Home - Products -

Casing Pipe

Grades of Casing:

API 5CT J55/K55/N80/L80-1/L80-9Cr/L80-13Cr/P110/Q125/K55 D10/L80 D10


Sizes of Casing:

Diameter :from 4 1/2 inch  to 20 inch  (48.26mm - 508mm)

Nominal Weight: from 9.5 lb/ft  to 169 lb/ft

from 9.5 ppf  to 169 ppf

Lenght: R1, R2, R3


Types of Casing:

Seamless casing

ERW casing

Casing nipple

Casing coupling


Coating

3PP Coating
3PE Coating
FBE Coating
Epoxy Coating
Special Painting

Applications:

oil well extracting casing
borehole casing
borewell casing


Connection:

BTC, STC, LTC, NUE, EUE



Dimension Tolerance of casing pipe

Types of steel tubes
Outer Diameter
Wall Thickness
Cold-rolled tubes
Tube sizes(mm)
Tolerances(mm)
Tolerances(mm)
<114.3
±0.79
-12.5%
≥114.3
-0.5%,+1%


Chemical Composition of casing pipe

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 of casing pipe

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 - -

Oil casing is used to support the oil, gas wells of steel pipe, in order to ensure the drilling process and the completion of the entire well after the normal operation. Each well has several layers of casing depending on the drilling depth and geology. Casing down to use cement cementing, it and the tubing, drill pipe is different, can not be reused, a one-time consumption of materials. Therefore, the casing of the total consumption of more than 70% of the wells. Casing according to the use can be divided into: catheter, surface casing, casing technology and oil casing.


P110 Grade


N80 Grade


J55 Grade

Casing Size Casing Coupling Nominal Weight Inside Diameter
OD
OD LB/FT ID
INCH
INCH PPF INCH
4 1/2" (4.500) 5.000" 9.50      lb/ft (ppf) 4.090"
5.000"
10.50    lb/ft (ppf) 4.052"
5.000"
11.60    lb/ft (ppf) 4.000"
5.000"
13.50    lb/ft (ppf) 3.920"
5" 5.563" 11.50    lb/ft (ppf) 4.560"
5.563"
13.00    lb/ft (ppf) 4.494"
5.563"
15.00    lb/ft (ppf) 4.408"
5.563"
18.00    lb/ft (ppf) 4.276"
5 1/2" (5.500) 6.050" 14.00    lb/ft (ppf) 5.012"
6.050"
15.50    lb/ft (ppf) 4.950"
6.050"
17.00    lb/ft (ppf) 4.892"
6.050"
20.00    lb/ft (ppf) 4.778"
6.050"
23.00    lb/ft (ppf) 4.670"
6 5/8" (6.625) 7.390" 20.00    lb/ft (ppf) 6.049"
7.390"
24.00    lb/ft (ppf) 5.921"
7.390"
28.00    lb/ft (ppf) 5.791"
7.390"
32.00    lb/ft (ppf) 5.675"
7" 7.656" 17.00    lb/ft (ppf) 6.538”
7.656"
20.00    lb/ft (ppf) 6.456"
7.656"
23.00    lb/ft (ppf) 6.366"
7.656"
26.00    lb/ft (ppf) 6.276"
7.656"
29.00    lb/ft (ppf) 6.184"
7.656"
32.00    lb/ft (ppf) 6.094"
7.656"
35.00    lb/ft (ppf) 6.004"
7.656"
38.00    lb/ft (ppf) 5.920"
7 5/8" (7.625) 8.500“ 20.00    lb/ft (ppf) 7.125"
8.500”
24.00    lb/ft (ppf) 7.025"
8.500"
26.40    lb/ft (ppf) 6.969"
8.500"
29.70    lb/ft (ppf) 6.875"
8.500"
33.70    lb/ft (ppf) 6.765"
8.500"
39.00    lb/ft (ppf) 6.625"
8 5/8" (8.625) 9.625" 24.00    lb/ft (ppf) 8.097
9.625"
28.00    lb/ft (ppf) 8.017"
9.625"
32.00    lb/ft (ppf) 7.921"
9.625"
36.00    lb/ft (ppf) 7.825"
9.625"
40.00    lb/ft (ppf) 7.725"
9.625"
44.00    lb/ft (ppf) 7.625"
9.625"
49.00    lb/ft (ppf) 7.511"
9 5/8" (9.625) 10.625" 29.30    lb/ft (ppf) 9.063"
10.625”
32.30    lb/ft (ppf) 9.001"
10.625“
36.00    lb/ft (ppf) 8.921"
10.625“
40.00    lb/ft (ppf) 8.835“
10.625”
43.50    lb/ft (ppf) 8.755”
10.625
47.00    lb/ft (ppf) 9.681”
10.625
53.50    lb/ft (ppf) 8.835"
10 3/4" (10.750) 11.750 32.75    lb/ft (ppf) 10.192"
11.750”
40.50    lb/ft (ppf) 10.050“
11.750“
45.50    lb/ft (ppf)

