API 5CT C110 Casing for Sour Service

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 C110 is a new grade added in the API 5CT  ninth version, it’s a controlled yield strength grade generally used in deeper sour condensate wells. SSCC testing is required for each heat to meet the threshold stress of 85% of the 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 C110 oilfield casing pipe, API 5CT C110 tubing but also casing coupling, perforated pipe, and more.

 

API 5CT C110 Casing Tubing Color Code

Name	Casing and piping
C110	A silver band

 

API 5CT C110 Chemical Composition

Grades	C	Mn	Mo	Cr	Ni	P	S
API C110	≤0.35	≤1.20	0.25~0.85	0.40~1.50	≤0.99	0.02	0.01
T95 Type2	≤0.50	≤1.90	/	/	≤0.99	0.02	0.01

 

API 5CT C110 Mechanical Property

Grade	Type	Yield strength MPa	Tensile strength min. MPa	Total elongation under load %
C110	/	655-758	724	0.5

 

API 5CT C110 Pipe 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 C110 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	C110	LTC/STC/BTC	R1/R2/R3
5″	127	17.11-35.86	11.50-24.10	C110	LTC/STC/BTC	R1/R2/R3
5 1/2″	139.7	20.83-34.23	14.00-23.00	C110	LTC/STC/BTC	R1/R2/R3
6 5/8″	168.28	29.76-35.72	20.00-24.00	C110	LTC/STC/BTC	R1/R2/R3
7″	177.8	25.30-56.55	17.00-38.00	C110	LTC/STC/BTC	R1/R2/R3
7 5/8″	193.68	35.72-63.69	24.00-42.80	C110	LTC/STC/BTC	R1/R2/R3
8 5/8″	219.08	35.72-72.92	24.00-49.00	C110	LTC/STC/BTC	R1/R2/R3
9 5/8″	244.48	48.07-86.91	32.30-58.40	C110	LTC/STC/BTC	R1/R2/R3
10 3/4″	273.05	48.73-97.77	32.75-65.70	C110	LTC/STC/BTC	R1/R2/R3
11 3/4″	298.45	62.50-89.29	42.00-60.00	C110	LTC/STC/BTC	R1/R2/R3
13 3/8″	339.72	71.43-107.15	48.00-72.00	C110	LTC/STC/BTC	R1/R2/R3