|
|
| Plastic pipes is one application for PVC |
|
Release time:2013-11-27 15:38/Source:admin/Reads:/Enquiry
|
|
Due to PVC's relatively low cost, biological and chemical resistance and workability have resulted in it being used for a wide variety of applications, it is used for plastic seals, sewerage pipes, and other pipe applications where cost or vulnerability to corrosion limit the use of metal. With the addition of impact modifiers and stabilizers, it has become a popular material for window and door frames. By adding plasticizers, it can become flexible enough to be used in cabling applications as a wire insulator. It has been used in many other applications. PVC demand is likely to increase at an average annual rate of 3.9% over the next years.
Roughly half of the world's polyvinyl chloride resin manufactured annually is used for producing pipes and plastic seals for municipal and industrial applications. In the water distribution market it accounts for 66% of the market in the US, and in sanitary sewer pipe applications, it accounts for 75%. Its light weight, low cost, and low maintenance make it attractive. However, it must be carefully installed and bedded to ensure longitudinal cracking and overbelling does not occur. Additionally, PVC pipes can be fused together using various solvent cements, or heat-fused (butt-fusion process, similar to joining HDPE pipe), creating permanent joints that are virtually impervious to leakage.
For the plastic pipes not plastic seals, in February, 2007 the California Building Standards Code was updated to approve the use of chlorinated polyvinyl chloride (CPVC) pipe for use in residential water supply piping systems. CPVC has been a nationally accepted material in the US since 1982; California, however, has permitted only limited use since 2001. The Department of Housing and Community Development prepared and certified an environmental impact statement resulting in a recommendation that the Commission adopt and approve the use of CPVC. The Commission's vote was unanimous and CPVC has been placed in the 2007 California Plumbing Code.
|
|
|
|
|
|
|
 |
|
|
| |
 |
|
-
TEL:
Sinicline Wuhan
86-27-83372627
86-27-83372628
86-27-83372629
-
FAX:
86-27-83372625
-
E-MAIL:
mk@sinicline.net
|
|
| |
 |
|
|
