UHMWPE Pipe in Chemical Industry

Because the UHMWPE pipe has small frication resistance, self-lubrication property,high wear resisting, it can be widely used in pneumatic conveying field, effectively reduce the wear and corrosion resistance in the process of conveying, and reducing power consumption in the process of delivery.It has bvious advantages in the aspect of construction installation and efficiency

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uhmwpe the in and of wear conveying pipe has

Classification:

UHMWPE Dredge Pipe

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Description

Description

Features

Characters of UHMWPE Pipe

• Abrasion resistance – UHMWPE pipes have excellent abrasion resistance providing long life in abrasive slurry applications.
• 5x lower surface roughness (ISO 8295)
• Increased temperature capability (particularly in the lower range), capable of -70 to +80 deg C operation
• Comparable elongation performance
• Anti-aging agent reduce UV degradation by comparison and otherwise increases design life
• Colourless, odourless and non-toxic
• Formed flanges, allowing for clean alignment. Mn16 inserts used at flange end to reduce turbulence down the pipe or bend
• Much higher corrosion resistivity, comparable to Teflon
• Higher tensile and yield tolerances
• 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)
• Lighter and more durable, allowing for heavily reduced installation costs as large excavation and crane equipment will no longer be required
• Unlike other materials, UHMWPE is self-lubricating (part of why it is used as a ball material for hip joint replacement)
• All this allows UHMWPE to improve on ANY process currently utilising HDPE and most that include Steel

Specifications

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

Application

•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