API Tubing

 
Tubing is the conduit through which oil and gas are brought from the producing formations to the field surface facilities for processing. Tubing must be adequately strong to resist loads and deformations associated with production and workovers.
 
Are you looking for Top Quality OCTG Casing & Tubing?
If you are looking for the best OCTG casing and tubing in the market, you can contact us Glory Tube, we provide competitive OCTG casing & tubing solutions for the Oil and Gas Industry.
With facilities in Wuxi China and Cangzhou China, Glory Tube can offer our clients worldwide the best possible pricing and expedited manner for OCTG casing and tubing with consistent high quality. From high pressure high temperature wells to sour gas applications, Glory Tube can offer the complete range of sizes and grades to suit every purpose.
 
Glory Tube can provide a full range of sizes and grades for every application.
 
Size of Tubing
Outer diameter (OD): Φ26.67mm ~ Φ114.30mm
Wall thickness (WT): 3.18mm ~ 9.52mm
 
Description
API series tubing refers to the steel pipe produced as per API SPEC 5CT of the American Petroleum Institute (API), which is used for the exploitation of petroleum oil or natural gas and other resources. Tubing is used to extract oil and natural gas from wells, casing is used as wall of oil and gas well bore.
 
Glory Tube is ideally positioned to deliver API and premium threaded tubing.
 
Glory Tube provides a complete service throughout the tubular cycle, combining the provision of tubulars, threaded accessories and connection threading. These items are critical to every stage of the exploration and production process.

The tubing in API standard provided by Glory Tube strictly follows the API 5CT standard in terms of quality control such as chemical composition, mechanical properties, and dimensional accuracy. Within the scope of the standard, all control indicators are tightened to make the performance more stable and the quality more reliable.

In terms of composition control, strict internal control requirements are implemented, and the P and S control levels of physical smelting are far stricter than the standard requirements of API 5CT. For products with corrosion resistance requirements, the strength range is strictly controlled, and the actual control level is near the midline of the strength requirements. For other steel grades, the yield strength control level is at the upper limit of the strength requirement range; in addition, the toughness performance of the material is much higher than the API 5CT standard requirement. Through the control of strength and toughness, the physical performance of the casing and tubing is guaranteed.
 
Chemical Composition, Mass Fraction(%)

Steel Grade	Type	C		Mn		Mo		Cr		Ni	Cu	P	S	Si
		Min	Max	Min	Max	Min	Max	Min	Max	Max	Max	Max	Max	Max
H40	-	-	-	-	-	-	-	-	-	-	-	0.02	0.01	-
J55	-	-	-	-	-	-	-	-	-	-	-	0.02	0.01	-
K55	-	-	-	-	-	-	-	-	-	-	-	0.02	0.01	-
N80	1	-	-	-	-	-	-	-	-	-	-	0.02	0.01	-
N80	Q	-	-	-	-	-	-	-	-	-	-	0.02	0.01	-
R95	-	0	0.45	0	1.9	-	-	-	-	-	-	0.02	0.01	0.45
M65	-	-	-	-	-	-	-	-	-	-	-	0.02	0.01	-
L80	1	0	0.43	0	1.9	-	-	-	-	0.25	0.35	0.02	0.01	0.45
L80	9 Cr	0	0.15	0.3	0.6	0.9	1.1	8	10	0.5	0.25	0.015	0.01	1
L80	13 Cr	0.15	0.22	0.25	1	-	-	12	14	0.5	0.25	0.015	0.01	1
C90	1	0	0.35	0	1.2	0.25	0.85	0	1.5	0.99	-	0.015	0.01	-
T95	-	0	0.35	0	1.2	0.25	0.85	0.4	1.5	0.99	-	0.015	0.005	-
C110	-	0	0.35	0	1.2	0.25	1	0.4	1.5	0.99	-	0.015	0.005	-
P110	-	-	-	-	-	-	-	-	-	-	-	0.02	0.01	-
Q125	1	0	0.35	0	1.35	0	0.85	0	1.5	0.99	-	0.015	0.005	-

Note:If the wall thickness is less than 17.78mm, the molybdenum content of the C90-1 steel grade has no lower limit.
 
