Student non-adjustable chair "Extra P plastic STAND-UP" gr. 2,4,3,5, article number ST-06

Student non-adjustable chair "Extra R plastic STAND-UP" gr. 2,4,3,5, article number ST-06. The seat height is adjustable and corresponds to the height group: 2-4 (300-340-380 mm), 3-5 (340-380-420 mm).
The lower part of the frame is made of thin-walled cold-rolled, electrically welded pipe with a diameter of 32 mm and a wall thickness of 1.5 mm. The upper part of the adjusting mechanism is made of thin-walled cold-rolled, electrically welded pipe with a diameter of 28 mm and wall thickness of 1.5 mm. The upper part of the chair frame is made of cold-rolled, electrically welded flat-oval pipe 30 x 15 mm with a thickness of 1.5 mm, the pipe is equipped with internal plastic plugs of the appropriate size. The rigidity of the frame is provided by a crosspiece made of thin-walled electric-welded pipe 18 mm in diameter, wall thickness 1.5 mm, the crosspiece is fixed by welding between the support legs. The support part of the leg is arc-shaped with an inner bending radius of 350 mm. The seat base is made of two thrust metal strips of width...