... instruments (fencing, railing,safe doors / windows, gate fittings, inside staircases, balcony balustrades,furniture, sanitary wares, kitchen wares)Specifications: ... (or according to customers' requests)1) Round pipes - Outside diameter(mm) :9.5,11,12, 12. ... 24x24,25x25,28x28,30x30,36x36,38x38,40x40,48x48,50x50,3)Rectangular pipes - Outside dimensions(mm) : 20x10,23x11,24x12,25x13 ...