API 5CT is een specificatie voor casing en tubing voor de aardolie- en aardgasindustrie, gebruikt voor boorputten. Deze norm specificeert de technische leveringsvoorwaarden voor stalen buizen (casing, tubing en pup joints), koppelingsmateriaal, koppelingsmateriaal en hulpmateriaal en stelt eisen aan drie productspecificatieniveaus (PSL-1, PSL-2, PSL-3).
In the API 5CT version 9, the chapter “Manufacturing method and Chemical Composition Requirements” removed C95 steel grade and increased R95, C110 (seamless tube only). API Grade R95 has the same yield strength range and tensile strength as API T95 but without the requirement for SSC or hardness tests, generally not for use in condensate wells since no hardness restrictions is required. Steel grade R95 is a better-priced alternative to T95 in wells without the risk of sulfide stress cracking. WLD steel is a leading API 5CT casing and tubing manufacturer and supplier, we provide a broad range of API 5CT R95 oilfield mantelbuis, API 5CT R95 type1 tubing but also casing coupling, perforated pipe, and more.
API 5CT R95 Casing Tubing Color Code
Naam |
Mantel- en leidingwerk |
R95 |
A brown band |
API 5CT R95 Chemical Composition
Rang |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Mo |
R95 |
0.34-0.38 |
0.20-0.35 |
1.45-1.70 |
0.020 |
0.015 |
0.15 |
/ |
/ |
/ |
API 5CT R95 Mechanical Property
Rang |
Type |
Rekgrens MPa |
Treksterkte min. MPa |
Totale rek onder belasting % |
R95 |
/ |
552-758 |
689 |
0.5 |
API 5CT R95 Tolerance
Item |
Toegestane tolerantie |
Buitendiameter |
Pijpbehuizing |
D≤101.60mm±0.79mm |
D≥114.30mm+1.0% |
-0.5% |
Wanddikte |
-12.5% |
Wight |
Enkel stuk |
+6.5%+3.5% |
Totaal gewicht |
-1.75 |
API 5CT R95 Size Chart
Buitendiameter |
Wanddikte |
Gewicht |
Rang |
Schroefdraad |
Lengte |
in |
mm |
kg/m |
lb/ft |
4 1/2″ |
114.3 |
14.14-22.47 |
9.50-11.50 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |
5″ |
127 |
17.11-35.86 |
11.50-24.10 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |
5 1/2″ |
139.7 |
20.83-34.23 |
14.00-23.00 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |
6 5/8″ |
168.28 |
29.76-35.72 |
20.00-24.00 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |
7″ |
177.8 |
25.30-56.55 |
17.00-38.00 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |
7 5/8″ |
193.68 |
35.72-63.69 |
24.00-42.80 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |
8 5/8″ |
219.08 |
35.72-72.92 |
24.00-49.00 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |
9 5/8″ |
244.48 |
48.07-86.91 |
32.30-58.40 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |
10 3/4″ |
273.05 |
48.73-97.77 |
32.75-65.70 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |
11 3/4″ |
298.45 |
62.50-89.29 |
42.00-60.00 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |
13 3/8″ |
339.72 |
71.43-107.15 |
48.00-72.00 |
R95 |
LTC/STC/BTC |
R1/R2/R3 |