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                                                                                                                                                                                                                                                                                                                seamless steel casing pipes, seamless drill pipe
                              

Standard:	API 5CT	Steel Grade:	K55 J55 N80 L80 P110
Structure:	Seamless	Section Shape:	Round
Application:	Oil Industry	Technique:	Hot Rolled
Material:	Alloy Steel	Country Of Origin:	China (mainland)

Standard:	API 5CT
Steel Grade:	K55 J55 N80 L80 P110
Structure:	Seamless
Section Shape:	Round
Application:	Oil Industry
Technique:	Hot Rolled
Material:	Alloy Steel
Country Of Origin:	China (mainland)

J55 K55 Precision Seamless Steel Casing Pipes

API 5CT J55 K55 Precision Seamless Steel Casing Pipes

Features:

1. Length range R3
2. API 5CT seamless pipe

Technical specification:

Size	Linear Mass lb/ft	Outside Diameter		Wall Thickness		Type of end-finish
		inch	mm	inch	mm	Grade
		inch	mm	inch	mm	J-55 K-55	M-65	L-80 C-95	N-80 1,Q	P-110
4 1/2''	9.5	4.5	114.3	0.205	5.21	PS	PS	-	-	-
	10.5	4.5	114.3	0.224	5.69	PSB	PSB	-	-	-
	11.6	4.5	114.3	0.25	6.35	PSLB	PLB	PLB	PLB	PLB
	13.5	4.5	114.3	0.29	7.37	--	PLB	PLB	PLB	PLB
	15.1	4.5	114.3	0.337	8.56	--	-	-	-	PLB
5''	11.5	5	127	0.22	5.59	PS	PS	-	-	-
	13	5	127	0.253	6.43	PSLB	PSLB	-	-	-
	15	5	127	0.296	7.52	PSLB	PLB	PLB	PLB	PLB
	18	5	127	0.362	9.19	--	PLB	PLB	PLB	PLB
	21.4	5	127	0.437	11.1	--	PLB	PLB	PLB	PLB
	23.2	5	127	0.478	12.14	--	-	PLB	PLB	PLB
	24.1	5	127	0.5	12.7	--	-	PLB	PLB	PLB
5 1/2''	14	5.5	139.7	0.244	6.2	PS	PS	-	-	-
	15.5	5.5	139.7	0.275	6.98	PSLB	PSLB	-	-	-
	17	5.5	139.7	0.304	7.72	PSLB	PLB	PLB	PLB	PLB
	20	5.5	139.7	0.361	9.17	--	PLB	PLB	PLB	PLB
	23	5.5	139.7	0.415	10.54	--	PLB	PLB	PLB	PLB
	26.8	5.5	139.7	0.5	12.7	--	-	-	-	-
	29.7	5.5	139.7	0.562	14.27	--	-	-	-	-
	32.6	5.5	139.7	0.625	15.87	--	-	-	-	-
	35.3	5.5	139.7	0.687	17.45	--	-	-	-	-
	38	5.5	139.7	0.75	19.05	--	-	-	-	-
	40.5	5.5	139.7	0.812	20.62	--	-	-	-	-
	43.1	5.5	139.7	0.875	22.23	--	-	-	-	-
6 5/8''	20	6.625	168.28	0.288	7.32	PSLB	PSLB	-	-	-
	24	6.625	168.28	0.352	8.94	PSLB	PLB	PLB	PLB	PLB
	28	6.625	168.28	0.417	10.59	--	PLB	PLB	PLB	PLB
	32	6.625	168.28	0.475	12.06	--	--	PLB	PLB	PLB
7 3/4''	46.1	8.625	219.08	0.595	15.11	-	-	P	P	P
8 5/8''	24	8.625	219.08	0.264	6.71	PS	PS	-	-	-
	28	8.625	219.08	0.304	7.72	-	PS	-	-	-
	32	8.625	219.08	0.352	8.94	PSLB	PSLB	-	-	-
	36	8.625	219.08	0.4	10.16	PSLB	PSLB	PLB	PLB	PSLB
