... L5X5X5/16,L4X4X3/8,L3 1/2X3 1/2X 1/4,L3X3X1/4,L2 1/2X2 1/2X1/4,L2X2X5/16, ... , economical and beautiful advantages, easy to install. 1.We could design,manufacture ,and export following kinds ... of metal structure (light steel structure ) products: 1)Metal structure series, such as Portal Steel Frame, ... theatre, Steel structure halls Anchor Bolt High-Strength Bolt for metal building steel building