1. Briefly analyze the different materials of UPVC drain pipe and cast iron drain pipe. The density of UPVC drain pipe and cast iron drain pipe is 1.50g/cm3 and 7.2g/cm3 respectively, which is about 5 times of the former. Therefore, the UPVC drainpipe has a small transportation and operating intensity during construction.
2. Analyze the installation efficiency of the difference between UPVC drain pipe and cast iron drain pipe. UPVC drain pipe adopts adhesive interface, which is easy to be bonded, easy to cut and free to install up and down. The interface procedure of the cast iron drain pipe is complex, it needs to be hemp, adjust the interface material, punch and maintain. It can be seen that the installation efficiency of UPVC drain pipe is obviously higher than that of cast iron drain pipe.
3. Briefly analyze the appearance and corrosion resistance of the difference between UPVC drain pipe and cast iron drain pipe. The UPVC drain pipe is usually white, which can produce a variety of pipes of different colors according to different fillers. The color is bright, bright, smooth and corrosion resistant. Cast iron drain pipe material is coarse, easy to rust, the outer wall needs to be treated with corrosion, about every two years to brush.
UPVC drainage pipe with transport handling convenient, save a space, beautiful diversiform, drainage capability, low cost and installation efficiency higher advantages, but there is a poor sound insulation and shock effect, low fireproof performance, low tensile and bending strength of faults.
Flexible interface cast iron drainage pipe has high tensile and bending strength, low noise, long service life (generally in more than 50 years), but the cost is higher, relative UPVC drainage pipe installation work efficiency is low.
Proposal should consider to choose the right from the use function of the building drainage pipes: in a tall building, residential and hotel should first consider using the flexible interface cast iron drainage pipe, in the noise environment, fire prevention and shockproof requirements higher buildings should be forced to adopt flexible interface in the cast iron drainage pipe;