China Wholesale St52 Steel Suppliers - API 5CT OCTG tubing Manufacturer – Zhongshun

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China Wholesale St52 Steel Suppliers - API 5CT OCTG tubing Manufacturer – Zhongshun Detail:

1. Dimension range (OD inch): 1-1/2”—-4 1/2”,

2. Dimension range (OD mm): 26.67—-114.3

3. Type of upset: NUE, EUE, Plain end.

4. Standard: API SPEC 5CT

5. Main Steel Grade: H40, J55, N80, N80Q, L80, L80-1, L80-9Cr, L80-13Cr, P110 etc.

6. Type of Tubing: Non-upset tubing (NU), External-upset tubing (EUE), Integrated Joint (IJ).

7，Length

length
Project	R1	R2	R3
Tubing	6.10-7.32m	8.53-9.75m	11.58-12.80m
Casing	4.88-7.62m	7.62-10.36m	10.36-14.63m

Standard

Grade

Composition（%）

AIs

API SPEC 5CT

J55K55

0.34～0.39

0.20～
0.35

1.25～1.50

≤0.020

≤0.03

≤0.15

≤0.20

≤0.020

(37Mn5)

N80

0.34～0.38

0.20～
0.35

1.45～1.70

≤0.020

≤0.03

≤0.15

0.11
～0.16

≤0.020

(36 Mn2V)

L80(1)

≤0.43

≤0.45

≤1.9

≤0.03

≤0.25

≤0.35

L80(9Cr)

≤0.15

≤1.00

0.3～0.60

≤0.020

≤0.030

8～
10.0

≤0.50

≤0.25

0.9 ～1.1

≤0.020

L80(13Cr)

0.15～0.22

≤1.00

0.25～1.00

≤0.020

≤0.030

12.0～
14.0

≤0.50

≤0.25

≤0.020

P110

0.26～0.35

0.17～
0.37

0.40～0.70

≤0.020

≤0.030

0.80～
1.10

≤0.20

0.15
～0.25

≤0.08

≤0.020

(30CrMo)

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%

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

Outside Diameter		Wall Thickness		Weight				Grade and Upset Type*
Outside Diameter		Wall Thickness		Non-Upset T&C		External Upset T&C		Grade and Upset Type*
(In.)	(mm)	(In.)	(mm)	(lb/ft)	(kg/m)	(lb/ft)	(kg/m)	J55	L80	N80	C90	P110
2-3/8	60.32	0.167	4.24	4.00	5.95	-	-	PN	PN	PN	PN	-
		0.190	4.83	4.60	6.85	4.70	6.99	PNU	PNU	PNU	PNU	PNU
		0.254	6.45	5.80	8.63	5.95	8.85	-	PNU	PNU	PNU	PNU
		0.336	8.53	7.35	10.94	7.45	11.09	PU	-	PU	PU	-
2-7/8	73.02	0.217	5.51	6.40	9.52	6.50	9.67	PNU	PNU	PNU	PNU	PNU
		0.276	7.01	7.80	11.61	7.90	11.76	-	PNU	PNU	PNU	PNU
		0.308	7.82	8.60	12.80	8.70	12.95	-	PNU	PNU	PNU	PNU
		0.340	8.64	9.35	13.91	9.45	14.06	-	PU	-	PU	-
		0.440	11.18	11.50	17.11	-	-	N	PN	-	PN	-
3-1/2	88.90	0.216	5.49	7.70	11.46	-	-	PN	PN	PN	PN	-
		0.254	6.45	9.20	13.69	9.30	13.84	-	PNU	PNU	PNU	PNU
		0.289	7.34	10.20	15.19	-	-	PN	PN	PN	PN	-
		0.375	9.52	12.70	18.91	12.95	19.27	-	PNU	PNU	PNU	PNU
4	101.60	0.226	5.74	9.50	14.14	-	-	PN	PN	PN	PN	-
4	101.60	0.262	6.65	-	-	11.00	16.37	PU	PU	PU	PU	-
4-1/2	114.30	0.271	6.88	12.60	18.75	12.75	18.97	PNU	PNU	PNU	PNU	-

* P – plain end, N – non-upset, U – external upset.

coupling
steel-coupling
API-5CT-tubing

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