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FittingType-B HDPE Twining Structual Wall Pipe also named Krah pipe
is a kind of special-shaped structural wall pipe made by spiral
winding process with smooth inner wall and spiral shaped
reinforcing rib outer wall, which belongs to flexible pipe. Krah
pipes are made of high-density polyethylene by winding forming
process in the hot melt state, and are cooled by rolling air
cooling before demoulding in the hot state. The pipes
gradually dissipate heat and have uniform wall thickness.
Krah pipe adopts socket electric fusion connection.
Both ends of the pipe are processed into socket and spigot
during production, and electric fuse wire is embedded at the socket
end. When the pipe is socket connected, only the power supply
is connected to complete the welding, which can make the pipeline
system achieve zero leakage. This kind of pipe is widely used
in urban drainage, municipal drainage, electric power,
petrochemical and other fields, and is an ideal replacement for
reinforced concrete and cast iron pipes.Excellent physical
properties.High density polyethylene has good rigidity, strength,
flexibility and creep resistance. Compared with high density
polyethylene, high density polyethylene has better performance of
hot melt connection, which is conducive to the installation of
plastic pipe.Corrosion resistance and long service life.PE tube can
withstand the erosion of a variety of chemical media, without
anticorrosive treatment. It also doesn't promote algae, bacteria or
fungi and lasts longer. Hot wound forming weld is of high
qualityThe flat material belt and coating material belt in the
molten state extruded from the extrusion machine mouth die are
evenly wound on the heated roller mold according to the
predetermined position, so that the weld joint quality of the
structural wall pipe is more stable. The pipe is cooled by wind and
the material is cooled evenly.High Ring flexibilityPlastic pipe
belongs to flexible pipe, in the external pressure load, flexible
pipe and rigid pipe to bear the load mechanism is completely
different. The flexible pipe can have a large deformation before
being destroyed by compression. Large circulation capacity,
economical, excellent installation performance.Good tightnessThe
use of welding connection (hot melting or electric melting), the
structure and the tube body itself identity, to achieve the
integration of joint and pipe.Good stress cracking resistance, low
temperature impact resistance. 1. Nontoxic:
Carat Tube material is nontoxic and tasteless.
It belongs to green building materials, never scalling, which
can effectively improve the water quality.2. Corrosion
resistance: High resistance to attack from
various types of chemicals. No electrochemical corrosion.3.
No Leakage: Carat Tube is connected in the
ways of butt fusion, socket fusion and electrofusion and the
strength of joint point is higher than tube itself.4. Higher
flow capacity: The smooth inner wall is easy for
pipeline transportation. Under the same condition, delivery
capacity can be increased by at least 30%.5. Convenient for
construction and installation: Carat Tube could
be installed in a variety of trenchless ways, so it is very
convenient for Construction and installation.6. Lower system
and maintenance costs: Carat Tube is not only
convenient to transport and install, but also reduce the worker's
Labor intensity and improve work efficiency.7. Longevity of
working life: More than 50 years under pressure
use. Type-B HDPE Twining Structural Wall Pipe's Parameter
DatasNorminal Inner Diameter (DN/IN)Average Mean Inner
DiameterMin. Wall ThicknessMinium Melting Lenght for Electic Fusion
ConnectionMinium Melting Lenght for Rubber Ring Connection DN/IN
dim.minMin.Wall Thickness of inside Layer (B type)
e4,Min.L1.minLZ.min1501451.359432001951.559542502451.859593002942.059644003922.559744504412.859805004903.059856005883.559967006784.0591088007854.5591189008855.05912510009855.059140110010855.059152120011855.059162130012855.059 140013855.059 150014855.059 160015855.559 170016855.559 180017856.059 190018856.059 200019856.059 210020856.059 220021857.059 Note:1:
The pipe wall thickness is base on the GB/T19472.2-2017 or
specified EN/ISO standards2: Nominal pressure based on water medium
temperature ≤20ºC. It should be adjust when the temperature of the
medium change.3: Colour of the pipe is BLUE ,others should be
negotiate.4: Application:water,Corrosive liquid,pulp.LANGBOONE HDPE
double wall
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