Cross members

Weathering steel used for container walls. A thin, stable rust layer on its surface protects the steel from deeper corrosion; good paint is still needed for appearance.

Ribbed steel walls that make a container strong despite thin plates. When cut for doors or windows, openings get a reinforcing steel frame.

Hollow steel blocks at all eight corners of a container: the points for lifting by crane, securing to a trailer and stacking.

A lock inserted into a corner casting and turned, to fix a container to a trailer or to another container when stacked.

Two slots in the base of a container (usually 20ft) for forklift tines, so the unit can be lifted without a crane.

The original container floor of thick, treated plywood (usually about 28 mm). In converted containers it is usually covered with vinyl, parquet or tiles.

Vertical bars on the container doors, turned with a handle to close the doors tightly.