9.950”

11.750”
51.00    lb/ft (ppf) 9.850”
11.750“
55.50    lb/ft (ppf) 9.760“
11.750”
60.70    lb/ft (ppf) 9.660”
11.750“
65.70    lb/ft (ppf) 9.560“
11 3/4" (11.750) 12.750” 42.00    lb/ft (ppf) 11.084”
12.750“
47.00    lb/ft (ppf) 11.000“
12.750”
54.00    lb/ft (ppf) 10.880”
12.750“
60.00    lb/ft (ppf) 10.772“
13 3/8" (13.375) 14.375" 48.00    lb/ft (ppf) 12.715”
14.375"
54.50    lb/ft (ppf) 12.615“
14.375"
61.00    lb/ft (ppf) 12.515”
14.375"
68.00    lb/ft (ppf) 12.415“
14.375"
72.00    lb/ft (ppf) 12.347"
16" 17.000"
65.00    lb/ft (ppf) 15.250"
17.000" 75.00    lb/ft (ppf) 15.124"
17.000"
84.00    lb/ft (ppf) 15.010"
18 5/8" (13.375) 20.000" 87.50    lb/ft (ppf) 17.755"
20" 21.000"
94.00    lb/ft (ppf) 19.124"
21.000"
106.50  lb/ft (ppf) 19.000"
21.000"
133.00  lb/ft (ppf) 18.730"
21.000"
169.00  lb/ft (ppf) 18.376"



Mexico
L80 EUE
3 1/2" 9.3ppf
80,000 Meters
Columbia
J-55 (or K-55)
20",94.0 LB/FT, BTC, R3
10500 feet
UAE
K-55,N80
13-3/8", 68 ppf SMLS, BTC, R3
9-5/8", 47 ppf SMLS, BTC, R3
9560 meters

Nigeria
N80
9-5/8" 47lb/ft R1
105000 feet(project)

United States
P110,J55
Ø 339,72 х 13,06 mm R3
Ø 426 х 10 mm, BTC,R3
2077 Tons

Zambia
API GRADE L-80,SEAMLESS
7 IN.35 PPF DRIFT :5.875 IN 
6000 Joints
Nigeria
AISI 4140 L80
10-3/4", 40.50PPF 30 FEET LONG
2000 Nos
Jordan
H- 40
14" O.D,45.61 Ib/ft, Range II, wt:0,312"
2700 meters



The United Arab Emirates
J55, N80 Connection BTS
18-5/8", 87 ppf
13-3/8", 72 ppf
369.52 Tons
Nigeria
H-40,J55
20" CSG 94 Lb/ft, BTC with thread protectors, Range 3
13 3/8" CSG 68 Lb/ft Grade J-55, BTC, Range 3
396 Joints
Vietnam
J55, 
13 3/8" #54.5 PPF, BTC, R3, 4000MTRS
9 5/8", #36PPF, BTC, R3, 2000MTRS

Venezuela
K55
9-5/8" 47lb/ft R118 5/8",11.05 mm,BTC,3500 m

The United Arab Emirates
P110,J55P110 grade, VAM TOP
4.1/2” OD, 15.1 ppf
1.5m long
425 EA

Nigeria
7 "23 ppf K55 R3 BTC 67 jts
6"; thickness 5mm, length 6m : amount 126 pipes
9 5/8"; thickness 6mm; length 12m  : amount 80 pipes
Irap
P110
9-7/8", 62.8ppf Vam Top Thread Range3 14000 Feet
7" 29ppf,+/-40ft,Vam Top Range 3 3000 Feet
Oman
K55
10 3/4", 40.5 PPF, 12 meters length, Qty 155 pcs
8 5/8" K55 32 PPF, 12 meters length, Qty 270 pcs



casing pipe
Copyright @2017 Hunan Standard Steel Co.,Ltd and Husteel Industry Group All Rights Reserved
  

We use cookies to offer a better browsing experience, analyze site traffic, and personalize content. By using this site, you agree to our use of cookies.

Accept
Decline