Basic elements of the SLV – 73 system
The basic elements of the system are the frame and the platform which serve as the basis of the structure. The steel frames are made of 48.3 pipe with a 2.7 mm wall . The steel grade is S235 JRH with a yield point Re min greater than 280 MPa, most often Re is within the range of approx. 280-285 MPa . Before the production process, each pipe section is sent to Bydgoszcz Institute, which checks whether the certificate is compatible with the delivered batch of pipes, in order to avoid documents. The pipe is bottled on a machine designed specifically for JRH material, which shapes the pipe.
The machine has three stages of production in order to avoid stress that could cause microcracks and pipe disqualification. The frames are manufactured on a two-station welding robot. They have snap-on handles for fastening the handrails, thanks to which the installation of internal handrails on the vertical frame is quick, wedging with one hammer blow ensures a force-locked, stable and sturdy connection.