Steel prop is a support system widely used in construction. We can use the tripod as a underprop. There are many kinds of specifications for choosing:

1, Outer tube Ф60 with inner tubeФ48;

Adjustable range: 1400~2500, 1650~3000, 1900~3500.

2, Outer tube Ф75 with inner tubeФ60;

Adjustable range: : 1400~2500, 1650~3000, 1900~3500, 2150~4000.

3, Outer tube Ф88. 5 with inner tubeФ75. 5.

Adjustable range: 2900~5500.