Aspen’s PX-Series (Petroleum Series) extreme duty trailers are designed for hauling skid mounted loads and construction equipment which primarily serve the Energy (Oilfield) industry and are suitable for both on road and off road applications. Configurations vary from payloads of 40 tons through 60 ton capacities, with axle configurations ranging from 8 through 11 axles (including truck axles). Aspen PX-Series trailers feature folding goosenecks with single drop and tail roll frames. PX-Series trailers can be configured with various deck widths and lengths including custom options. The PX-Series trailers have common air/regulated air suspensions or air-ride 8 wheels across (Wheelers). Transporter equalization is achieved by combinations of jeeps & boosters with common air/regulated air suspensions. Aspen’s PX-Series of trailers are available in specific regional configurations (mostly Western Canada) to maximize trailer configurations for specific regional regulations.