Butt welding

Heating element butt-welding of pipe dimension 160 mm

The range of plastic pipes made of fusiolen PP-R (80) comprises from cold-water pipe up to the patented faser composite pipe three different pipe series with an outside diameter from 16 mm to 125 mm.

Due to the increasing demand and the thus resulting inquiries, aquatherm now offers its well-known plastic pipe system also in dimension 160 mm.

The following Fusiotherm®-pipes series are available:

• Fusiotherm®-pipe SDR 11 for cold water
• Fusiotherm®-faser-composite pipe SDR 7.4
  (Pat.-No. 10018324, trademark protection no. 39926599 for green/dark green)

The new 160 mm pipes are especially well suitable for the transport of various media in the field of industrial or diverse chilled and hot applications. They can also be used for sanitary installations in big hotel and hospital buildings and in the shipbuilding industry.

Pipes and fittings are fused, as explained below, by butt welding:

1. Protect your place of work from weather influences
   
   
2. Check, if welding machine works properly and heat it up
   
   
3. Cut pipes into required length
   
   
4. Plastic pipes are aligned and fixed by means of the clamping elements
   
   
5. Use the plane for planning the pipes´ front to be plane-parallel
   
   
6. Remove the debris
   
   
7. Check if pipes match (allowance: max. 0.1 x wall thickness)
   
   
8. Check width of gap between the two pipes to be welded (allowance: max. 0.5 mm)
   
   
9. Check temperature of the heating element (210° C +/- 10° C)
   
   
10. Clean the heating element
    
    
11. When the bead of PP has reached the prescribed height (SDR 11 = 1 mm, SDR 7.4 = 1.5 mm), pressure is reduced. This marks the beginning of the heating time.
    
    
12. When heating time has expired, divide the machine slide, remove heating element quickly and join the pipes again (by putting both parts of the slide together).
    
    
13. The pipes are fused with the required welding pressure and cool down under pressure.
    
    
14. The welded connection can be unclamped - the welding process is finished.

Additionally please follow the instructions given in the operating manual of the welding machine and observe guideline DVS 2207, part 11.