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Seamless casing pipes

Seamless casing pipes are used as the well wall of oil and gas wells while OCTG are used to pump oil or natural gas in oil wells.
Seamless casing pipes are different from ordinary seamless steel pipes. They are applied to relatively complex geological environments. The geological conditions are different and the stress state of the underground is complex.
The comprehensive action of tension, compression, bending and torsional stress acts on the pipe body, which puts forward higher requirements on the quality of the casing itself.
Product name: Seamless casing pipes, casing pipes, API 5CT pipe, casing steel pipe,Seamless casing tube
Materials: GR.B, X42, X52, X60, L245, L360, GR.B, X70, J55, K55, N80, L80, P110 etc.
Standard: API SPEC 5CT; API SPEC 5L etc.
Outer diameter: 11/2”-20”
Length:As per standard or as per customer’s requirement.
Product Details

Casing pipe is most often used in underground construction projects to encase or protect utility lines from being damaged. 
Once a well has been drilled, if it is to become a production well, the well must undergo completion. While drilling a well cuts through the rock formations and allows drilling engineers to reach the reservoir below, the raw sides of the well cannot support themselves. Similar to the bones of your spine protecting the spinal cord, casing is tubing that is set inside the drilled well to protect and support the wellstream.

1. Materials: H40, J55, K55, N80-1, N80-Q, L80-1,L80-9Cr, L80-13Cr, P110, Q125 etc
2. Executive standards: API 5CT, GB, ISO11960, GOST
3. Thread connection: NU, EU,IJ
4. Length: R1, R2, R3
5. Testing: NDT etc related rules of API 5CT and 5B
6:Type:seamless pipe
SizesOD
D
mm
Weight
kg/m
WT
t
mm
Type of end
H40J55
K55
M65L80
C95
N80
1、Q
C90
T95
P110Q125
12
12345678910111213
4-1/2

9.50
10.50
11.60
13.50
15.10
114.30
114.30
114.30
114.30
114.30
14.14
15.63
17.26
20.09
22.47
5.21
5.69
6.35
7.37
8.56
PS
-
-
-
-
PS
PSB
PSLB
-
-
PS
PSB
PLB
PLB
-
-
-
PLB
PLB
-
-
-
PLB
PLB
-
-
-
PLB
PLB
-
-
-
PLB
PLB
PLB
-
-
-
-
PLB
5

11.50
13.00
15.00
18.00
21.40
23.20
24.10
127.00
127.00
127.00
127.00
127.00
127.00
127.00
17.11
19.35
22.32
26.79
31.85
34.53
35.86
5.59
6.43
7.52
9.19
11.10
12.14
12.70
-
-
-
-
-
-
-
PS
PSLB
PSLBE
-
-
-
-
PS
PSLB
PLB
PLB
PLB
-
-
-
-
PLBE
PLBE
PLB
PLB
PLB
-
-
PLBE
PLBE
PLB
PLB
PLB
-
-
PLBE
PLBE
PLB
PLB
PLB
-
-
PLBE
PLBE
PLB
PLB
PLB
-
-
-
PLBE
PLB
PLB
PLB
5-1/2


14.00
15.50
17.00
20.00
23.00
26.80
29.70
32.60
35.30
38.00
40.50
43.10
139.70
139.70
139.70
139.70
139.70
139.70
139.70
139.70
139.70
139.70
139.70
139.70
20.83
23.07
25.30
29.76
34.23
39.88
44.20
48.51
52.53
56.55
60.27
64.14
6.20
6.98
7.72
9.17
10.54
12.70
14.27
15.88
17.45
19.05
20.62
22.22
PS
-
-
-
-
-
-
-
-
-
-
-
PS
PSLBE
PSLBE
-
-
-
-
-
-
-
-
-
PS
PSLB
PLB
PLB
PLB
-
-
-
-
-
-
-
-
-
PLBE
PLBE
PLBE
-
-
-
-
-
-
-
-
-
PLBE
PLBE
PLBE
-
-
-
-
-
-
-
-
-
PLBE
PLBE
PLBE
P
P
P
P
P
P
P
-
-
PLBE
PLBE
PLBE
-
-
-
-
-
-
-
-
-
-
-
PLBE
-
-
-
-
-
-
-
6-5/8
20.00
24.00
28.00
32.00
168.28
168.28
168.28
168.28
29.76
35.72
41.67
47.62
7.32
8.94
10.59
12.06
PS
-
-
-
PSLB
PSLBE
-
-
PSLB
PLB
PLB
-
-
PLBE
PLBE
PLBE
-
PLBE
PLBE
PLBE
-
PLBE
PLBE
PLBE
-
PLBE
PLBE
PLBE
-
-
-
PLBE
7


