Shaft for pull-ups, three heights
The design of the three height shaft must be made of aluminum oval profile in section 72x105mm.
Aluminum profiles have flat sides, with corners rounded in radius around 20mm aluminum profiles are intrinsically reinforced with partitions made of 4 separate chambers. The first two aluminum pillars are 240cm high, the second is 220cm high and the third is 200cm high. The highest pillar on the shaft is 230cm high, made of Ø42mm steel profile. Medium pillar of the shaft is on a height of 210cm and the last crossbar is 200cm high, and both of the steel profile Ø42mm.