Choose your Brand of Stove Pipe

Heatfab Saf-T-Pipe 22 ga. pipe is the best since it is seam welded and heavy gauge.
DuraBlack is mid-grade at 24 ga.
Snap-lock pipe is the least expensive but doesn't last nearly as long.
Single Wall Stove Pipe is used from the top of the woodstove or freestanding fireplace to the bottom of the ceiling or wall where it will connect to class-A chimney pipe or a masonry chimney.  Double Wall Stove Pipe will allow you closer clearances for applications that require it.  Follow manufacturer recommendations whenever applicable. Never use a chimney that is smaller in diameter than the flue size of the appliance it is being connected to. Never use stove pipe in place of a class A chimney system.

Installation Instructions for DuraBlack Stove Pipe - DuraBlack Brochure - Heatfab Saf-T-Pipe Brochure