17.00
20.00
23.00
26.00
29.00
32.00
35.00
177.80
177.80
177.80
177.80
177.80
177.80
177.80
25.30
29.76
34.23
38.69
43.16
47.62
52.09
5.87
6.91
8.05
9.19
10.36
11.51
12.65
PS
PS
-
-
-
-
-
-
PS
PSLBE
PSLBE
-
-
-
-
PS
PLB
PLB
PLB
PLB
-
-
-
PLBE
PLBE
PLBE
PLBE
PLBE
-
-
PLBE
PLBE
PLBE
PLBE
PLBE
-
-
PLBE
PLBE
PLBE
PLBE
PLBE
-
-
-
PLBE
PLBE
PLBE
PLBE
-
-
-
-
-
-
PLBE
7

38.00
42.70
46.40
50.10
53.60
57.10
177.80
177.80
177.80
177.80
177.80
177.80
56.55
63.54
69.05
74.56
79.77
84.97
13.72
15.88
17.45
19.05
20.62
22.22
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PLBE
-
-
-
-
-
PLBE
-
-
-
-
-
PLBE
P
P
P
P
P
PLBE
-
-
-
-
-
PLBE
-
-
-
-
-
7-5/8


24.00
26.40
29.70
33.70
39.00
42.80
45.30
47.10
51.20
55.30
193.68
193.68
193.68
193.68
193.68
193.68
193.68
193.68
193.68
193.68
35.72
39.29
44.20
50.15
58.04
63.69
67.41
70.09
76.19
82.30
7.62
8.33
9.52
10.92
12.70
14.27
15.11
15.88
17.45
19.05
PS
-
-
-
-
-
-
-
-
-
-
PSLBE
-
-
-
-
-
-
-
-
-
PSLB
PLB
PLB
-
-
-
-
-
-
-
PLBE
PLBE
PLBE
PLBE
PLB
PLB
PLB
-
-
-
PLBE
PLBE
PLBE
PLBE
PLB
PLB
PLB
-
-
-
PLBE
PLBE
PLBE
PLBE
PLB
PLB
PLB
P
P
-
-
PLBE
PLBE
PLBE
PLB
PLB
PLB
-
-
-
-
-
-
PLBE
PLB
PLB
PLB
-
-
7-3/446.10196.8568.6015.11---PPPPP
8-5/8

24.00
28.00
32.00
36.00
40.00
44.00
49.00
219.08
219.08
219.08
219.08
219.08
219.08
219.08
35.72
41.67
47.62
53.57
59.53
65.48
72.92
6.71
7.72
8.94
10.16
11.43
12.70
14.15
-
PS
PS
-
-
-
-
PS
-
PSLBE
PSLBE
-
-
-
PS
PS
PSLB
PSLB
PLB
-
-
-
-
-
PLBE
PLBE
PLBE
PLBE
-
-
-
PLBE
PLBE
PLBE
PLBE
-
-
-
PLBE
PLBE
PLBE
PLBE
-
-
-
-
PLBE
PLBE
PLBE
-
-
-
-
- PLBE
9-5/8

