Polywrap
In
over 35 years of service in thousands of utilities in the USA and
throughout the world, polyethylene encasement has proved an effective
corrosion protection system for miles of ductile iron pipe. Today,
it is the most widely used method of protecting ductile iron pipe
installed in corrosive environments.
Polyethylene encasement involves simply wrapping the pipe with a tube of
polyethylene immediately before installation of the pipe. It is
easy for construction crews to install on-site and is by far the most
economical way to protect ductile iron pipe. Also, unlike cathodic
protection systems and bonded coatings, polyethylene encasement is a
passive protection system, so it requires no monitoring, maintenance or
supervision once installed.
POLYETHYLENE ENCASEMENT TUBING
- Is inexpensive
- Is easy to install
- Requires no additional manpower
- Costs nothing to operate
- Does not deteriorate underground
- Is easily repaired with polyethylene tape
- Does not require special handling or packaging during shipment
- Provides a uniform environment for pipe, virtually eliminating corrosion
- Protects the pipe without the formation of concentration cells at coating holidays
