Seamless steel tubes – casing and tubing API API 5CT N80

Basic parameters

Product | Product application |
Standard
Dimensional standard
  • | Specification for casing and tubing.
TDC
  • | Specification for casing and tubing.
Steel grade
Surface coating
Dimensions
Dimensional table

Outside diameter
Wall thickness
Weight
Size
[inch]
[mm]
Size
[inch]
[mm]
[lbs/ft]
[kg/m]
TUBING (PLAIN END)
1,050
1,050
26,7
1,14
0,113
2,87
1,13
1,70
1,48
0,154
3,91
1,47
2,19
1,315
1,315
33,4
1,70
0,133
3,38
1,68
2,52
2,19
0,179
4,55
2,17
3,21
1,660
1,660
42,16
2,09
0,125
3,17
2,05
3,05
2,30
0,140
3,56
2,27
3,43
3,03
0,191
4,85
3,00
4,51
1,900
1,900
48,26
2,40
0,125
3,17
2,37
3,55
2,75
0,145
3,68
2,72
4,09
3,65
0,200
5,08
3,63
5,41
2 3/8
2,375
60,32
4,00
0,167
4,24
3,94
5,83
4,60
0,190
4,83
4,43
6,63
5,80
0,254
6,45
5,75
8,56
2 7/8
2,875
73,00
6,40
0,217
5,51
6,16
9,15
7,80
0,276
7,01
7,66
11,39
8,60
0,308
7,82
8,44
12,57
3 1/2
3,500
88,9
7,70
0,216
5,49
7,58
11,31
9,20
0,254
6,45
8,81
13,20
10,20
0,289
7,34
9,91
14,76
4
4,000
101,6
9,50
0,226
5,74
9,11
13,56
10,70
0,262
6,65
10,46
15,57
13,20
0,330
8,38
12,93
19,27
4 1/2
4,500
114,3
12,60
0,271
6,88
12,24
18,22
15,20
0,337
8,56
14,98
22,32
17,00
0,380
9,65
16,72
24,90
CASING (WITHOUT THREADING)
4 1/2
4,500
114,3
9,50
0,205
5,21
9,40
14,01
10,50
0,224
5,69
10,23
15,21
11,60
0,250
6,35
11,35
16,90
13,50
0,290
7,37
13,04
19,41
15,10
0,337
8,56
14,98
22,29

Notes:
Tubes of OD 2.063 in (52,4 mm), 5 inch (127 mm) and 5 1/2 inch (139,7 mm) upon agreement. Dimensions in brackets are from edition API 5CT – 2005.
Tolerance of dimensions:
OD < 4 1/2 inch = ± 0.79 mm ( ± 0.031 inch)
OD ≥ 4 1/2 inch = – 0,5 % +1,0 % OD
WT = – 12,5 % (+ limited by weight)
weight (1 tube) = –3,5 % +6,5 %

Chemical composition

C Si Mn P S Cr Ni
min 0 0
max 0.03 0.03
Mo Cu Al V Ti Nb Sn
min
max

Mechanical properties

Re (MPa) Re (ksi) Rm (MPa) Rm (ksi) A (%)
min 552 689 100 0
max - - 0 - -

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