热门关键词：防水套管 柔性防水套管 刚性防水套管 密闭套管 钢制伸缩器 穿墙套管 止水套管 波纹伸缩器
The processing of the closed casing is as follows:
When the wind casing is out of the wall 100MM, the casing should be derusting, the crack is checked well in advance, the seamless steel pipe is better (except for the ventilation short pipe), the closed wing ring around the wall casing should be full welding, after the wall casing (also short pipe) is finished, the cold bottom oil is used to brush the outer wall of the casing, and the wall sleeve is measured. After the axis position and elevation of the short tube, the casing and the surrounding reinforcement are firmly welded. The center of the pipe is perpendicular to the wall; when the concrete is poured, there must be a special person to take care to prevent the displacement. The concrete around the casing should be compacted and dense. At the same time, remove the bubbles around, so as not to cause seepage.