Products
OCTG Casing & Tubing
***Casing pipe lines the borehole. It is subject to axial tension by its dead weight, internal pressure by fluid purging, and external pressure by surrounding rock formations. Casing is particularly exposed to axial tension and internal pressure by the pumped oil or gas emulsion.
***Tubing is pipe through which the oil or gas is transported from the wellbore. Tubing segments are generally around 30 ft [9 m] long with a threaded connection on each end.
Information
Standard:API
& API 5CT
Standard:API 5CT
Grade:API J55-API
P110
Grade:API J55,
API K55, API N80, API L80, API ...
Thickness:4.8 -
22.22 mm
Section
Shape:Round
Outer
Diameter:60.3 - 610.00 mm
Connection: BTC, STC, LTC, NUE, EUE
Type: Seamless & ERW
Lengths: Ra nge
1,2 and 3
Technique:Hot
Rolled
Surface
Treatment:painted
Applications:
Used in oil well drilling.It is mainly used for drilling process and after
completion of borehole wall support, to ensure that the drilling process and
the whole Wells after completion are normal running .
Chemical Composition
Standard
Grade
Chemical
compositions（％）
API SPEC 5CT
J55
C
Si
Mn
P
S
Cr
Ni
Cu
Mo
V
K55
0.34～0.39
0.20～0.35
1.25～1.50
≤0.020
≤0.015
≤0.15
≤0.20
≤0.20
/
/
N80
0.34～0.38
0.20～0.35
1.45～1.70
≤0.020
≤0.015
≤0.15
/
/
/
0.11～0.16
L80
0.15～0.22
≤1.00
0.25～1.00
≤0.020
≤0.010
12.0～14.0
≤0.20
≤0.20
/
/
P110
0.26～0.395
0.17～0.37
0.40～0.70
≤0.020
≤0.010
0.80～1.10
≤0.20
≤0.20
0.15～0.25
≤0.08
Mechanical properties
Grade
Type
Total elongation
under load (%)
Yield strength
(min)
Yield strength
(max)
Tensile strength
min Mpa
Hardness Max (HRC)
Hardness Max(HBW)
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
-
-
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
C95
-
0.5
655
758
724
-
-
T95
-
0.5
655
758
724
25.4
255
P110
-
0.6
758
965
862
-
-
Q125
All
0.65
862
1034
931
-
-
|
Grade |
Type |
Total elongation under load (%) |
Yield strength (min) |
Yield strength (max) |
Tensile strength min Mpa |
Hardness Max (HRC) |
Hardness Max(HBW) |
|
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 |
- |
- |
|
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 |
|
C95 |
- |
0.5 |
655 |
758 |
724 |
- |
- |
|
T95 |
- |
0.5 |
655 |
758 |
724 |
25.4 |
255 |
|
P110 |
- |
0.6 |
758 |
965 |
862 |
- |
- |
|
Q125 |
All |
0.65 |
862 |
1034 |
931 |
- |
- |
Nice quality, Nice logistics.
___Malory （Czech Republic）
Price is very cheap.
___Kerwin （Egypt）
Good quality, but if the pipes are with paint, it will be better.
___Jason （South Africa）
Delivery is very timely.
___Pulitzer （Peru）
Contact
0086-731-85046579
0086-731-85046639
sales@hunsteel.comAdd∶ Hunan Steel Industrial Zone, Furong
Special District, Changsha City, Hunan, CHINA
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