CASING TUBE,CASING PIPE

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TUBING AND CASING PIPE

Casing Pipe are made from carbon steel. Oil casing tubing is used to extracting petroleum and natural gas from a well. Casing serves as wall of well.

CASING TUBE

Tolerance

 
Item
Tolerance
 
Out Diameter
 
D≤101.6mm+-0.79mm
D≥114.3mm+1.0%D-5%D
Coupling
+-1%D
WT
0-12.5%t
Weight
Single Lengths
+6.5%-3.5%
Carload Lots
0-1.75%

Mechanical Properties

 
 
 
Grade
Yield Strength
Tensil Strength
Hardness
Allowable Hardness
Variation
Min
Max
Min
Max
Psi
Mpa
Psi
Mpa
Psi
Mpa
Hrc
Bhn
Hrc
J55
55,000
379
80,000
552
75,000
517
-
-
-
K55
55,000
379
80,000
552
95,000
655
-
-
-
N80
80,000
552
80,000
758
100,000
689
-
-
-

Chemical Composition (%)

 
 
Grade
Chemical Composition
C
Si
Mn
P
S
Cr
Ni
Cu
V
Als
J55/K55
(37Mn5)
0.34-0.39
0.20-
0.35
1.25-
1.50
0.02
0.015
0.15
0.20
0.20
 
0.02
N80
(36Mn2V)
0.34-
0.38
0.25-
0.40
1.45-
1.70
0.02
0.015
0.15
0.20
0.20
0.11-
0.16
0.02


 

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