1. Unique shape:

The specification of the Rectangular Hollow Section by LEFIN STEEL is from 20*30--1500*1000MM(Size), 1.2--50MM(Wall thickness); the specification of the Square Hollow Section is from 20*20--1200*1200MM(Size), 1.3--50MM(Wall thickness). 

2. For material utilization rate:

3. Modular design: