API 5CT Petroleum Casing Coupling Material

Coupling material, Tubing & Casing Pipe

API 5CT Petroleum Casing Coupling Material

The petroleum casing coupling material is a type of pipe use for manufacturing petroleum casing couplings. As a one-time steel pipe use to support the wellbore of oil and gas wells, its consumption accounts for over 70% of the oil well pipes.The chemical composition of this material includes elements such as 0.31% – 0.35% of carbon, 0.20% – 0.35% of silicon, and 1.45% – 1.60% of manganese. The production process adopts processes such as converter smelting, refining furnace refining, continuous casting and rolling. Some technical schemes adjust the micro-alloying components of vanadium and nitrogen to enable the steel to meet performance indicators such as yield strength of 379 – 552 MPa and tensile strength of ≥ 655 MPa without requiring tempering.

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sales@imristeel.com

Phone:

+86 13646172523

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Product Detail

Chemical Component

Product Detail

Product Name:

API 5CT Petroleum Casing Coupling Material

Standard:

API 5CT

Grade:

H40,J55,K55,N80-1,N80Q,R95,L80-1,L80-13Cr,C90,T95,C110,P110,Q125

Thickness:

3.5-60mm

Shape:

Round

Outer Diameter:

Ф114.3 – 406 mm

Place of Origin:

Inner Mongolia, China

Usage:

Manufacturing oil casing couplings

Surface Treatment:

Hot Rolled

Tolerance:

WT: -12.5%

End:

Plain

End Protector:

HDPE crash cap or customized

length:

R1, R2, R3

Brand:

Baotou steel

Delivery Time:

Normally within 30-45 days and according to the quantity.

Chemical Component(API 5CT)

Grade	Type	C		Mn		Mo		Cr		Ni	Cu	P	S	Si
Grade	Type	Min	Max	Min	Max	Min	Max	Min	Max	Max	Max	Max	Max	Max
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
H40												0.030	0.030	一
J55												0.030	0.030	一
K55												0.030	0.030
N80	1											0.030	0.030	一
N80	Q											0.030	0.030	一
R95	一	一	0.45	一	1.90	一	一	一	一	一	一	0.030	0.030	0.45
L80	1	一	0.43	一	1.90	一	一	一	一	0.25	0.35	0.030	0.030	0.45
L80		一	0.15	0.30	0.60	0.90	1.10	8.00	10.0	0.50	0.25	0.020	0.010	1.00
L80	13Cr	0.15	0.22	0.25	1.00	一	一	12.0	14.0	0.50	0.25	0.020	0.010	1.00
C90	1	一	0.35	—	1.20	0.25	0.85	—	1.50	0.99	一	0.020	0.010	一
T95	1	一	0.35	一	1.20	025	0.85	0.40	1.50	0.99	一	0.020	0.010	一
C110	一	一	0.35	一	1.20	0.25	1.00	0.40	1.50	0.99	一	0.020	0.005	一
P110												0.030	0.030	一
Q125	1	一	0.35		1.35	一	0.85	一	1.50	0.99	一	0.020	0.010	一

Mechanical Property(API 5CT)

Grade	Type	Total under load Elongation %	Yield strength megapascal		Tensile strength megapascal	Hardness a, C Maximum			Specified OD mm	Allowable hardness Variation
Grade	Type	Total under load Elongation %	Min	Max	Min	HRC	HBW		Specified OD mm	HRC
H40	–	0.5	276	552	414	–	–		–	–
J55	–	0.5	379	552	517	–	–		–	–
K55	–	0.5	379	552	655	–	–		–	–
N80	1	0.5	552	758	689	–	–		–	–
N80	Q	0.5	552	758	689	–	–		–	–
R95		0.5	655	758	724	–	–		–	–
L80	1	0.5	552	655	655	23.0	241		–	–
L80	3Cr	0.5	552	655	655	23.0	241		–	–
L80	9Cr	0.5	552	655	655	23.0	241		–	–
L80	13Cr	0.5	552	655	655	23.0	241		–	–
C90	–	0.5	621	724	689	25.4		255	≤12.70	3.0
									12.71 to 19.04	4.0
									19.05 to 25.39	5.0
									≥25.40	6.0
T95	–	0.5	655	758	724	25.4		255	≤12.70	3.0
									12.71 to 19.04	4.0
									19.05 to 25.39	5.0
									≥25.40	6.0
C110	–	0.7	758	828	793	29		279	≤12.70	3.0
									12.71 to 19.04	4.0
									19.05o to 25.39	5.0
									≥25.40	6.0
P110	–	0.6	758	965	862	–		–	–	–
Q125	–	0.65	862	1034	931	b		–	≤12.70	3.0
									12.71 to 19.04	4.0
									≥19.05	5.0