32.30
36.00
40.00
43.50
47.00
53.50
58.40
59.40
64.90
70.30
75.60
244.48
244.48
244.48
244.48
244.48
244.48
244.48
244.48
244.48
244.48
244.48
48.07
53.57
59.53
64.73
69.94
79.62
86.91
88.40
96.58
104.62
112.50
7.92
8.94
10.03
11.05
11.99
13.84
15.11
15.47
17.07
18.64
20.24
PS
PS
-
-
-
-
-
-
-
-
-
-
PSLB
PSLBE
-
-
-
-
-
-
-
-
-
PSLB
PSLB
PLB
PLB
-
-
- -
-
-
-
PLBE
PLBE
PLBE
PLBE
PLB
-
-
-
-
-
-
PLBE
PLBE
PLBE
PLBE
PLB
-
-
-
-
-
-
PLBE
PLBE
PLBE
PLBE
PLB
P
P
P
P
-
-
-
PLBE
PLBE
PLBE
PLB
-
-
-
-
-
-
-
-
PLBE
PLBE
PLB
-
-
-
-
10-3/4

32.75
40.50
45.50
51.00
55.50
60.70
65.70
273.05
273.05
273.05
273.05
273.05
273.05
273.05
48.74
60.27
67.71
75.90
82.59
90.33
97.77
7.09
8.89
10.16
11.43
12.57
13.84
15.11
PS
PS
-
-
-
-
-
-
PSB
PSBE
PSBE
-
-
-
-
PSB
PSB
PSB
PSB
-
-
-
-
-
PSBE
PSBE
-
-
-
-
-
PSBE
PSBE
-
-
-
-
-
PSBE
PSBE
PSBE
PSB
-
-
-
PSBE
PSBE
PSBE
PSB
-
-
-
-
-
PSBE
PSB
10-3/4

73.20
79.20
85.30
273.05
273.05
273.05
108.93
117.86
126.94
17.07
18.64
20.24
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
P
P
P
-
-
-
-
-
-
11-3/4

42.00
47.00
54.00
60.00
65.00
71.00
298.45
298.45
298.45
298.45
298.45
298.45
62.50
69.94
80.36
89.29
96.73
105.66
8.46
9.53
11.05
12.42
13.56
14.78
PS
-
-
-
-
-
-
PSB
PSB
PSB
-
-
-
PSB
PSB
PSB
-
-
-
-
-
PSB
P
P
-
-
-
PSB
P
P
-
-
-
PSB
P
P
-
-
-
PSB
P
P
-
-
-
PSB
P
P
13-3/8

48.00
54.50
61.00
68.00
72.00
339.72
339.72
339.72
339.72
339.72
71.43
81.10
90.78
101.19
107.15
8.38
9.65
10.92
12.19
13.06
PS
-
-
-
-
-
PSB
PSB
PSB
-
-
PSB
PSB
PSB
-
-
-
-
PSB
PSB
-
-
-
PSB
PSB
-
-
-
PSB
PSB
-
-
-
PSB
PSB
-
-
-
-
PSB
16

65.00
75.00
84.00
109.00
406.40
406.40
406.40
406.40
96.73
111.61
125.01
162.21
9.53
11.13
12.57
16.66
PS
-
-
-
-
PSB
PSB
P
-
PSB
PSB
-
-
-
-
P
-
-
-
P
-
-
-
-
-
-
-
P
-
-
-
P
18-5/887.50473.08130.2111.05PSPSBPSB-----
20

94.00
106.50
133.00
508.00
508.00
508.00
139.89
158.49
197.93
11.13
12.70
16.13
PSL
-
-
PSLB
PSLB
PSLB
PSLB
PSLB
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Remarks: P——Plain end;S—Short round thread;L—Long round thread;B—Buttress thread;E—Extreme-line.

Note: other premium connection shall be provided as per customer requirements.

Seamless casing pipe quality inspection:

1. Our factory has its own "experimental testing center".CNAS Laboratory Accreditation Certificate

2.Control quality strictly.The first pass is the quality inspection on the production line,The second pass is full inspection of the  production quality .

3.We have got internationally recognized certificates, ISO, CE, LR,Philippine certificate,also support third-party testing,as SGS, BV, ect.

Seamless casing pipes feature

Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore.It is inserted into a well bore and cemented in place to protect both subsurface formations and the well bore from collapsing and to allow drilling fluid to circulate and extraction to take place. Steel casing pipe have smooth wall & minimum yield strength of 35,000 psi

seamless casing pipes seamless casing pipe supplier seamless casing pipe manufacturer

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