T-Drill F-200, Instruction Manual

Page: 94 / 98

INSTRUCTION MANUAL
94
Determination of the outer diameter of the flange
The outer diameter D
4
of the flange is obtained as indicated in the following figure
20 60 100 140 180 220
O.D. / mm
10
20
30
40
Δ d / mm
50
1
2
D = O.D. + Δ d
4
1. O.D.< 50mm Δ d = 20* 0,047*O.D.
2. O.D. ≥ 50mm Δ d = 30* 0,02*O.D.
4
The outer diameter of the flange
The wall thicknesses of the flanged pipe end
The wall-thicknesses of the flanged pipe end: S
0
= the original wall-thickness
of the pipe, r = the inner radius of the bent area, D
2
= the running measure of
the diameter, D
4
=outer diameter of the flange, s
r
≈ 1…1,1 * s
0
, s
1
≈ 1…0,9 * s
0
, s
2
≥ (O.D./D2)* s
0
, s
4
≥ (O.D./D
4
)* s
0