Supports shall be attached to structural steel.

支架应依附于结构钢。

Industrial structural steel, machinery and piping.

工业结构钢、机器及管道。

This is a high strength structural steel for the crane.

这是用于起重机的高强结构钢。

The steel plate is made of ordinary carbon structural steel.

镇静钢板是由普通碳素结构钢镇静钢热轧制成的钢板。

Molybdenum in structural steel can improve mechanical properties.

构造钢中参加钼，能进步机械性能。