The water stop screw can be divided into a one-stage type water stop screw and a three-stage type water stop screw from the appearance. The function is the same, when the building wall is fixed, the template is fixed to prevent the concrete tempo and the storm mud, and the width of the template can be controlled; In the later period, it plays the role of sealing and waterproofing. This is the advantage of the sealing screw. Therefore, the construction materials cannot be separated from the sealing screw. It can be seen that the sealing screw has played an indelible role in the development of today's society. As long as it is related to the waterproof project will see the figure of the sealing screw material.
The one-stage sealing screw is a whole, so after the wall is formed, the outer rods at both ends are to be cut off, which is a waste of steel. If we see such a scene from the construction site, we will insist on using the three-stage water stop for customers. Screw; three-stage sealing screw is divided into three sections because of the advantages of its own shape, so when used, the joint nut connects the inner and outer bars to form a section. After the wall is formed, only the outer bar and the joint nut can be removed. The operation is very convenient, and the outer rod and joint nut can be reused. Unlike the one-stage sealing screw, the cut screw head becomes scrap. The advantage of the three-stage sealing screw is saving and environmental protection, which brings to the project. It's convenient.
So how do I choose the length of the sealing screw? For example, if the width of the wall is 30, we use a one-stage water-stopping screw of 65CM-70CM, because the exposed screw heads of the wall after molding are about 20CM each, which facilitates the follow-up cutting action; Stopping the screw will waste 40CM screw head, so a calculation of engineering costs is indeed more wasteful, but also spent a lot of manpower and material resources;
Or take a board wall with a width of 30cm as a category. We only need to report the wall width. The wall width is the length of the three-stage water-stop screw rod, and the three-piece waterstop screw has two fixed outer rod lengths. The length of the three-piece water shutoff screw rod of Nanjing Aojian is normally 22CM, because the outer rod can be used repeatedly, so this length is just right, which saves steel and shortens the construction period, so buy a waterstop screw and buy three Type water stop screw, save money, effort, and time.
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