[ Problem Point ]
We were looking for a shrink ring heater to use for waterproofing copper pipes.
[ ⇒Kaizen Point ]
We used a carbon ring heater CFRH.
The absorption wavelength was compatible, so the heat shrink tube shrunk immediately.
It became a waterproofing protection measure for copper pipes.
Related page:
No.5 Waterproof protection for PVC pipes 
No.6 Waterproof protection for glass tubes 
No.4 Corrosion protection for aluminum pipes 
No.7 Mechanical protection of resin rods 
No.3 Decorating stainless steel pipes 
No.8 twig decoration 
No.1 Wire bundling 
No.2 Rust and corrosion prevention of reinforcing bars