The selection of indoor drainage pipes should take into account the properties of buildings, the height of buildings, the requirements for seismic resistance, the requirements for fire prevention and the local supply conditions of pipes, and choose them according to local conditions. The performance and service life of building indoor drainage system depend largely on the advantages and disadvantages of its own drainage pipes.
The optimal choice of pipe materials for indoor drainage system of flexible cast iron pipe building -- the classification and characteristics of drainage pipe materials
There are mainly three kinds of materials used for building indoor drainage pipes, namely ceramic pipe, cast iron pipe and plastic pipe. Among them, the ceramic pipe has been gradually eliminated due to its heavy weight, easy to damage and large installation workload. Besides special needs, it is no longer allowed to be used in the specification.
Mechanism flexible cast iron pipe building indoor drainage system of the best choice of pipe materials - drainage cast iron pipe.
Grey cast iron pipe: this pipe is produced by continuous casting, centrifugal casting and sand casting, among which the sand casting method has been eliminated due to poor performance and has been restricted in the specification. The joint form of grey cast iron pipe is socket joint, and the shape of the socket part can be divided into type A and type B. Grey cast iron pipe has 6 specifications according to nominal diameter, including DN50, 75, 100, 125, 150 and 200.
Grey cast iron pipe fittings can be divided into two types: flexible joint and non-flexible joint, both of which are socket joint. Flexible joint cast iron pipe is mainly used in building drainage. According to the shape of pipe socket, the flexible interface is divided into A type and RK type. According to wall thickness, flexible interface can be divided into TA type and TB type.
As a kind of traditional drainage pipe material, the flexible iron drain pipe with flexible interface has been greatly improved and its comprehensive advantages are becoming more and more obvious after the process renewal. In addition, the flexible interface specified by GB/T12772-1999. The cast iron pipe is compatible with the international standard IS06594, and the application of cast iron pipe is more and more extensive. Flexible cast iron drain pipe and pipe fittings have complete specifications, easy installation and maintenance in construction, not easy to damage, but also has the advantages of anti-seismic, anti-settlement, low noise and so on. Due to the noise, fire prevention, excellent properties of technical economy, flexible interface cast iron drainage pipe are applied in high-rise buildings have better prospects, mechanism of flexible cast iron pipe is the optimal choice of building indoor drainage pipes.
Flexible interface cast iron drainage pipe are popular and practical international drainage pipes, also with international level of drainage pipe in our country, especially suitable for high-rise buildings, the mechanism of flexible cast iron pipe is the optimal choice of building indoor drainage pipes.