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Metal reinforced polyethylene（PE）spirally corrugated pipe is a new kind of double-wall spirally corrugated pipe. The HDPE is used as basic material, and the steel strap spiraled as the supporting part which is spiraled to corrugated wall structure.
The stuffing material of steel reinforced HDPE pipe and fitting is PE 80 （piping class）, and we use high quality low-carbon steel wire as the reinforcing part of the pipe and Q235 steel sheet for fittings.
Characteristics of PE 80(piping class) material
Melt Flow Index(5Kg,190℃)
ASTM D 1238
ASTM D 792
Tensile Yield Strength
ASTM D 638
Tensile Fracture Strength
ASTM D 638
ASTM D 638
ASTM D 746
Linear Expansion Coefficient
ASTM D 1689
ASTM D 4131(B)
Long-term Hydro Static Strength
Short-term Hydro Static Strength
ASTM D 4131
The characteristic of steel wire and sheet
Because of the reasonable design and the advanced production technology, the Metal reinforced polyethylene（PE）spirally corrugated pipe possesses many advantages, such as high ring stiffness, resistance to corrosion and abrasion, light weight, convenient construction and installation etc..
It is a new kind of pollution-free plastic pipe which recommended by the Ministry of Construction. The features follows:
1 For the high elastic modulus of corrugated steel strip, the pipe possesses high ring stiffness.
Metal reinforced polyethylene（PE）spirally corrugated pipe makes use of the special corrugated steel as supporting structure. Because of steel’s high elastic modulus and pipe cross-section’s high moment of inertia, there are 4 ring stiffness classes for the pipe: SN8, SN10, SN12.5, and SN16. Its high ring stiffness breaks the limit that the highest ring stiffness of plastic pipe can only reach the SN8. It makes plastic pipe can satisfy various engineering requirements.
2 The HDPE materials is very stable is chemical reaction, the pipe can resist corrosion and abrasion, and has a long service life.
The steel is completely covered by HDPE, so only the HDPE is exposed to the liquid and the soil. HDPE is a kind of crystal Non-polar material, it is very stable and has no electric-corrosion. Pipe resists corrosion and abrasion, has a long service life.
3 Smooth inter wall, the transportation capability of the pipe is high
The inner wall surface of Metal reinforced polyethylene（PE）spirally corrugated pipe is smoother than concrete pipe. So the transportation capability of the pipe is obviously higher than that of concrete pipe under the same condition.
4 Hollow structure, light weight, convenient construction and installation
With the corrugated steel strip as supporting structure, it needs fewer raw materials than other plastic pipes. Metal reinforced polyethylene（PE）spirally corrugated pipe is light. It can be connected by many kinds of method, for example, electric melting belt; the transport and installation are convenient and simple.
5 HDPE and adhesive resin are combined with the steel strip closely in molten state.
As bond between HDPE and steel, there is a layer of adhesive resin which the steel strip’s surface coats with. To control the optimum temperature, pressure and time can ensure that HDPE and steel compound closely. It prevents the steel strip being rusty.
6 Flexible pipe, joint steady, resist to unequal settlement
Metal reinforced polyethylene（PE）spirally corrugated pipe possesses the characteristic of both rigidity and flexibility, when under pressure, the pipe and backfill soil can resist to external load and reasonable uneven settlements of soil.
Combined with the advantages of the electric-melting belt welding method and the patented technology of welding, it can ensure the welding quality be safety.
minimum mean inside diameter
minimum inner wall thickness（mm）
minimum multilayer wall thickness
Maximum thread pitch（mm）
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HTIDC won the bidding of drainage pipline projects of the 12th National Games in Shenyang in 2012.
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