Hot rolled ordinary I-steel also called the steel dyes, is sliver of steel products with I-shaped

section. Its section size expressed by waist high (h) (mm)× waist thick (d)(mm),

e.g. the waist high is 160mm, the leg width is 88mm, the waist thick is 6mm ,this I-steel can

be marked “I 160×88×6”, another mark for I-steel is indicated with the model, the waist

high(cm), like I16#. If they have same Waist high, but different waist thick and leg width,

then must add a, b, c right side the model distinguishes, like 32a#, 32b#, 32c# and so on.

(1) Ordinary I-steel (GB706-88, GB1591-79)

A. main use: widely used in each kind of building structure, bridge, vehicles, support, the

machinery and so on.

(2) Light I -steel (YB163-63)

Hot rolled light I-steel, compared with the ordinary I-steel, when they have the same waist

high, the leg is wide, the waist and the leg are thin, namely wide leg thin wall. In the

condition of guaranteeing bearing power, the light I-steel has better stability, also can save

metal, and has the good economic effect.

Main use: same with the ordinary I-steel, mainly used in the workshop, bridge, other large-scale structural element, the vehicle ship manufacture and so on.