3030R aluminum profile. It is suitable for frame combination with less stress and strength. Its shape adopts fillet transition, and its surface is silvery white after anodic oxidation, which is elegant, beautiful and corrosion-resistant. Usually, three profiles are connected by plane machine bolts and three-dimensional corner connectors, and the ends of profiles need tapping. T-nuts or T-bolts of Euro 30 series can be used in the profile groove, which is firm and reliable.
4040R aluminum profile. It is suitable for frame combination and occasions with large stress. Usually, three profiles are connected by three-dimensional angle connectors and flat machine bolts, and the ends of profiles need tapping. In the profile groove, Euro 40 series M8 special T-bolt can be used to connect with M8 hexagon nut with flange, or 40 series T-nut can be used to connect with hexagon bolt, or 40 series slider nut can be used to connect with hexagon bolt, which is firm, reliable and durable.