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  • Product name: UHMWPE Mining Pipe
  • item No: 1017

 

 

UHMWPE Mining pipe

 

 

What is UHMWPE

Ultra High Molecular Weight Polyethylene (UHMWPE)  is a linear polyethylene with molecular weight of over2.5X 10^6 which is approximately ten times that of high  molecular weight high density polyethylene resins. The extremely high molecular weight of this resin offers superior performance of UHMWPE to any other thermal engineering plastic

  •  Highly wear resistance

          4 to 7 times more wear resistant than PE 100 and Q235 steel

  •  Extremely smooth surface

          Surface roughness of UHMWPE is 0.00022mm

  • Self-lubricating / non scaling
  • Superior impact resistance
  • Chemical /corrosion resistance
  • Anti aging
  • Lighter than HDPE

 

UHMWPE pipe

DRAGON, started in 2002, with 24 UHMWPE pipe production lines, overcame the difficulty of extrusion UHMWPE through improvement of equipment, formulation design, cooling system and technical parameters to achieve the continuous extrusion of UHMWPE pipe from DN30 to DN 1200 with molecular weight of 2.5 million to 9.2 million
 

Properties of UHMWPE pipe for mining

  • High Wear Resistance

         UHMWPE has the best wear resistant among all the engineering plastics. The higher molecular weight of the material is the more wear resistant of the UHMWPE pipeis. UHMWPE pipes are 4 to 7 times more wear                    resistant than PE 100 or Q235 carbon steel, 2.7times of SiMn 13 steel.Thus offers UHMWPE pipe longer life, less maintenance cost and downtime loss.

 

  • High impact strength, flexible and light

          The impact resistance of UHMWPE pipes is 5 times that of HDPE pipe, 2 times that of PC pipe and 10 times that of PTFE pipes.
          It means easy installation and less installation cost

 

  • Extremely smooth/ Non scaling / less pumping cost
     

         UHMWPE pipes have very smooth surfaces with low friction loss and high flow rate.
         Surface g roughness of UHMWPE pipe is 0.00022mm, which provides UHMWPE Pipe far superior anti-scaling properties to any other                 pipeline on the market today. It saved maintenance cost of acid cleaning pipes.
     

        UHMWPE has a friction coefficient of 0.05, compared to 0.28 for HDPE or 0.58 for Steel (ISO8295). Along with the benefits mentioned                 above, UHMWPE Pipes also offer significant cost savings through increased pumping efficiency.
        It means less friction loss, less pressure loss and greatly reduced energy inputs.

 

  •  High corrosion resistance
     

       For its saturated molecular structure, it has high chemical stability, resistance to all kinds of corrosive medium (acid, alkali, salt) and organic          solvent.    It will offer longer life than other pipelines in acid or corrosive applications.
 

  • Working temperature       

       -269 Degrees C to 85 degrees C.

  • Environmental friendly
  • UHMWPE is colorless, odorless and non-toxic.  UHMWPE pipe is extruded out from pure virgin UHMWPE unless some additives required by clients.

 

UHMWPE pipe Specification Weight Table

 

Applications

 

  •    Dredging

           Sand slurry discharge, mud discharge, dredger bearings, bearing house

  •  Mining

           Tailings pipelines, slurry transmission, concentrate transmission, cyclone elbow, wear liner

  •  Power Plant

            Flying ash and bottom ash discharge, water transmission

  •  Chemical/Corrosive fluid transmission
     
  •  Food/Grain transmission
     
  • Conveyor rollers
     
  • Quarries and Cement slurry transmission
     

 

UHMWPE material tensile strength test in Lab

 

 

Characters of UHMWPE Pipe 

1. Abrasion resistance – UHMWPE pipes have excellent abrasion resistance providing long life in abrasive slurry applications

2. 5x lower surface roughness (ISO 8295)

3. Increased temperature capability (particularly in the lower range), capable of -70 to +80 deg C operation

4. Comparable elongation performance

5. Anti-aging agent reduce UV degradation by comparison and otherwise increases design life

6. Colourless, odourless and non-toxic

7. Formed flanges, allowing for clean alignment. Mn16 inserts used at flange end to reduce turbulence down the pipe or bend

8. Much higher corrosion resistivity, comparable to Teflon

9. Higher tensile and yield tolerances

10. Adders can be provided that make UHMWPE flameproof (allowing for minimal degradation in environments where this is a factor, UHMWPE will still ignite at 300 deg C, but will immediately self-rectify)

11. Lighter and more durable, allowing for heavily reduced installation costs as large excavation and crane equipment will no longer be required

12. Unlike other materials, UHMWPE is self-lubricating (part of why it is used as a ball material for hip joint replacement)

13. All this allows UHMWPE to improve on ANY process currently utilising HDPE and most that include Steel

 

Product is checked and re-checked at every stage to ensure fault-free performance

          

 

Technical comparison of UHMWPE and other material

Item

Test Method

Unit

Uhmwpe pipe

Hdpe pipe

Steel pipe

Viscosity-average

Molecular Weight

ISO1628-3

104g/mol

300-1050

50

--

Approx Melting

Temperature

ISO11357.3

136

1129

1410

Water Absorption

ISO62-1999

%

0.01

0.01

--

Coefficient of liner thermal expansion

ISO11359-2

10-4/℃

1.5

1.2

0.17

Density

ISO1183-1-2004

g/cm3

0.935-0.945

0.940

7.8

(0.45Mpa)

Head deformation tempat

ISO75

85

71

1230

Tensile strength

ISO527

Mpa

39

25

550

Yield strength

ISO527

Mpa

≥22

20

≥245

Tensile elongation

ISO527

%

≥250

≥350

20

Gap beam impact

Strength

ISO179

KJ/m2

No fracture

27

No fracture

Rockwell hardness

ISO2039-2

R

40

33

45(C)

Friction coefficient

ISO8295

--

0.05-0.11

0.28

0.58

Mortar wearindec

--

--

1

10

7

Scaling

--

--

No scaling

Slight

Heavy

Corrosion resistance

--

--

excellent

Common

Bad

 

 

  Mine Industrial: mineral mud conveying, high pressure water supply, gas supply pipeline underground coal mine.

  Electric Power System: fly ash conveying of power plant, chemical water cycle and sulfur removal system 

  Coal Mine Industry: coal powder/ pulverized coal,coal water slurry transportion, mine air supply, ventilation and drainage systems , and the desulphurization system

  Chemical Industry: transmission of high corrosive medium, like strong acid, strong alkali, etc and conveying of bittern, salt slurry, crude salt of salt chemical 

  Oil exploitation:transportation of crude oil and natural gas, waste water reinjection

  Metallurgy Industry: conveying of coke powder, mineral powder, pulp and oil refining slag   

  Dredging Projects: dredging work, sediment transportation of the river, lake, sea port, wharf, etc 

  Marine Engineering: conveying of seawater, fresh water in desalination process

 

 
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