The steel frame will be heavier than the aluminium frame but it will be less expensive.

A steel-framed beam reinforcing metal fixture capable of recovering the strength of a steel-framed beam larger than that of a conventional steel-framed beam reinforcing metal fixture for S-structure.

valve frame

steel frame of jambs of the sluice

A combined burglarproof door frame with wood surface and steel core comprises main door frame and steel protective frame (30).

The side frame members are made of a first steel material and the intermediate frame members made of a second steel material, which is different from the first steel material.

The water spray device comprises a steel frame which can move along the transverse track and nozzles fixed on the steel frame.

Frame (header frame) material: Recycled plastic or galvanized steel

a steel frame with a chrome-plated aluminium fork with suspension

The apparatus is linked to a steel frame through a rigid support.

Frame: rectangular steel profiles, lacquered in black.

Frame of molybdenum chrome steel, for use in the manufacture of cathode-ray tubes [1]

Frame of molybdenum chrome steel, for use in the manufacture of cathode-ray tubes [1]

Vertical steel structural reinforcements throughout

A heavy gauge steel block member is welded to a metallic center frame member of the first door and a heavy gauge steel plate member is welded to the center frame member of the second door.