Vitreous Enamel steel pipe matt only has a male end and no female end. The male end must be installed facing downwards. Due to only having one tapered end this pipe can be easily cut and still used within a system, with the male end from the second piece going inside the cut end of the first piece.
Vitreous should always be installed 3 x the internal diameter away from any combustible materials.
Stove pipe should only be used as a connection piece and never used externally on any property.