Abstract:
The invention relates to a plug (11) to be fixed to a tube (10) by means of a glue joint, which, when the plug is glued, the glue is fed when the plug (11) is in position in the tube (10). The surface of the plug (11) to be glued or the inner surface of the tube is provided with a compensation groove (14) located essentially in the middle range of the joint, into which the glue is injected by means of at least one injection hole (12), preferably centrally and symmetrically. The glue is fitted to advance from said compensation groove (14) as two uniform fronts preferably symmetrically towards ends (11a, 11b) of the plug (11).
Abstract:
The invention relates to a plastic composite beam or pillar (20) comprising a reinforced-plastic body (31) and steel reinforcements (30). The invention also relates to a method for manufacturing a steel-reinforced plastic composite beam or pillar, in which method the steel reinforcements (30) are placed in the beam or pillar (20) in connection with the manufacturing of the beam or pillar (20) by utilizing the pultrusion technique.