Oil Casing Size
OD
Nominal
weight
Thickness
Inner
Diameter
Diameter
Collar
Thread
Diameter Type Grade
Round
Thread
BCSG
Round
Thread
BCSG
Round
Thread
BCSG
Round
Thread
BCSG
Length
Round
Thread
BCSG
Round
Thread
BCSG
Round
Thread
Round
Thread
Round
Thread
Note:
Oil casing produce standard:API 5CT
Size:60.3--508mm
Grade:J55、K55、N80、L-80、P-110、C-90、C-95、T-95 etc.
Processing button type:STC,LTC,BTC etc.
Oil Casing Pipe Grade Color Standard
Grade color standard
Grade
Pipe and short section
Coupling
H40
Not Mark or black belt
as same as pipe
J55 oil pipe
A bright green belt
The coupling bright green
J55 casing
pipe
A bright green belt
The coupling bright green
and a white belt
K55
Two bright green belts
The coupling bright green
M65
A green belt and a blue
belt
Using the coupling L80
grade 1
N80 grade 1
A red belt
The coupling red
N80 grade Q
A red belt and green belt
The coupling red and a
green belt
L80 grade 1
A red belt and a brown
belt
The coupling red and a
brown belt
L80 grade9CR
A red belt,a brown belt
and two yellow belts
The coupling red and two
yellow belts
L80 grade13CR
A red belt,a brown belt
and a yellow belt
The coupling red and a
yellow belt
C90 grade 1
A purple belt
The coupling purple
C90 grade 2
A purple belt and a
yellow belt
The coupling purple
and a yellow belt
T95 grade 1
A silvery belt
The coupling silvery
T95 grade 2
A slivery belt and a
yellow belt
The coupling slivery
and a yellow belt
C95
A brown belt
The Coupling brown
P110
A white belt
The coupling white
Q125 grade 1
A orange belt
The coupling orange
Q125 grade 2
A orange belt and a
yellow belt
The coupling orange
and a yellow belt
Q125 grade 3
A orange belt and a
green belt
The coupling orange
and a green belt
Q125 grade 4
A orange belt and a
brown belt
The coupling orange
and a brown belt
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