Curtain wall systems: Alloy steel tubes are used in curtain wall systems to support the exterior facade of buildings. The tubes must be able to withstand wind and other environmental factors, as well as the weight of the facade materials.

Handrails and guardrails: Alloy steel tubes are used in the construction of handrails and guardrails for stairs, walkways, and other elevated areas. The tubes must be able to withstand the weight of people leaning against them, as well as environmental factors such as wind and rain.