Ergonomic Student Chair with S-Shaped Frame for Comfortable Learning

Framework supports are made of flat-oval tube with 40x20x1.5 mm cross-section of C-shape.From below the supports are connected with each other by welded connection by a crosspiece made of flat-oval tube with 30x15x1 mm cross-section.On the outer side of the chair leg bend a support corner made of a metal plate 107x13x1.5 mm is welded.Two curved blanks made of flat-oval tube with a cross-section of 30x15x1.5 mm are welded on top of the supports for subsequent fastening of the backrest and seat to them.All visible holes in the pipe are closed with plastic plugs.To the metal corner, on the outside of the bend of the chair leg, a plastic corner support 110x95x25mm is fixed.On the front edge of the metal supports plastic lugs 65x45x25mm are put on.The corner support and the lug are fastened with self-tapping screws 3,9x19mm.The frame is painted with powder paint.The seat and backrest of the chair are made of bentotoklevennoy plywood, coated with varnish, attached to the frame with the help of rivets.The size of the seat and backrest according to GOST.