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PP-R Installation Instructions
PP-R Installation Instructions
1、Tubing connects with pipe fitting by means of Hot-melting, while connecting to metallic conduit and watering utensil by using tubing carried with metal insert.
2、 Construction of Hot-melting welding has to use exclusive fuse machine to guarantee the quality of welding.
3、 Construction of welding should operates strictly according to technical parameters stated, and should inserts directly rather than moves pipe and fitting during the process of heating and connecting. The connecting surface of welding should have a well-distributed welding circle.
4、After the construction, tube sealing and appliance should proceeds after hydraulic test.
a) Shear the pipe according to required length by using pipe scissors. Cut place is perpendicular to the axis.
b) Label deep welding mark at the end of pipe.
c) Heat the pipe and fitting simultaneously by inserting them to the welding machine. Time is decided by specification of the tubing.
d) After reaching the stated heating time, take down the pipe and fitting off the welding machine and immediately connecting them. During the connection, avoid twist and deflection.
e) After welding, pipe and fitting become integrated and never leak.
Welding Data Table
Heating timeshould be increased by 50%,when the operating environment temperature is below 5 ℃
|
（mm）
DN |
（mm）
Welding Depth |
（sec.）
Heating Time |
（sec.）
Welding Time |
（min.）
Cooling Time |
|
16
|
13.0
|
5
|
4
|
2
|
|
20
|
14.0
|
5
|
4
|
2
|
|
25
|
15.0
|
7
|
4
|
2
|
|
32
|
16.5
|
8
|
6
|
4
|
|
40
|
18.0
|
12
|
6
|
4
|
|
50
|
20.0
|
18
|
6
|
4
|
|
62
|
24.0
|
24
|
8
|
6
|
|
75
|
30.0
|
31
|
10
|
8
|
|
90
|
32.0
|
40
|
10
|
8
|
|
110
|
38.5
|
56
|
15
|
10
|
|
125
|
|
|
|
|
|
140
|
|
|
|
|
|
160
|
|
|
|
|
Design and construction, refer to the standard in Shandong province building water supply polypropylene (pp-r) pipe engineering regulation DBJ14 - DS11-2001
