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Your present location:HomeProductsLined Steel Pipes > UHMWPE-Steel Composte Pipe
  • Product name: UHMWPE-Steel Composte Pipe
  • item No: 2012

 

 

                       

 

Produce process of UHMWPE -steel Pipe :

UHMWPE composite pipe is made of UHMWPE pipe and carbon steel pipe.

Its outer layer is the steel pipe with flange as the pressure standing protective layer, UHMWPE pipe is lined inside as wear layer, anti corrosive pipe with extremely smooth surface. The inner UHMWPE pipe is extended out of the outer layer of carbon steel pipe and flanged as connection of pipe.
 
Detailed specification as below:

Outer steel pipe

Inner uhmwpe pipe

Uhmwpe-steel composited pipe

Type

Specification/mm

m/kg

Specification /mm

Inner diameter/mm

m/kg

m/kg

Working pressure Mpa

Straight seam steel pipe

Φ89*3

6.36

Φ75*8

59

1.63

7.99

3.0

Seamless steel pipe

Φ102*4

9.67

Φ89*10

68

2.41

12.08

4.0

Straight seam steel pipe

Φ140*3.5

11.79

Φ130*10

110

3.66

15.45

3.0

Straight seam steel pipe

Φ165*3

11.99

Φ159*10

139

4.54

16.53

3.0

Spiral steel pipe

Φ180*5

21.57

Φ168*10

148

4.81

26.38

4.0

Spiral steel pipe

Φ194*4

18.74

Φ184*12

160

6.29

25.03

4.0

Spiral steel pipe

Φ219*6

31.52

Φ203*8

187

4.57

36.09

4.0

Spiral steel pipe

Φ245*6

35.36

Φ230*10

210

6.70

42.06

4.0

Spiral steel pipe

Φ273*6

39.51

Φ256*10

236

7.49

47.00

4.0

Spiral steel pipe

Φ325*6

47.20

Φ310*10

290

9.14

56.34

4.0

Spiral steel pipe

Φ373*4

36.40

Φ360*10

340

10.66

47.06

4.0

Spiral steel pipe

Φ377*6

54.89

Φ360*10

340

10.66

65.55

3.0

 

Character of UHMWPE Steel Composte Pipe

1.     High wear resistance, the wear resistance is 4 to 7 times of Q235 steel pipe, 10 times of HDPE, it has the smallest friction coefficient in plastic ranks

2.     High impact strength, is 5 times of oridinary PE pipes, 4 times than HDPE, 2 times of polycarbonate pipe, and 10 times of PTFE pipe

3.     Low-energy, high self-lubrication and not adhesion, friction coefficient of only 0.006, the UHMWPE pipe can save energy of 20% under the same flow rate

4.     Without scale sediment/no-scale, surface roughness of Ra0.00022, no dirt, no bacterium in long term service

5.     High weatherability, the molecular weight of UHMWPE is more than 2 million, as saturated molecular structure, it has strong ability of aging under ultraviolet light , and mechanical properties is stable if not lower than -70℃

6.     No pipeline leakage, electric melting connection make the pipeline without funnelled

7.     Cost-saving, Maintenance-free: small working face, low requirement of foundation, and with the performance of wear-resisting, corrosion resistance, frost resistance and anti-pollution, etc, after the operation, the pipe do not need to make daily maintenance, such as anti-rust and freeze-proofting, descaling, etc, and maintenance cost can be saved by more than 95%.

8.     Non-toxic, odourless and high environment protection: it has smooth surface, will not be microbial adhesion in the ocean or sewage engineering, and ensure the stability of water quality

9.     High toughness, breaking elongation≥350%, without fracture by charpy impact test

10.  High corrosion resistance, as saturated molecular structure,  it has high chemical stability, 

 

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

 

           

 

 

UHMWPE lined steel pipe combinds advantages of both UHMWPE and steel which make it wear resistant, impact resistant, anti-corrosion, resistant to high pressure, self-lubricating, impact resistant. 
The pipeline equipments are widely used in dredging, mining, power plant,etc.

Chemical industry:the transmission of sand slurry, mud,

Thermal power system:powder and coal ash conveying

Mining industry:backwater pipelines, mine tailings and slurry transmission

Coal industry:high-pressure transport of pulverized coal and coal-water slurry of coal preparation plant

And the transport of mud and corrosive media with slag in other industries

 
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