The flange extrusion for M341-80mm square extrusion, its overall dimension is 60.2mm x 16mm. The material of M342 is 6063 aluminum, the weight per meter is 0803kg and the maximum length that can be produced is 6 meters. Quality standard of product meet with Germany standard : DIN1725, DIN1748, DIN17615, quality control higher than China national standard. M342 has one system groove, the width of the groove is 4.3mm. It has a groove on both sides, which can be used for I-shaped aluminum. When used with M342, they can form a 100mm square column closed on four sides.