Ultra High Molecular Weight Polyethylene Wear Resistant Pipe
Ultra High Molecular Weight Polyethylene(UHMWPE for short)wear reisistant floating pipe was extruded out with 3.5~9.2 million viscosity-average molecular weight material by extruding machine in high temperature and pressure situation. The UHMWPE wear resistant floating pipeline is widely applied in the fields of hydraulic reclamation,dredging, mine tailing,ash transporting and so on.
UHMWPE wear resistant floating pipe Benefits:
1. High Wear Resistance
UHMW-PE has the best wear resistant ability among all the engineering plastics. The higher molecular weight of the material, the more wear resistant of the pipeline. The UHMWPE pipeline manufactured by Shandong Buoy&Pipe Industry Co.,Ltd is 4~6 times higher in wear resistance than that of Q235 carbon steel and 2.7 times wear resistance than that of silicon- manganese 13 wear resistant steel.The ultra high wear resistant ability of the material will prolong the UHMWPE pipeline using life effectively.
2， Low Coefficient of Flow Resistance, Low Friction Resistance, High Transmission Efficiency
The internal wall of UHMWPE pipe is very smooth with little roughness and friction resistance. The roughness of UHMWPE pipe is only 0.0065 while steel pipe is 0.012. It can greatly improve transport efficiency and bring significant economic benefits.
Surface Comparison of UHMWPE and HDPE at 5000x magnification
 
3.Easy Installation
The density of UHMWPE material is 0.945g/cm3, so the pipe is light in weight, which is easy for transportation and do not need large-scale mechanical construction. The length of the UHMWPE pipeline is optional from 4.5~14m. The above properties contribute to short installation period.
4.Low Temperature Resistance
At the temperature of -70℃~80℃, UHMWPE pipe can work with normal excellent mechanical performance and offer long term working life.
5. High Corrosion Resistance
UHMWPE pipe can resist corrosion to strong acid, alkali, salt, seawater, sewage and corrosive soil which can avoid losses caused by corrosion.
6.Non-toxic and Tasteless, High Environmental Friendly
Polyethylene is a kind of national certified and environmental friendly material and non-toxic. It will not be attached by shellfish,fungus and other microorganisms in the seawater or sewage. It will not have any scale and microbial growth without increasing the roughness which can guarantee the stability of flow medium.
7. Good long-term Comprehensive Benefit and Low Maintenance Cost
Comprehensive benefit is a kind of long-term benefit formed by a variety of factors like construction investment, installation costs, run maintenance costs, service life and energy saving, ect. The comprehensive benefit of UHMWPE pipe is very high, especially the diameter gets larger, its cost gets lower.
Technical comparison of UHMWPE and other material
|
Item
|
Test Method
|
Unit
|
UHMWPE Pipe
|
HDPE Pipe
|
PA66 Pipe
|
PVC Pipe
|
Steel Pipe
|
|
Viscosity-average
Molecular Weight
|
ISO1628-3
|
104g/mol
|
500-1050
|
＜50
|
—
|
—
|
—
|
|
Approx Melting
Temperature
|
ISO11357.3
|
℃
|
136
|
129
|
255
|
160
|
1410
|
|
Water Absorption
|
ISO62-1999
|
%
|
＜0.01
|
＜0.01
|
3.8
|
0.5
|
—
|
|
Coefficient of Linear Thermal
Expansion
|
ISO11359-2
|
10-4/℃
|
1.5
|
1.2
|
0.8
|
0.9
|
0.17
|
|
Density
|
ISO1183-1-2004
|
g/cm3
|
0.935-0.945
|
＞0.940
|
1.13-1.15
|
1.4
|
7.8
|
|
（0.45MPa）
Heat Deformation Temp at 0.45Mpa
|
ISO75
|
℃
|
85
|
71
|
182-224
|
≥54
|
1230
|
|
Tensile Strength
|
ISO527
|
MPa
|
＞39
|
＜25
|
61
|
40
|
550
|
|
Yield Strength
|
ISO527
|
MPa
|
≥22
|
20
|
—
|
19
|
≥245
|
|
Tensile Elongation
|
ISO527
|
%
|
≥250
|
≥350
|
60-300
|
60
|
20
|
|
Gap Beam Impact
Strength
|
ISO179
|
KJ/m2
|
No fracture
|
＜27
|
5.9-10.8
|
＜10
|
No
fracture
|
|
Rockwell Hardness
|
ISO2039-2
|
R
|
40
|
33
|
85-120
|
118
|
45(C)
|
|
Friction
Coefficient
|
ISO8295
|
—
|
0.05-0.11
|
0.28
|
0.37
|
0.4-0.6
|
0.58
|
|
Mortar WearIndex
|
—
|
—
|
1
|
10
|
5
|
10
|
7
|
|
Scaling
|
—
|
—
|
NoScaling
|
Slight
|
Slight
|
Slight
|
Heavy
|
|
Corrosion
Resistance
|
—
|
—
|
Excellent
|
Common
|
Common
|
Common
|
Bad
|
Engineering Construction Benefits of UHMWPE pipe:
1.High Efficiency of Construction
Traditional wear resistant steel pipe has a series of shortcomings like easy corrosion,heavy in weight, not easy to handle, low construction efficiency ect.; While UHMWPE wear-resistant pipe is lightweight, flexible, convenient in handling, transportation, installation and use, which make the construction efficiency improved greatly, and reduced the cost of transportation and installation.
2.Convenient and Quick Installation
Wear resistant UHMWPE pipe is connected by flanges and fastened by bolts and nuts, do not need the sealing pad, so it has fast connection, easy disassembly, high strength, good sealing and other advantages; the pipe joints need no anti-corrosion treatment, so the installation and maintenance costs have been greatly reduced, and economic efficiency improved meanwhile.
3.Low maintenance cost
UHMWPE pipe has excellent wear resistance, under the same conditions, the service life is much higher than the traditional steel wear-resistant pipe, which can effectively reduce the rolling over maintenance work, and extending the replacement cycle of the pipeline, reducing the overall cost of the project.
Wear resistant UHMWPE pipe has good resistance to adhesion, the pipeline is not easy to scale in its operation time, avoiding the pickling process during the time.
Wear resistant UHMWPE pipe has good corrosion resistance characteristics, the anti-corrosion maintenance can be exempted during the pipe service time.
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