	8.625	219.08	0.45	11.43	-	PLB	PLB	PLB	PLB	-
	44	8.625	219.08	0.5	12.7	-	-	PLB	PLB	PLB
	49	9.625	244.28	0.557	14.15	-	-	PLB	PLB	-
9 5/8''	32.3	9.625	244.48	0.312	7.92	-	-	-	-	-
	36	9.625	244.48	0.352	8.94	PSLB	PSLB	-	-	-
	40	9.625	244.48	0.395	10.03	PSLB	PSLB	PLB	PLB	PLB
	43.5	9.625	244.48	0.435	11.05	-	PLB	PLB	PLB	PLB
	47	9.625	244.48	0.472	11.99	-	PLB	PLB	PLB	PLB
	53.5	9.625	244.48	0.545	13.84	-	-	PLB	PLB	PLB
	58.4	9.625	244.48	0.595	15.11	-	-	PLB	PLB	-
	59.4	9.625	244.48	0.609	15.57	-	-	-	-	-
	64.9	9.625	244.48	0.672	17.07	-	-	-	-	-
	70.3	9.625	244.48	0.734	18.64	-	-	-	-	-
	75.6	9.625	244.48	0.797	20.24	-	-	-	-	-
10 3/4''	32.75	10.75	273.05	0.279	7.09	-	-	-	-	-
	40.5	10.75	273.05	0.35	8.89	PSB	PSB	-	-	-
	45.5	10.75	273.05	0.4	10.16	PSB	PSB	-	-	-
	51	10.75	273.05	0.45	11.43	PSB	PSB	PSB	PSB	PSB
	55.5	10.75	273.05	0.468	12.57	-	PSB	PSB	PSB	PSB
	60.7	10.75	273.05	0.545	13.84	-	-	-	-	PSB
	65.7	10.75	273.05	0.595	15.11	-	-	-	-	PSB
	73.2	10.75	273.05	0.672	17.07	-	-	-	-	-
	79.2	10.75	273.05	0.734	18.64	-	-	-	-	-
	85.3	10.75	273.05	0.797	20.24	-	-	-	-	-
11 3/4''	42	11.75	298.45	0.333	8.46	-	-	-	-	-
	47	11.75	298.45	0.375	9.53	PSB	PSB	-	-	-
	54	11.75	298.45	0.435	11.05	PSB	PSB	-	-	-
	65	11.75	298.45	0.534	13.56	-	-	P	P	P
	71	11.75	298.45	0.582	14.78	-	-	P	P	P
13 3/8''	48	13.375	339.73	0.33	8.38	-	-	-	-	-
	54.5	13.375	339.73	0.38	9.65	PSB	PSB	-	-	-
	61	13.375	339.73	0.43	10.92	PSB	PSB	-	-	-
	68	13.375	339.73	0.48	12.19	PSB	PSB	PSB	PSB	PSB
	72	13.375	339.73	0.514	13.06	-	-	PSB	PSB	PSB
18 5/8''	87.5	18.625	473.08	0.435	11.05	PSB	PSB	-	-	-
20''	94	20	508	0.438	11.13	PSLB	PSLB	-	-	-
	106.5	20	508	0.5	12.7	PSLB	PSLB	-	-	-
	133	20	508	0.635	16.13	PSLB	-	-	-	-

Casing pipe descriptions:

Casing seamless pipe is mainly used for supporting the wall of the well during and after the drilling to ensure

the drilling process and the normal operation of the entire well after completion. The oil casing pipe is the

lifeline for maintaining the operation of the oil well.

J55 K55 Precision Seamless Steel Casing Pipes 0

Mechanical properties:

Grade	Yield Strength				Tensile Strenght		Hardness		Allowable
	Min		Max		Min	Max	Max		Hardness
	Psi	Mpa	Psi	Mpa	Psi	Mpa	HRC	BHN	Variation
J55	55,000	379	80,000	552	75,000	517	-	-	-
K55	55,000	379	88,000	552	95,000	655	-	-	-
N80	80,000	552	110,000	758	100,000	689	-	-	-
N80-1	80,000	552	95,000	655	95,000	655	23	241	-
C90	90,000	621	105,000	724	100,000	689	25.4	255	3
C95	95,000	655	110,000	758	105,000	724	-	-	-
T95	95,000	655	110,000	758	105,000	724	25.4	255	3
P110	110,000	758	140,000	965	125,000	862	-	-	-