1. The anticorrosion steel tube applied in kitchen should be laid at the back of the cupboard. It is unnecessary to use the way of embedment into the wall. When laying the steel pipe vertically, the fixed support should be made at the place of the standpipe crossing the floor slab to avoid the cumulative expansion and contraction of the standpipe generates displacement stress at the part of connecting the branch pipe on top.
As to the standpipe with the external diameter no greater than 40mm, apart from the fixed support at the place of crossing floor slab, two other supporting points should be set in the middle of each floor space. When the standpipe external diameter is no less than 50mm, there just needs one supporting point in each floor space. There is no need to set the supporting point with equidistance. It is preferable to set a supporting point at the tee place in which the branch tube is connected to the standpipe.
If the standpipe is laid in the pipe shaft, then it is appropriate to set the fixed supporting point at the tee fitting place in which the standpipe is connected with the branch pipe. The intermediate support is set still according to the above principles. The pipeline applied in abovementioned fields must be checked through the pressure test and can be put into the civil construction only after the confirmation of no leakage.
2. With regard to laying branch pipe in the brick wall, we recommend to open a pipe chase in the wall to embed the pipeline directly and use the pipe clamp to fix the pipeline in the pipe chase. The height of the pipe chase should be larger than the external diameter of the steel tube by 20mm and the depth of the pipe chase is equal to the external diameter, as long as the steel pipe is not exposed out of the surface of the brick wall. Do not use the pipe fittings for the pipeline embedded into the pipe chase as much as possible. The bending radius of the pipe chase should meet the minimum bending radius of the steel pipe.
3. The standpipe should be laid in the pipe shaft.
4. When laying in the ceiling, the operator should bend the running direction of the steel tube purposely and make the bearing frame.
5. If the construction object is reinforced concrete shear wall, then the branch pipe should be laid by clinging to the wall surface and using pipe clamp for fixation. When doing the wall construction, the operator can cover the branch pipe by using high-grade cement mortar directly or employing the steel screen for wrapping the outside of the branch pipe first (partial or all pipe laying wall) and then the cement mortar. After finishing that, the decorative material such as ceramic tile can be pasted outside of the wall surface.
6. In the case of two washrooms or three washrooms as well as the steel tube crossing the living room, the steel pipe can be buried into the screed coat directly. That way is only fit for the steel pipe with the external diameter of 20mm. The steel pipe buried into the screed coat can not have any connecting piece. The other way is that the steel pipe can be buried into the reinforced concrete floor slab by matching with the steel sleeve as well as the measures for avoiding the concrete entering into the steel sleeve during the pouring process.