STEEL TUBE FOR FILLING CONCRETE

摘要

PURPOSE: A steel pipe is provided to increase a total sectional area using a unit shape-steel member with a bent end. CONSTITUTION: A steel pipe is as follows. A plurality of unit shape-steel members are connected to each other, and an outer unit forms the look of a steel pipe(100). One end of the outer unit is bent to form a first contact unit. The other end of the outer unit is bent to form a second contact unit. The unit shape-steel member has an L-shaped cross section. The outer unit has an L-shaped cross section with a corner.