|
A
section of the tube approximately 100 mm in length shall stand
being flared with a tool having a 60 degree included angle
until the tube at the mouth of the flare has been expanded to
the percentages given below, without cracking.
|
Ratio
of inside diameter to outside diameter
|
Minimum
expansion of inside diameter %
|
|
0.9
|
21
|
|
0.8
|
22
|
|
0.7
|
25
|
|
0.6
|
30
|
|
0,5
|
39
|
|
0.4
|
51
|
|
0.3
|
68
|
|
