China Wholesale St37 Iron Suppliers - Oil Well Casing Tube Manufacturer – Zhongshun

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China Wholesale St37 Iron Suppliers - Oil Well Casing Tube Manufacturer – Zhongshun Detail:

Standard	Grade	Tensile Strength（MPa）	Yield Strength（MPa）	Elongation（%）	Hardness
API SPEC 5CT	J55	≥517	379～552	0.5%	≤241HB
	K55	≥655	379~552	0.5%
	N80	≥689	552~758	0.5%
	L80（13Cr）	≥655	552~655	0.5%
	P110	≥862	758~965	0.6%

Chemical Composition of oil well casing:100% bullet tests include ultrasound inspection of full length wall thickness, full length drift diameter, water pressure test, mechanical test (yield, tensile, hardness) etc.
100% final product tests include connection inspection; weld quality inspection and insulation performance tests.

Standard

Grade

Composition（%）

AIs

API SPEC 5CT

J55K55

0.34～0.39

0.20～
0.35

1.25～1.50

≤0.020

≤0.015

≤0.15

≤0.20

≤0.020

(37Mn5)

N80

0.34～0.38

0.20～
0.35

1.45～1.70

≤0.020

≤0.015

≤0.15

0.11
～0.16

≤0.020

(36 Mn2V)

L80(13Cr)

0.15～0.22

≤1.00

0.25～1.00

≤0.020

≤0.010

12.0～
14.0

≤0.20

≤0.020

P110

0.26～0.35

0.17～
0.37

0.40～0.70

≤0.020

≤0.010

0.80～
1.10

≤0.20

0.15
～0.25

≤0.08

≤0.020

(30CrMo)

