Construction steel I beams connected

Illustrative representation showing construction

Construction site look up of steel beams

Steel beams, Port of Bilbao, Santurtzi. Biscay, Euskadi, Spain

Construction steel anchor bolts

U-shaped steel beams, Port of Bilbao, Santurtzi. Biscay, Euskadi, Spain

Steel framework, leisure centre under construction

Steel beams, Port of Bilbao, Santurtzi. Biscay, Euskadi, Spain

Steel construction anchor bolts

Construction crane and leisure centre under construction

Construction steel rebar

Steel framework, office block under construction

Antique Illustration (steel engraving) showing forms of Crystalization and related apparatus., 1857.

Industry & Technology -line art (w4) Iron and steel making A late 18th century forge Illustration

Antique Illustration (steel engraving) showing the construction of windlasses and cranes., 1857.

A team of builders at work

Two workers putting in building beams

Industry & Technology -line art (b4) Civil Engineering Excavating machinery A steel engraving from a series of early Victorian concept drawings of a tunnel beneath the River Thames in London, England.

Industry & Technology -line art (b4) Civil Engineering A steel engraving from a series of early Victorian concept drawings of a tunnel beneath the River Thames in London, England - men digging the tunnel.

A worker carrying a wooden plank and a hammer

An illustration of skilled workers

World War II propaganda poster of a team of men riveting the hull of a ship.

Construction steel I beams