Joint Types

Standard joints (type M)

Used in case when turning of the connected bar and moving it along its axis is possible

Making the joint: To the base bar, affix standard sleeve (sleeve is screwed on halfway through its length onto the base bar until one feels pronounced resistance), next screw in the connected bar into the sleeve until resistance.


Positional joint (type MB)
Used when turning the connected bar is not possible, but moving it along its axis is.
Making the joint: Onto the connected bar install a standard sleeve, until the end face of the bar and the sleeve (sleeve is screwed onto the connected bar completely) are flush with respect to each other. Next, move the connected bar to the base bar and screw the sleeve onto the base bar until pronounced resistance.


Positional stabilised joint (type MC)
Used, then turning the connected bar is not possible, but moving it along its axis is, and after execution of the joint, the connected bar must be placed with respect to the base bar very precisely.
Mode of execution: install on the connected bar, in the following order, as follows:
  • locknut
  • standard sleeve, until the ends of the standard sleeve and the bar are flush with respect to each other.
Next, move the connected bar to the base bar and screw the standard sleeve onto the base bar until pronounced resistance. The connected bar is stabilised by tightening the locknut to the standard sleeve until pronounced resistance.


Spaced joint (type MD)
Used when there may be a space between the face sides of the connected bars not exceeding the diameter of the joined bars.
Mode of execution: install on the connected bar, in the following order, as follows:
  • locknut
  • spacer sleeve, until the ends of the bar and the spacer sleeve are flush with respect to each other
Next, move the connected bar to the base bar, with a distance not exceeding the diameter of the joined bars, and screw the spacer sleeve onto the base bar. The connected bar is to be stabilised through tightening the locknut to the spacer sleeve until pronounced resistance.


Reduction joint (type MR)
Utilised, when turning the connected bar and moving it along its axis is possible, but when the connected bar and the base bar have different diameters.
Mode of execution: On the base bar install a reduction sleeve, and then screw the connected bar into the other end of the reduction sleeve until pronounced resistance.


Welded joint (type W)
Used in case of necessity of connection of the reinforcement bar with a welded structure, if the bar may be turned and moved along its axis.
Mode of execution: welded sleeve should be welded on to the steel structure. The size of the weld is equal to the depth of the weld slit, and then screw the connected bar into the welded sleeve until pronounced resistance.