Laksteel Molding Square Tube Laksteel Molding Square Tube is available in Non colour and colour bonded Hi-tensile, and Soft (G550 and G350) and G.I material. This is for industrial, commercial and, domestic applications. Laksteel molding square tube ideally suitable for Aluminium, Partition frames, light weight frames and light weight structure. Product Specification Size (mm) 40 x 40 Tensil Strength G550 (Hi-ten) G350 (Soft) Coating Class AZ 150 Recommended total coated thickness 0.70mm, 0.47mm, 0.40mm and 0.35mm.