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2013年2月18日星期一

To identify PVC pipe good or bad

(1)pvc pipe machine is the main raw material is made ​​of pipe PVC resin powder. Generally based on the type of PVC pipe
The pipe uses sub: drains, water pipes, electrical conduit, cable sheathing …
Various types of pipe resistance to stress and other indicators do raw recipe is different, is not the same.
PVC water supply pipe with the water supply fittings, water supply project for the building.
PVC drain pipe used for sewage …
Fourth, to identify the quality of PVC pipe
(1) look at the surface finish, and whiteness.
(2) take samples fell easily broke generally high calcium products, of course, to meet you the price is right.
(3) take the samples with the side of the foot pipe, see if you can crack or elongation at break after the split.
(4) weather very troublesome. The most direct way to get high Wen Gaoguang the place for a few days to see the surface of the rate of change, but a waste of time. Look at the top three just fine.

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