Labels		Outside diameter	T&C	Wall thickness	Type of end-finish
Labels		(d/mm)	(kg/m)	(t/mm)	Type of end-finish
1	2				J55/K55	M65	L80/R95	N80-1/Q	C90/T95	P110	Q125
2004/1/2	9.5	114.3	14.14	5.21	PS	PS	-	-	-	-	-
	10.5	114.3	15.63	5.69	PSB	PSB	-	-	-	-	-
	11.6	114.3	17.26	6.35	PSLB	PLB	PLB	PLB	PLB	PLB	-
	13.5	114.3	20.09	7.37	-	PLB	PLB	PLB	PLB	PLB	-
	15.1	114.3	22.47	8.56	-	-	-	-	-	PLB	PLB
5	11.5	127	17.11	5.59	PS	PS	-	-	-	-	-
	13	127	19.35	6.43	PSLB	PSLB	-	-	-	-	-
	15	127	22.32	7.52	PSLB	PLB	SLB	PLB	PLB	PLB
	18	127	26.79	9.19	-	PLB	SLB	PLB	PLB	PLB	PLB
	21.4	127	31.85	11.1	-	PLB	PLB	PLB	PLB	PLB	PLB
	23.2	127	34.53	12.14	-	-	PLB	PLB	PLB	PLB	PLB
	24.1	127	35.87	12.7	-	-	PLB	PLB	PLB	PLB	PLB
2005/1/2	14	139.7	20.83	6.2	PS	PS	-	-	-	-	-
	15.5	139.7	23.07	6.98	PSLB	PSLB	-	-	-	-	-
	17	139.7	25.3	7.72	PSLB	PLB	PLB	PLB	PLB	PLB	-
	20	139.7	29.76	9.17	-	PLB	PLB	PLB	PLB	PLB	-
	23	139.7	34.23	10.54	-	PLB	PLB	PLB	PLB	PLB	PLB
	26.8	139.7	39.88	12.7	-	-	-	-	P	-	-
	29.7	139.7	44.2	14.27	-	-	-	-	P	-	-
	32.6	139.7	48.52	15.88	-	-	-	-	P	-	-
	35.3	139.7	52.53	17.45	-	-	-	-	P	-	-
	38	139.7	56.55	19.05	-	-	-	-	P	-	-
	40.5	139.7	60.27	20.62	-	-	-	-	P	-	-
	43.1	139.7	64.14	22.22	-	-	-	-	P	-	-
2006/5/8	20	168.28	29.76	7.32	PSLB	PSLB	-	-	-	-	-
	24	168.28	35.72	8.94	PSLB	PLB	PLB	PLB	PLB	PLB	-
	28	168.28	41.67	10.59	-	PLB	PLB	PLB	PLB	PLB	-
	32	168.28	47.62	12.06	-	-	PLB	PLB	PLB	PLB	PLB
7	17	177.8	25.3	5.87	-	-	-	-	-	-	-
	20	177.8	29.76	6.91	PS	PS	-	-	-	-	-
	23	177.8	34.23	8.05	PSLB	PLB	PLB	PLB	PLB	-	-
	26	177.8	38.69	9.19	-	PLB	PLB	PLB	PLB	PLB	-
	29	177.8	43.16	10.36	-	PLB	PLB	PLB	PLB	PLB	-
	32	177.8	47.62	11.51	-	PLB	PLB	PLB	PLB	PLB	-
	35	177.8	52.09	12.65	-	-	PLB	PLB	PLB	PLB	PLB
	38	177.8	56.55	13.72	-	-	PLB	PLB	PLB	PLB	PLB
	42.7	177.8	63.55	15.88	-	-	-	-	P	-	-
	46.4	177.8	69.05	17.45	-	-	-	-	P	-	-
	50.1	177.8	74.56	19.05	-	-	-	-	P	-	-
	53.6	177.8	79.77	20.62	-	-	-	-	P	-	-
	57.1	177.8	84.98	22.22	-	-	-	-	P	-	-
2007/5/8	24	193.68	35.72	7.62	-	-	-	-		-	-
	26.4	193.68	39.29	8.33	PSLB	PSLB	PLB	PLB	PLB	-	-
	29.7	193.68	44.2	9.52	-	PLB	PLB	PLB	PLB	PLB	-
	33.7	193.68	50.15	10.92	-	PLB	PLB	PLB	PLB	PLB	-
	39	193.68	58.04	12.7	-	-	PLB	PLB	PLB	PLB	PLB
	42.8	193.68	63.69	14.27	-	-	PLB	PLB	PLB	PLB	PLB
	45.3	193.68	67.42	15.11	-	-	PLB	PLB	PLB	PLB	PLB
	47.1	193.68	70.09	15.88	-	-	PLB	PLB	PLB	PLB	PLB
	51.2	193.68	76.2	17.45	-	-	-	-	P	-	-
	55.3	193.68	82.3	19.05	-	-	-	-	P	-	-
2007/3/4	46.1	196.85	68.61	15.11	-	-	P	P	P	P	P
2008/5/8	24	219.08	35.72	6.71	PS	PS	-	-	-	-	-
	28	219.08	41.67	7.72		PS	-	-	-	-	-
	32	219.08	47.62	8.94	PSLB	PSLB	-	-	-	-	-
	36	219.08	53.58	10.16	PSLB	PSLB	PLB	PLB	PLB	PLB	-
	40	219.08	59.53	11.43	-	PLB	PLB	PLB	PLB	PLB	-
	44	219.08	65.48	12.7	-	-	PLB	PLB	PLB	PLB	-
	49	219.08	72.92	14.15	-	-	PLB	PLB	PLB	PLB	PLB
2009/5/8	32.3	244.48	48.07	7.92	-	-	-	-	-	-	-
	36	244.48	53.58	8.94	PSLB	PSLB	-	-	-	-	-
	40	244.48	59.53	10.03	PSLB	PSLB	PLB	PLB	PLB	-	-
	43.5	244.48	64.74	11.05	-	PLB	PLB	PLB	PLB	PLB	-
	47	244.48	69.95	11.99	-	PLB	PLB	PLB	PLB	PLB	PLB
	53.5	244.48	79.62	13.84	-	-	PLB	PLB	PLB	PLB	PLB
	58.4	244.48	86.91	15.11	-	-	PLB	PLB	PLB	PLB	PLB
	59.4	244.48	88.4	15.47	-	-	-	-	P	-	-
	64.9	244.48	96.58	17.07	-	-	-	-	P	-	-
	70.3	244.48	104.62	18.64	-	-	-	-	P	-	-
	75.6	244.48	112.51	20.24	-	-	-	-	P	-	-
2010/3/4	32.75	273.05	48.74	7.09	-	-	-	-	-	-	-
	40.5	273.05	60.27	8.89	PSB	PSB	-	-	-	-	-
	45.5	273.05	67.71	10.16	PSB	PSB	-	-	-	-	-
	51	273.05	75.9	11.43	PSB	PSB	PSB	PSB	PSB	PSB	-
	55.5	273.05	82.6	12.57	-	PSB	PSB	PSB	PSB	PSB	-
	60.7	273.05	90.33	13.84	-	-	-	-	PSB	PSB	PSB
	65.7	273.05	97.77	15.11	-	-	-	-	PSB	PSB	PSB
	73.2	273.05	108.94	17.07	-	-	-	-	P	-	-
	79.2	273.05	117.87	18.64	-	-	-	-	P	-	-
	85.3	273.05	126.94	20.24	-	-	-	-	P	-	-
2011/3/4	42	298.45	62.5	8.46	-	-	-	-	-	-	-
	47	298.45	69.95	9.53	PSB	PSB	-	-	-	-	-
	54	298.45	80.36	11.05	PSB	PSB	-	-	-	-	-
	60	298.45	89.29	12.42	PSB	PSB	PSB	PSB	PSB	PSB	PSB
	65	298.45	96.73	13.56	-	-	P	P	P	P	P
	71	298.45	105.66	14.78	-	-	P	P	P	P	P
2013/3/8	48	339.72	71.43	8.38	-	-	-	-	-	-	-
	54.5	339.72	81.11	9.65	PSB	PSB	-	-	-	-	-
	61	339.72	90.78	10.92	PSB	PSB	-	-	-	-	-
	68	339.72	101.2	12.19	PSB	PSB	PSB	PSB	PSB	PSB	-
	72	339.72	107.15	13.06	-	-	PSB	PSB	PSB	PSB	PSB
16	65	406.4	96.73	9.53	-	-	-	-	-	-	-
	75	406.4	111.62	11.13	PSB	PSB	-	-	-	-	-
	84	406.4	125.01	12.57	PSB	PSB	-	-	-	-	-
	109	406.4	162.21	16.66	P	-	P	P	-	P	P
2018/5/8	87.5	473.08	130.22	11.05	PSB	PSB	-	-	-	-	-
20	94	508	139.89	11.13	PSLB	PSLB	-	-	-	-	-
	106.5	508	158.49	12.7	PSLB	PSLB	-	-	-	-	-
	133	508	197.93	16.13	PSLB	-	-	-	-	-	-

* P – plain end, S – short round thread, B – buttress, L – long round thread

Name	J55	K55	N80-1	N80-Q	L80-1	P110
Casing	a bright green band	two bright green bands	a bright red band	a bright red band + a green band	a red band + a brown band	a bright white band
Coupling	entire green coupling + a white band	entire green coupling	entire red coupling	entire red coupling + a green band	entire red coupling + a brown band	entire white coupling

Casing-Tube
casing-pipe
casing-tubing

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