An Overview of the Myanmar-China Oil & Gas Pipelines: History, Benefits, and Challenges.

 API 5CT L80 casing Tubing Grade Color Codes
Grade Grade Type Number and Color of Bands for Product a with Length ³ 1.8 m Color(s) for Couplings
      Entire Coupling Band(s) b, c
1 2 3 4 5
H40 — None or black band at the manufacturer’s option None Same as for Pipe
J55 Tubing — One bright green Bright green None
J55 Casing — One bright green Bright green One white
K55 — Two bright green Bright green None
N80 1 One red Red None
N80 Q One red, one bright green Red Green
R95 — One brown Brown None
L80 1 One red, one brown Red One brown
L80 9Cr One red, one brown, two yellow None Two yellow
L80 13Cr One red, one brown, one yellow None One yellow
C90 1 One purple Purple None
T95 1 One silver Silver None
C110 — One white, two brown White Two brown
P110 — One white White None
Q125 1 One orange Orange None
a In the case of coupling Material, unless otherwise specified in the purchase agreement, the manufacturer’s internal requirements shall govern.
b Special clearance couplings shall also have a black band.
c Seal-ring couplings shall also have a blue band.

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