The Manchester Tank propane cylinder conforms to DOT and NFPA-58 specifications and is triple tested with dry pneumatic air and steel shot blasted prior to painting. The Manchester Tank propane cylinder has powder coat paint for maximum rust protection and a handle-EZ collar design-the only collar with a built-in, formed handle with no sharp edges. Every Manchester Tank propane cylinder includes consumer warning decals that are easy to read for your protection. 20# cylinders are purged and ready to fill.