viga I (n)

I-Träger (Profile) (m)

I-beam (n)

In the case of cranes, I-beams are often used directly as the runway for under-running trolleys.

In structures comprising I-beams, connections must have non-positive joints.

I-beams (double-T beams) are often used as structural elements in supporting structures.

rolled steel joist (profiles) (n)

轧钢工字梁（剖面图） (n)