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 труба для корпуса, API 5CT C90 type 1 tubing but also casing coupling, perforated pipe, and more.
API 5CT C90 Casing Tubing Color Code
| Имя |
Casing and piping |
| C90 Type1 |
A purple band |
API 5CT C90 Chemical Composition
| Оценка |
C |
Мн |
Мо |
Cr |
Ни |
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
| Класс |
Type |
Yield strength MPa |
Tensile strength min. MPa |
Total elongation under load % |
| C90 |
Type1
Type2 |
621-724 |
689 |
0.5 |
API 5CT C90 Tolerance
| Товар |
Допустимая погрешность |
| Внешний диаметр |
Корпус трубы |
D≤101,60 мм ± 0,79 мм |
| D≥114,30 мм + 1,0% |
| -0.5% |
| Толщина стенки |
-12.5% |
| Уайт |
Одноместный номер |
+6.5%+3.5% |
| Общая масса |
-1.75 |
API 5CT C90 Size Chart
| Внешний диаметр |
Толщина стенки |
Масса |
Класс |
С шнековым механизмом |
Длина |
| в |
мм |
кг/м |
lb/фут |
| 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 |