This is a demonstration of processing a stainless steel pipe into a heat-shrinkable tube using a carbon ring heater.
Please check the following site for more information.
Related page:
Heat shrink tube processing for electric wires 
Heat shrink tube processing of reinforcing bars 
No.3 Decorating stainless steel pipes 
The stainless pipe in a glass tube is heated with a halogen point heater 
Stainless steel pipe brazing 
Shrinkage of heat shrink tube with heat resistance of 200℃ 
Brazing of Stainless Steel Using Halogen Point Heater 
Heating dissolution of Stainless steel nails with a halogen point heater HPH-160 / f40