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.

 

Standard

Grade

Chemical composition

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

A1s

API SPEC 5CT

J55/K55

0.34~0.39

0.20~0.35

1.25~1.50

≤ 0.020

≤0.015

≤0.15

≤0.20

≤0.20

≤0.020

N80

0.34~0.38

0.20~0.35

1.45~1.70

≤0.020

≤0.015

≤0.15

0.11~0.16

≤0.020

L80

0.15~0.22

≤1.00

0.25~1.00

≤0.020

≤0.010

12.0~14.0

≤0.20

≤0.20

≤0.020

P110

0.26~0.35

0.17~0.37

0.40~0.70

≤0.020

≤0.010

0.80~1.10

≤0.20

≤0.20

0.15~0.25

≤0.08

≤0.020