API 5CT C90 Type1 Casing for Sour Service

Specifations

  • 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);
  • Type: API 5CT C90 type 1;
  • 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).

API C90 type 1 is an API controlled yield strength grade generally used sour for service in condensate wells and the minimum threshold stress required is 80% of specified minimum yield strength. WLD steel is a leading API 5CT casing and tubing manufacturer and supplier, we provide a broad range of API 5CT C90 oilfield casing pipe, API 5CT C90 type 1 tubing but also casing coupling, perforated pipe, and more.

API 5CT C90 Casing Tubing Color Code

Name Casing and piping
C90 Type1 A purple band

API 5CT C90 Chemical Composition

Grades C Mn Mo Cr Ni P S
C90 Type1 ≤0.35 ≤1.20 0.25-0.85 1.50 ≤0.99 0.02 0.01
C90 Type2 ≤0.50 ≤1.90 / / ≤0.99 0.02 0.01

API 5CT C90 Mechanical Property

Grade Type Yield strength MPa Tensile strength min. MPa Total elongation under load %
C90 Type1

Type2

 621-724 689 0.5

API 5CT C90 Tolerance

Item Allowable tolerance
Outer diameter Pipe body D≤101.60mm±0.79mm
D≥114.30mm+1.0%
-0.5%
Wall thickness -12.5%
Wight Single piece +6.5%+3.5%
Total weight -1.75

API 5CT C90 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 C90 LTC/STC/BTC R1/R2/R3
5″ 127 17.11-35.86 11.50-24.10 C90 LTC/STC/BTC R1/R2/R3
5 1/2″ 139.7 20.83-34.23 14.00-23.00 C90 LTC/STC/BTC R1/R2/R3
6 5/8″ 168.28 29.76-35.72 20.00-24.00 C90 LTC/STC/BTC R1/R2/R3
7″ 177.8 25.30-56.55 17.00-38.00 C90 LTC/STC/BTC R1/R2/R3
7 5/8″ 193.68 35.72-63.69 24.00-42.80 C90 LTC/STC/BTC R1/R2/R3
8 5/8″ 219.08 35.72-72.92 24.00-49.00 C90 LTC/STC/BTC R1/R2/R3
9 5/8″ 244.48 48.07-86.91 32.30-58.40 C90 LTC/STC/BTC R1/R2/R3
10 3/4″ 273.05 48.73-97.77 32.75-65.70 C90 LTC/STC/BTC R1/R2/R3
11 3/4″ 298.45 62.50-89.29 42.00-60.00 C90 LTC/STC/BTC R1/R2/R3
13 3/8″ 339.72 71.43-107.15 48.00-72.00 C90 LTC/STC/BTC R1/R2/R3