A fence includes first elongated tubular members, each one of which is configured to extend vertically from ends of the first elongated tubular members positionable proximate to a support surface (e.g., the ground). The fence also includes second elongated tubular members extending between the first elongated tubular members, each of which is configured to extend parallel to the support surface. The fence further includes receivers defined by apertures formed in the first elongated tubular members, each of which extends outwardly from respective first elongated tubular members so that each one of the second elongated tubular members can be fixedly attached to corresponding ones of the first elongated tubular members. In some embodiments, one or more of the first elongated tubular members and/or the second elongated tubular members can have a circular cross-section. The second elongated tubular members can be fixedly attached the first elongated tubular members with and/or without welding.