Marine container fixed fittings are structural components permanently attached to the container body, typically at the corners, side rails, and end frames. These include corner castings, fork lift pockets, twistlock slots, lashing rings, and stacking cones. Unlike loose fittings, fixed fittings are integral to the container’s design and provide standardized interfaces for lifting, stacking, securing, and handling during intermodal transport. Their robust construction ensures repeatable engagement with handling equipment and securing systems, playing a vital role in container integrity and safe cargo movement.