API 5CT Seamless Tubing & Casing
Standard: API 5CT
Specification :
Outside diameter : Tubing 2 3/8" to 4 1/2" (60mm-114.3mm)
Casing 4 1/2 "- 20." (114.3 - 508mm)
Wall thickness:5.21 – 16.13mm
Grade :J55 / K55/ N80 / L80 / P110
Length R1 R2 R3
Type of end - finish PE,STC,LTC,BTC.
Application:
used for extracting petroleum & natural gas. casing pipe serves as wall of well.
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Standard
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Grade
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Chemical composition
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C
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Si
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Mn
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P
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S
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Cr
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Ni
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Cu
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Mo
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V
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A1s
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|
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API SPEC 5CT
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J55/K55
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0.34~0.39
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0.20~0.35
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1.25~1.50
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≤ 0.020
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≤0.015
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≤0.15
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≤0.20
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≤0.20
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|
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≤0.020
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|
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N80
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0.34~0.38
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0.20~0.35
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1.45~1.70
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≤0.020
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≤0.015
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≤0.15
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|
|
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0.11~0.16
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≤0.020
|
|
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L80
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0.15~0.22
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≤1.00
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0.25~1.00
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≤0.020
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≤0.010
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12.0~14.0
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≤0.20
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≤0.20
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|
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≤0.020
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|
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P110
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0.26~0.35
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0.17~0.37
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0.40~0.70
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≤0.020
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≤0.010
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0.80~1.10
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≤0.20
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≤0.20
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0.15~0.25
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≤0.08
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≤0.020
|
|
