OVM
can supply either steel pipe(galvanized
or zinc-plated) or PE sheathing.
PE sheathing
is used for OVM Vacuum Grouting System.
Have the following merits:
frictional
forces is small: PE sheathing is made
of HDPE, its friction factor is smaller
than corrugated metal pipe.
seal performance
is good: PE sheathing does not leak, this
is extremely favorable in protecting the
strands.
Anti-corrosion
property: PE sheathing can protect prestressing
bars from electricity-ization corrosion
and oxidizing corrosion in the course of
application, and also can avoid getting
rusty while leaving for a long time in the
course of constructing.
the intensity
is high, rigidity is large: not afraid of
being stepped on and pressed at the construction
site, not easy to be digged and broken while
grouting.
fatigue
property of the prestressing bars are high.
Address(
headquarter): No.3, Longquan Road, Liuzhou, Guangxi, P.R. China,
545005