

Grade C Si Mn P S Cr Ni Cu
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

API 5CT L80 Mechanical Property

Grades Yield Strength (Mpa) Tensile Strength (Mpa) Elongation under load, % Hardness, HRC
L80 type 1 552-655 655 0.5 23
L80 type 9Cr 552-655 655 0.5 23
L80 type 13Cr 552-655 655 0.5 23

API 5CT L80 Tolerance

Item Allowable tolerance
Outer diameter Pipe body D≤101.60mm±0.79mm
Wall thickness -12.5%
Wight Single piece +6.5%+3.5%
Total weight -1.75

API 5CT L80 Size Chart

Outer Diameter Wall Thickness Weight Grade Threaded Length
in mm kg/m lb/ft
4 1/2″ 114.3 14.14-22.47 9.50-11.50 L80 LTC/STC/BTC R1/R2/R3
5″ 127 17.11-35.86 11.50-24.10 L80 LTC/STC/BTC R1/R2/R3
5 1/2″ 139.7 20.83-34.23 14.00-23.00 L80 LTC/STC/BTC R1/R2/R3
6 5/8″ 168.28 29.76-35.72 20.00-24.00 L80 LTC/STC/BTC R1/R2/R3
7″ 177.8 25.30-56.55 17.00-38.00 L80 LTC/STC/BTC R1/R2/R3
7 5/8″ 193.68 35.72-63.69 24.00-42.80 L80 LTC/STC/BTC R1/R2/R3
8 5/8″ 219.08 35.72-72.92 24.00-49.00 L80 LTC/STC/BTC R1/R2/R3
9 5/8″ 244.48 48.07-86.91 32.30-58.40 L80 LTC/STC/BTC R1/R2/R3
10 3/4″ 273.05 48.73-97.77 32.75-65.70 L80 LTC/STC/BTC R1/R2/R3
11 3/4″ 298.45 62.50-89.29 42.00-60.00 L80 LTC/STC/BTC R1/R2/R3
13 3/8″ 339.72 71.43-107.15 48.00-72.00 L80 LTC/STC/BTC R1/R2/R3