What is the structural difference between the three-stage water stop screw and the threaded water stop screw?

Water stop screws are usually used in the construction of water treatment building structures. The biggest difference between the screw and the water stop screw is that a small iron piece is welded in the middle. Usually called water stop iron, there is a gap when the screw engages with the concrete slab wall, and water will seep from the gap between the steel bar and the concrete; For example, a piece of iron is welded in the middle of the screw, and when the screw penetrates into the iron, the water will be blocked to stop the water.

Constant shuttering water stop screw length, plate wall thickness plus 40CM, because after shuttering is completed, both ends of water stop screw are exposed, the wholesale price of water stop screw should not be too long or too short, and the price list of water stop screw should not be too long, which will waste and occupy space, and too short is not conducive to cutting. Therefore, this is a general length, which is suitable for all water stop screws.

Water stop screws can be divided into old water stop screws and three-stage new water stop screws according to their shapes. The traditional simple three paragraphs, as the name implies, are three paragraphs. In order to complete its task, there is also a connecting nut between the three sections. Secondly, the production is difficult, and the production of simple products is relatively easy and understandable, so the production requirements for new water stop screws are relatively improved.