1.light weight:weight in unit length is only 1/6 of the cast-iron pipes
2.high strength:tesile stength comes to above 45Mpa
3.less resistance:wall of the inter is smooth,prevents scum buildup.the water pressure and discharge of pvc-u pipe is 30%lower than cast pipes in the same diameter,and it can save the cost of discharge power
4.corrosion resistance:it has the excellent resistance to the corrosion caused by acid alkaline,chemical and electricity.stains will not occur.
5.simple installation:connect easily with rubber rings.it is easy to carry our and seals well.
6.long lifespan:under the normal working pressure,the lifespan reaches to 50 years
7.sanitary and non-toxic:it accords with the drinking water standard;the water is conveyed without secondary pollution.
8.low cost:with lower cost of installation,transportation and raw material,the total cost of the whole engineering makes the cost 30%lower than cast pipes
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