How to choose and buy a ductile pipe
s, is' touch 'quality.
In general, particle rough, probably with the impurities.
Second, is the 'look' color.
Green with white are the main types of pp-r pipe, consumers tend to think that white is the best, but color is not the judgment standard of quality.
Three, is' smell smell.
Main material is polypropylene pp-r pipe, good pipe has no smell, bad has taste, is likely to be laced with polyethylene, rather than polypropylene.
Fourth, is' knead 'hardness.
Pp-r pipe is hardness, casually can knead deformation of the tube, is certainly not pp-r pipe.
Five, is a 'hit' flexibility.
Good pp-r pipe, 'resilience' good, easy to smash the natural not good pp-r pipe.
But strong hardness is not equal to good elasticity, some impurities such as manufacturer by adding too much calcium carbonate to increase the hardness, how couldn't hit ground, use for a long time easy to brittle.
Sixth, is' burn 'smoke smell.
A mixture of recycled plastics and other impurities in raw material of PP - R tube will emit black smoke, a pungent smell.
And good material not only after burning smoke, no smell, burning, melt out of the liquid is still very clean (
The original from: http://www.
Guangzhou Xinerxun Metal Trading Co., Ltd. has an array of branches in domestic for servicing customers with high-quality products.
Xin Wilson Foundry has a whole range of different items to help you make an informed choice every time you make a purchase. Check it!
There are ample scientific evidence of reducing the risk of cast iron company
Individuals with varied technical skills use cast iron suppliers
in a wide range of applications.
Guangzhou Xinerxun Metal Trading Co., Ltd. integrates research streams on team diversity and knowledge boundaries, and present a framework that considers the kinds of specific knowledge boundaries that must be spanned to achieve high-level, cross-boundary teaming.