widos 3511 - Welding Log and Tables; Table for PP; Table for PVDF

Kunststoffschweißtechnik
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20.08.14 Working instructions WIDOS 3511 Page 22 of 39
6. Welding log and tables
Standard values for heating element socket welding of pipeline components at an ambient
temperature of 20° C (68° F) and at a moderate air flow.
Welding temperature for all procedures: 250° C - 270° C / 482° F – 518° F.
6.1. Table for PP
Pipe outside
diameter
Heat-up Change-over
(max. time)
Cool down
[mm] SDR 11,
SDR7,4
SDR6
[s]
SDR 17,6
SDR17
[s]
[s] clamped
[s]
total
[min]
16 5 *) 4 6 2
20 5 *) 4 6 2
25 7 *) 4 10 2
32 8 *) 6 10 4
40 12 *) 6 20 4
50 18 *) 6 20 4
63 24 10 8 30 6
75 30 15 8 30 6
90 40 22 8 40 6
110 50 30 10 50 8
125 60 35 10 60 8
6.2. Table for PVDF
Pipe outside
diameter
Min. pipe wall
thickness -
Heat-up Change-over
(max. time)
Cool down
[mm] [mm] [s] [s] clamped
[s]
total
[min]
16 1,5 4 4 6 2
20 1,9 6 4 6 2
25 1,9 8 4 6 2
32 2,4 10 4 12 4
40 2,4 12 4 12 4
50 3 18 4 12 4
63 3 20 6 18 6
75 3 22 6 18 6
90 3 25 6 18 6
110 3 30 6 24 8
125**) 4 35 6 24 8