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Casing pipes are used for casing for oil and gas wells. Steel casing pipes and tubing are applied to furnishing and installing cased tunnels, where they indicate to pass other utilities or obstructions without open excavation. Steel casing pipes and tube have smooth wall and a minimum yield strength of 35,000 psi. Corrosion-proofing water-based paint is applied on the outside pipe surface to protect against atmospheric corrosion during transportation and storage. The pipes can be delivered with metal or composite caps at both ends for thread protection.Casing pipes are manufactured out of steel are smelted in the electric furnace, treated with synthetic slags and cast by continuous casters. The applied steel making process ensures the achievement of chemically pure steel with reference to sulphur and phosphor contents providing high tensile, ductility and corrosion resistance properties of pipes to be operated at low temperatures in various corrosion media. Pipes are heat-treated in a computerized walking beam furnace. Steel grades and heat treatment regimes applied allow high-strength pipe to be obtained.

 

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Tubing Specifications

Outside

Diameter
Wall

Thickness
Weight
Thread Form of Pipe End
Non-Upset
T&C
External Upset T&C
mm
in
mm
in
kg/m
lbs/ft
kg/m
lbs/ft
J55
L80
N80
C90
Pll0
60.3
2.375
7.24
0.167
5.96
4.00
PN
PN
PN
PN
4.83
0.190
6.85
4.60
7.00
4.70
PNU
PNU
PNU
PNU
PNU
6.45
0.254
8.64
5.80
8086
5.95
PNU
PNU
PNU
PNU
73.03
2.875
5.51
0.217
9.53
6.40
9.69
6.50
PNU
PNU
PNU
PNU
PNU
7.82
0.308
12.80
8.60
12.95
8.70
PNU
PNU
PNU
PNU
88.90
3,88.90
3.500
3.500
5.49
0.116
11.46
7.70
PN
PN
PN
PN
6.45
0.254
13.70
9.20
13.85
9.30
PNU
PNU
PNU
PNU
PNU
7.34
0.289
15.19
10.20
PN
PN
PN
PN
9.52
0.375
18.91
12.70
19.28
12.95
PNU
PNU
PNU
PNU
114.30
4.500
6.88
0.271
18.96
12.60
18.98
12.75
PNU
PNU
PNU
PNU

Tolerances


Outside Diameter Wall Thickness Weight Thread Form of Pipe End
mm in mm in kg/m lbs/fl J55, K55 L80C C95 N80 C90 PllO
117.30 4.500 5.69 0.224 15.63 10.50 PSB
6.35 0.250 17.27 11.60 PSLB PLB PLB PLB PLB
7.37 0.290 20.10 13.50 PLB PLB PLB PLB
8.56 0.337 22.48 15.10 PLB
127.00 5.00 5.59 0.220 17.12 11.50 PS
6.43 0.253 19.30 13.00 PSL
7.52 0.296 22.33 15.00 PSLB PLB PLB PLB PLB
9.19 0.362 26.80 18.00 PLB PLB PLB PLB
139.70 5.500 6.20 0.244 20.85 14.00 PS
6.98 0.275 23.09 15.50 PSLB
7.72 0.304 25.32 17.00 PLB PLB PLB PLB
9.17 0.361 29.79 20.00 PLB PLB PLB PLB
10.54 0.415 34.26 23.00 PS PLB PLB PLB PLB
177.80 7.00 5.87 0.213 25.32 17.00 PS
6.91 0.272 29.7+ 20.00 PSLB
8.05 0.317 34.26 23.00 PSLB PLB PLB PLB
9.19 0.362 38.73 26.00 PLB PLB PLB PLB
10.36 0.408 43.20 29.00 PLB PLB PLB PLB
11.51 0.453 47.66 32.00 PLB PLB PLB PLB
12.65 0.498 52.13 35.00 PLB PLB PLB PLB
13.72 0.540 56.60 38.00 PLB PLB PLB PLB
219.08 8.625 6.71 0.264 35.75 24.00 PS PLB PLB PLB
8.94 0.352 47.66 32.00 PSLB
10.16 0.400 53.62 36.00 PSLB
11.43 0.450 59.58 40.00 PLB PLB PLB PLB
12.70 0.500 65.54 44.00 PLB PLB PLB PLB
14.15 0.557 72.99 49.00 PLB PLB PLB PLB
244.48 9.625 8.94 0.352 53.62 36.00 PSLB PLB PLB PLB PLB
10.03 0.395 59.58 40.00 PSLB
11.05 0.435 64.79 43.50 PLB PLB PLB
11.99 0.472 70.00 47.00 PLB PLB PLB PLB
13.84 0.545 79.69 53.50 PLB PLB PLB PLB
273.05 10.750 8.89 0.350 60.32 40.50 PSB PLB PLB PLB PLB
10.16 0.400 67.78 45.50 PSB
11.43 0.450 75.96 51.00 PSB
12.57 0.495 72.67 55.50 PSB PSB PSB PSB
13.84 0.545 90.41 60.70 PSB PSB PSB PSB
15.11 0.595 97.86 65.70 PSB PSB
339.70 13.375 9.65 0.380 81.18 54.50 PSB PSB PSB
10.92 0.430 90.86 61.00 PSB
12.19 0.480 101.29 68.00 PSB PSB PSB PSB
13.06 0.514 107.24 72.00 PSB PSB PSB PSB