API 5CT M65 Oilfield Casing Pipe

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 M65 is a new grade added in the API  5CT new version. It’s is not used often and is the only steel grade among the general-purpose casing grades with the requirement of a restricted maximum hardness. WLD steel is a leading API 5CT casing and tubing manufacturer and supplier, we provide not only a broad range of API 5CT M65 oilfield casing and API 5CT M65 tubing but also casing coupling, perforated pipe and more.

API 5CT M65 Chemical Composition

Grade	C≤	Si≤	Mn≤	P≤	S≤	Cr≤	Ni≤	Cu≤	Mo≤	V≤
API 5CT M65	0.34-0.39	0.20-0.35	1.25-1.50	0.020	0.015	0.15	0.20	0.20	/	/

API 5CT M65 Mechanical Property

Steel Grade	Yield Strength (Mpa)	Tensile Strength (Mpa)	Hardness, HBW
API 5CT M65	448-586	≥586	235

API 5CT M65 Tolerance

Item		Allowable tolerance
Outer diameter	Pipe body	D≤101.60mm±0.79mm
		D≥114.30mm+1.0%
		-0.5%

API 5CT M65 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	M65	LTC/STC/BTC	R1/R2/R3
5″	127	17.11-35.86	11.50-24.10	M65	LTC/STC/BTC	R1/R2/R3
5 1/2″	139.7	20.83-34.23	14.00-23.00	M65	LTC/STC/BTC	R1/R2/R3
6 5/8″	168.28	29.76-35.72	20.00-24.00	M65	LTC/STC/BTC	R1/R2/R3
7″	177.8	25.30-56.55	17.00-38.00	M65	LTC/STC/BTC	R1/R2/R3
7 5/8″	193.68	35.72-63.69	24.00-42.80	M65	LTC/STC/BTC	R1/R2/R3
8 5/8″	219.08	35.72-72.92	24.00-49.00	M65	LTC/STC/BTC	R1/R2/R3
9 5/8″	244.48	48.07-86.91	32.30-58.40	M65	LTC/STC/BTC	R1/R2/R3
10 3/4″	273.05	48.73-97.77	32.75-65.70	M65	LTC/STC/BTC	R1/R2/R3
11 3/4″	298.45	62.50-89.29	42.00-60.00	M65	LTC/STC/BTC	R1/R2/R3
13 3/8″	339.72	71.43-107.15	48.00-72.00	M65	LTC/STC/BTC	R1/R2/R3