Inferior wear resisting composite pipe not only has unsatisfactory service effect, but also has very short service life.
How to identify wear resisting composite pipe is inferior, the engineer teach us some methods:
1）Longitudinal crack
Longitudinal crack refers to the appearance of longitudinal cracks on the surface，It usually appears
in the top and corners, the crack will be deeper in the top.
2） Shrinkage cavity
It shrinks inside the mold when liquid steel is in a liquid state,Sometimes, it will be affected by the
environment,such as air,temperature and other characters to form some chambers. Technically, it's
called shrinkage.
3) Surface blowhole
Many small holes can be seen on the surface of wear resisting composite pipe,Most of these holes are
very shallow, like transverse cracks.
4) Rolling skin
Longitudinal cracks may occur at the top or corner above mentioned,Metal splash stick occurs in the
lower regions sometimes. Actually, this problem is seldom appear.
5) Serobilization
Transverse cracks occurred on the surface of the composite pipe, Generally, transverse cracks occur
during the ingot period, most of them are shallow.