U.S.
Pipe O.D.
Maximum Wall Thickness By Grade (Inch)
Recommended Bend
inch
X52
X56
X60
X65
X70
X80
X100
Degree per
Radius
Max Degree
Arc Foot
Feet
Per 40 Feet
36
2
2
2
2
2
2
1-3/4
0.50
115
12.75
38
2
2
2
2
2
2
1-9/16
0.50
115
12.75
40
2
2
2
2
2
1-3/4
1-3/8
0.50
115
12.75
42
2
2
2
2
1-13/16 1-9/16
1-3/16
0.50
115
12.75
44
2
2
1-15/16 1-3/4
1-5/8
1-3/8
1-1/16
0.50
115
12.75
46
2
1-7/8
1-11/16 1-9/16
1-7/16 1-1/4
1
0.50
115
12.75
48
1-13/16 1-11/16 1-9/16 1-7/16
1-5/16 1-1/8
7/8
0.50
115
12.75
METRIC
Pipe O.D.
Maximum Wall Thickness By Grade (Inch)
Recommended Bend
inch/mm X52
X56
X60
X65
X70
X80
X100
Ratio
Radius
Max Degree
Radius: O.D.
Meter
Per 12 Meters
36 / 914.4 50.80
50.80 50.80
50.80
50.80
50.80
44.45
38.3
35.05
12.75
38 / 965.2 50.80
50.80 50.80
50.80
50.80
50.80
39.69
36.3
35.05
12.75
40 / 1016 50.80
50.80 50.80
50.80
50.80
44.45
34.93
34.5
35.05
12.75
42 / 1066.8 50.80
50.80 50.80
50.80
46.04
39.69
30.17
32.9
35.05
12.75
44 / 1117.6 50.80
50.80 49.22
44.45
41.28
34.93
26.99
31.4
35.05
12.75
46 / 1168.4 50.80
47.63 42.87
39.69
36.52
31.75
25.40
30.0
35.05
12.75
48 / 1219.2 46.04
42.87 39.69
36.52
33.34
28.58
22.23
28.8
35.05
12.75
BENDING DATA
1,2,3,4,5 7,8,9,10