The reducing steel bar connecting sleeve is mainly used for the mutual connection of different diameter steel bars. Although the amount is small, it is indispensable.
The reducing diameter of the connecting sleeve of the steel bar is generally required to be within 3 numbers. For example, the 25# steel bar can be connected to the 32# steel bar by reducing the diameter, and it can also be connected to the 28# steel bar, but it cannot be reduced to connect the 36# steel bar.
There is no national standard for the connection of steel bars with variable diameters. The above is the practice.
Sleeves are packaged in bags as shown below:
The outer diameter, length and material of the reduced-diameter steel connecting sleeve are calculated according to the large end.
Construction is to pay attention to, when the steel bars of different diameters are connected, the tightening torque value is taken according to the corresponding value of the smaller diameter steel bar.
Straight thread reducer connections are generally used on beams and columns, and the yield strength test should be performed with a small diameter.
Reducing sleeve connection method and steps:
(1) First, screw the connecting sleeve into one end of the large-sized steel wire head and tighten it.
(2) Screw the steel wire head of the small-sized steel bar into the connecting sleeve. After confirming that the two steel bars are aligned in the connecting sleeve, use a special working wrench or pipe wrench to rotate the steel bar.
Connection quality control points:
(1) First screw the connecting sleeve into one end of the large-sized steel wire head, and then screw the steel wire head of the small-sized steel wire into the connecting sleeve. (2) After the steel bars are connected, there are exposed threads on both ends of the connecting sleeve, and the number is equal, which is a prerequisite for determining which pair of steel bars to find in the connecting sleeve.
Construction is to pay attention to, when the steel bars of different diameters are connected, the tightening torque value is taken according to the corresponding value of the smaller diameter steel bar.
Straight thread reducer connections are generally used on beams and columns, and the yield strength test should be performed with a small diameter.
