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The traditional water stop screw is composed of three parts: the screw, the positioning plate that controls the wall thickness and the water stop plate. Two, three stage type water stop screw composition: 1, the middle is waterproof to pull the inner support, to control the wall thickness, the wall thickness by the inner support size is the same. 2. The plastic plugs at both ends are positioning tendons for locating the template. 3. The screw connected to both ends of the pull inner brace is the turnover screw, which can be easily loaded and unloaded. When used again, no matter how much the size of the middle pull tube is, the turnover screw can be matched with it.
As a widely used building material, there are many styles of water stop screw, such as one-section water stop screw and three-section water stop screw. At the same time, in the case of removing the middle water stop sheet, it can also be called the pull screw. Compared with a one-section water stop screw, the three-section water stop screw is more convenient and labor-saving.
In the common materials of water stop screw, there are two kinds of round steel and screw steel.
The material of these two steels is often q235b and q345b And 45 steel, etc.
The commonly used material of the three-stage water stop screw is q235b, which has strong pressure resistance.
The middle position of the ordinary threaded screw welding water stop sheet, fixed template pouring, remove the mold cut off the water stop screw exposed at both ends of the wall, the middle section of the screw left in the wall, play the role of water stop, but can not be reused, the loss is larger.
The three-stage water stop screw is composed of the middle section of the welded water stop screw, the outer rod at both ends connected by the vertebral nut, the mountain card and the nut. The advantage of the three-stage water stop screw is that the screw at both ends of the screw, the mountain card and the nut can be removed and reused, which greatly reduces the construction cost and improves the utilization rate of materials.
So we use two protection welding machine for sealing plate welding, welding effect is very good, and is double-sided full welding, no loopholes, tin slag, uneven phenomenon, but also greatly improve the artificial efficiency, more favorable is to improve the welding process of the sealing plate, the sealing effect has been a qualitative improvement.
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