Mechanical properties of Tubing

Grade	Type	Total elongation under load	Yield strength (MPa)		Tensile strength (MPa)	Hardness Max		Specified wall thickness	Allowable hardness variation
		m	min	max	min	HRC	HBW	mm	HRC
H40	-	0.5	276	552	517	-	-	-	-
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	241	-	-
L80	9Cr	0.5	552	655	655	23	241	-	-
L80	13Cr	0.5	552	655	655	23	241	-	-
C90	-	0.5	621	724	689	25.4	255	≤12.70 12.71-19.04 19.05-25.39 ≥25.40	3.0 4.0 5.0 6.0
C95	-	0.5	655	758	724	-	-	≤12.70 12.71-19.04 19.05-25.39 ≥25.40	3.0 4.0 5.0 6.0
T95	-	0.5	655	758	724	25.4	255	≤12.70 12.71-19.04 19.05-25.39 ≥25.40	3.0 4.0 5.0 6.0
C110	-	0.7	758	828	793	30	286	≤12.70 12.71-19.04 19.05-25.39 ≥25.40	3.0 4.0 5.0 6.0
P110	-	0.6	758	965	862	-	-	-	-
Q125	All	0.65	862	1034	931	-	-	≤12.70 12.71-19.04 ≥19.05	3.0 4.0 5.0

 
Tubing Size

Lables			Outside diameter	Nominal linear masses		Wall thickness	Type of end-finish
Size	NU T&C	EU T&C	mm	Non-upset T&C	External upset T&C		H40	J55	L80 1/9Cr/13Cr R95	N80 1&Q	C90	T95	P110
				Kg/m	Kg/m	mm
2-3/8	4	-	60.32	5.95	-	4.24	PN	PN	PN	PN	PN	PN	PN
2-3/8	4.6	4.7	60.32	6.85	6.99	4.83	PNU	PNU	PNU	PNU	PNU	PNU	PNU
2-3/8	5.8	5.95	60.32	8.63	8.85	6.45			PNU	PNU	PNU	PNU	PNU
2-3/8	7.35	7.45	60.32	10.94	11.09	8.53			PU		PU	PU	PU
2-7/8	6.4	6.5	73.02	9.52	9.67	5.51	PNU	PNU	PNU	PNU	PNU	PNU	PNU
2-7/8	7.8	7.9	73.02	11.61	11.76	7.01			PNU	PNU	PNU	PNU	PNU
2-7/8	8.6	8.7	73.02	12.8	12.95	7.82			PNU	PNU	PNU	PNU	PNU
2-7/8	9.35	9.45	73.02	13.91	14.06	8.64			PU		PU	PU
3-1/2	7.7	-	88.90	11.46	-	5.49	PN	PN	PN	PN	PN	PN
3-1/2	9.2	9.3	88.90	13.69	13.84	6.45	PNU	PNU	PNU	PNU	PNU	PNU	PNU
3-1/2	10.2	-	88.90	15.18	-	7.34	PN	PN	PN	PN	PN	PN
3-1/2	12.7	12.95	88.90	18.9	19.27	9.52			PNU	PNU	PNU	PNU	PNU
4	9.5	-	101.60	14.14	-	5.74	PN	PN	PN	PN	PN	PN
4	10.7	11	101.60	-	16.37	6.65	PU	PU	PU	PU	PU	PU
4-1/2	12.6	12.75	114.30	18.75	18.97	6.88	PNU	PNU	PNU	PNU	PNU	PNU
P: plain-end; N: Non-upset Threaded and Coupled; U: External upset Threaded and Coupled

 
Applied Standards
API Spec 5CT Casing and Tubing
API Spec 5B (16th Edition, December 2017) Threading, Gauging, and Inspection of Casing, Tubing, and Line Pipe Threads
ISO 11960:2014 Petroleum and natural gas industries — Steel pipes for use as casing or tubing for wells
GB/T 19830-2017 Petroleum and natural gas industries—Steel pipes for use as casing or tubing for wells
 
Covering API Spec 5CT PSL1, PSL2, PSL3
 
Grade
We can provide casing and tubing with various wall thicknesses including H40, J55, K55, M65, N80-1, N80-Q, L80-1, L80-9Cr, L80-13Cr, C90, C95, T95, P110, Q125, etc.
 
Application
Tubing: Pipe placed in a well to produce or inject fluids.