Type IV rigid waterproofing casing is suitable for potable water pools in the installation of the casing waterproof, asbestos and cement fill when the play, fill in the embedded seal cream, should guarantee seam no rust within the contact surfaces, coat of paint, dirt, and clean, dry. Flexible waterproofing casing generally applied in pipeline through the wall in a vibration or have close by waterproof demand structures; Wear the wall place, such as the case of the concrete wall should be to switch to concrete walls, and must be a solidified in the casing wall inside; Waterproof casing in construction, application of steel, chemical industry, water, sewage treatment, and other units.

Pipeline crossing basis, interior wall, floor, avoid the place such as pipeline use, building cause disturbance, facilitate at the same time piping installation and maintenance, installation, set more than the outer diameter of pipe, material and length are to meet the requirements of, installation in the foundation, the interior wall, floor slabs, etc pipeline crossing place short tube.

Ordinary casing, multi-purpose welding tube, on both ends of the casing shall be cutting machine mouth, of wall thickness lax requirements.

Pipeline crossing basement, etc have waterproof demand buildings, structures, set for special casing. Commonly used rigid waterproofing casing. Rigid waterproofing casing, need to be in the water stop welding casing ring wing, the casing of thick wall and wall thickness of the ring wing has strict requirements, and should guarantee welding quality.

Pipe wear of the structure of concrete shear wall basis, wear beam, wear different column, should be installed with civil together. The reason is, reserved after casing pipe and concrete hole, between second casting bad treatment; Unable to deal with some, such as the basement foundation concrete shear wall installation rigid waterproofing casing. Refers to the pipe concrete floor, common in brick wall, be in commonly on the concrete floor, the common reserve hole brick wall after wall can be hewn eye. Floor place, in Ann pipeline, the line before fall, installation casing. The brick wall, drawing a line, and plant, and find a stent slope, installation casing.