Propane Tanks Range in size from 5 to 100 lbs. Used in a variety of applications - domestic, recreational, commercial, and industrial. Conform with strict compliance to DOT specifications 4BA, 4BW, In addition, most cylinders conform and are approved under Transport Canada specifications 4BAM, 4BWM. Multiple testing procedures conducted for all cylinders. Steel shot blasted prior to painting. For maximum rust protection, all cylinders coated with Powder Coat Paint. Capacity gauges available in 20lb, 30lb, 40lb and 100lb cylinders. Cylinders are shrink-wrapped on pallets, or boxed individually, for protection and easy storage.