A system for assembling drilling tubulars, comprising a tiering rack system configured to receive a plurality of sections of drilling tubulars and to selectively provide an individual drilling tubular section. A casing feed and bucking skid system coupled to the tiering rack system and configured to receive the individual drilling tubular section and to combine the individual drilling tubular section with a second individual drilling tubular section. A tubular delivery catwalk system coupled to the casing feed and bucking skid system and configured to receive the combined drilling tubular sections and to transport the combined drilling tubular sections to a drilling rig by elevating on at least two elevating supports.