This annealing oxide layer on DI pipe and fittings, much like the patina on copper, is so thin it’s hardly measurable but serves to avoid further pitting or degradation on the metallic in common ambient disorders. ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​... https://getsocialsource.com/story3162145/the-definitive-guide-to-hoover-dynamic-next-advance-dxc10tce-10kg-condenser-tumble-dryer-graphite