Low Specific Resistance PU Ductile Iron Pipe C Or K9 Unit Length
5.7M
PU Ductile Iron Pipe
PU Ductile Iron Pipe is ductile iron pipe with a polyurethane
coating, polyurethane coating is made of bi-component polyurethane
materials to a scale, and not only does it serve as the
inner-lining material of nodular castiron pipe, but as related
outer errosion resistant coating. Polyurethane coating has many
advantages such as wonderful abrasive resistance, excellent
corrosion resistance, non-permeation, smmoth surface, small
resistance coeffecient, few volatile organic compound,remarkable
environmental protection property, ect. Some polyurethane coatings
with a thickness of 900μm,are mainly applied to
transportingcorrosive mediums or the mediums with high sanitary
condition, including soft water, desalination seawater, municipal
wastewater, industrial wastewater, and others; and some with
thickness above 700μm are mainly applied to the soil environment
with strong corrosivity such as the soil polluted by industrial
wastewater or with low specific resistance.
Internal and external Classification:
1. Common coating
Ordinary portland cement mortar is coated internally while zinc and
bituminous paint is painted externally.
2. The internal coating of sulfate cement mortar
Sulfate cement, also known as high sulfate-resistant cement, has a
good sulfate corrosion resistance and a wide application in
transporting some highly corrosive mediums such as seawater.
3. The internal coating of aluminate cement mortar
The ductile iron pipe for sewer line complying with ISO7186, EN598
and GB/T26081 is coated with aluminate cement (also known as
high-alumina cement) internally, with a result of excellent
resistance to chemical corrosion and abrasive resistance which is
much more suitable for transporting rainwater, sanitary sewage and
some kinds of industrial sewerage water.
4. Zinc-Aluminum coating
The outside surface of cast iron pipe is coated with Zinc-Aluminum
coating (85%Zn+15%Al) weighed 400g/m2, which is suitable for soil
with higher corrosivity.
5. The internal coating of epoxy ceramic
The interior of epoxy ceramic is made of epoxy resin, quartz powder
and others with a dry film thickness of more than 1,000μm, and the excellent corrosion resistance electrical insulating
property makes it be a preferential position in transporting
municipal sewage, reclaimed water, etc.
6. Epoxy resin seal coating
The cast pipe with epoxy resin sealing coating is equal to a cement
inner-lining coated by a layer of epoxy resin sealing, whose
thickness is determined in accordance with the characteristics of
transmission medium, and has wonderful abrasive resistance and
corrosion resistance. Thanks to the seal coating, the precipitation
of hazardous substance is effectively resisted, commendably
avoiding the pollution to transmission medium and more suitable for
the direct delivery of drinking water.
7. Polyurethane coating
Polyurethane coating is made of bi-component polyurethane materials
to a scale, and not noly does it serve as the inner-lining material
of nodular cast iron pipe, but as related outer erosion resistant
coating. Polyurethane coating has many advantages such as wonderful
avrasive resistance, excellent corrosion resistance,
non-permeation, smooth surface, small resistance coefficient, few
volatile organic compound, remarkable environmental protection
property, etc. Some polyurethane coatings with a thickness above
900μm are mainly applied to transporting corrosive mediums or the
mediums with high sanitary condition, including soft water,
desalination seawater, municipal wastewater, industrial wastewater,
and others; and some with thickness above 700μm are mainly applied to the soil environment with strong corrosivity
such as the soil polluted by industrial wastewater or with low
specific resistance.
Packing: bundled with steel belts or in bulk
Shipment: in bulk or container
Usage:
Much of the production of ductile iron is in the form of ductile
cast iron pipe, used for water and sewer lines. Ductile cast iron pipe is stronger and easier to tap, requires less support and provides
greater flow area compared with pipes made from other materials
like PVC, concrete, polyethylene or steel. Ductile Iron Pipe is the
most widely-used pipeline product in water supply and water
drain/sewage projects.
Our advantages:
There are lots of qualified managers and technicians, and a
well-trained team of after-sales service, which provides all
services of manufacture, package, transportation and installation.
We are looking forward to cooperating with friends from abroad and
home creating a brighter future.
