2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/199898We review and investigate some basic properties of static, cylindrically symmetric spacetimes with non-zero cosmological constant, find non-singular sheet sources of these spacetimes and discuss their characteristics, and clarify their relation to the 4D black-string solutions.15 pages, 2 figuresGeneral Relativity and Quantum Cosmologytext