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Abrasion resistant pipe

Ultra high molecular weight polyethylene pipe

UHMWPE wear pipe
UHMWPE wear pipe
UHMWPE pipe bend
UHMWPE pipe bend

What is UHMWPE

UHMWPE pipe for dredging
UHMWPE pipe for dredginge
UHMWPE pipe with flange
UHMWPE pipe with flangee

Ultra-high molecular weight polyethylene (UHMW-PE) is a new kind of engineering thermoplastics with more than 3 million viscosity-average molecular weight.

Ultra-high molecular weight polyethylene pipe has superior performance over conventional HDPE pipe such as very high wear resistance, impact resistance, excellent resistance to internal pressure strength, resistance to environmental stress cracking, intrinsically self-lubricating, anti-adhesion, low temperature resistance and excellent chemical resistance.

Ultra-high molecular weight polyethylene (UHMW full name is ultra-high molecular weight polyethylene pipe) is a thermoplastic engineering plastics with an average molecular weight greater than 1.5 million, which is polymerized by ethylene and butadiene monomer under the action of a catalyst.

Ultra high molecular weight polyethylene is superior in comprehensive performance, abrasion resistance, low temperature, corrosion resistance, self lubrication, impact resistance in all plastic for the highest value, wear-resistant properties than PTFE, nylon, carbon steel and other materials, can be long-term in-169 to +80℃ conditions, known as "amazing" engineering plastics, Ultra-high molecular weight polyethylene Engineering Plastics (UHMW---PE) pipeline technology is becoming more and more mature in China, more and more projects adopt this kind of pipeline, become a kind of new thermoplastic engineering plastics with good price, it almost concentrates the advantages of various plastics, wear-resisting impact, self-lubricating, corrosion resistance, low temperature, hygienic non-toxic, Non-adhesion, water and other comprehensive properties, is an ideal pipe, can be widely used in mining (ore powder, pulp, tailings discharge pipelines) metallurgy, electricity, petroleum, textile, papermaking, food, chemical, mechanical, electrical and other industries.

Role of Molecular Weight

UHMWPE denotes Ultra High Molecular Weight Polyethylene which is a polyethylene polymer with an average molecular weight is greater than 3,100,000 as defined by ASTM D4020 – Standard specification for UHMWPE polymers. This molecular weight is well above the molecular weight of most typical polymers which are between 1,000,000 and 400,000 thus earning the title Ultra-High Molecular Weight Polyethylene. Polyethylenes with molecular weight in the 3.1 -4.5 Million range have been found to exhibit the best combination of impact strength and abrasion resistance.

For Polyethylene molecular weight classification the following guidelines can be used:

Attributes of UHMWPE Pipes

Excellent characteristics of piping

Ultra-high molecular weight polyethylene pipe (UHMWPE) wear-resistant plastic crown, is carbon steel, stainless steel 3-7 times. Low friction coefficient, self-lubricating, anti-adhesion, no scaling, reduce the energy transmission of materials. Top of the plastic in the impact strength column. The impact energy absorption value is highest in all plastics and has a silencing nature. Good chemical stability. Excellent low-temperature resistance. Sanitation is non-toxic to food and drugs.

1, very high wear resistance, UHMW products unique molecular structure, so that it has a very high ability to resist sliding. Wear resistance is higher than the general alloy steel 6.6 times times, stainless steel 27.3 times times. is phenolic resin 17.9 times times, nylon six 6 times times, polyethylene 4 times times the annual wear rate of 0. 58㎜, the service life of pipeline is greatly improved.
2, extremely high impact resistance, in the existing engineering plastics, the impact toughness of this product is the highest, many materials in severe or repeated explosions of the impact of cracks, breakage, crushing or surface stress fatigue. This product according to the GB1843 standard, carries on the cantilever beam impact experiment to achieve no breakage.
3, excellent chemical stability, this product can withstand strong chemical erosion, in addition to certain acids at elevated temperatures there is a slight corrosion, in other lye, acid solution is not corrosion. Can be used in concentrated hydrochloric acid with a concentration of less than 80%, the performance is fairly stable in nitric acid with a concentration of less than 75% and a concentration of less than 20%.
4, good self-lubricating, because this product contains wax-like material, and its own lubrication is good. The coefficient of friction (196n,2 hours) is only 0.219mn/m (GB3960). Self-sliding performance is superior to oil-lubricated steel or brass. Especially in the environment, dust, sand and many places, the product of its own dry lubrication performance more fully displayed. Not only can exercise freely, and protect the related workpiece does not wear or pull injury.
5, non-toxic to the biological, ultrahigh molecular weight Polyethylene Engineering Plastics (UHMW----PE) pipeline to adapt to water quality fluids, solid particles, powders, slurry, etc., the traditional metal pipe difficult to meet the requirements of ultra-high molecular weight polyethylene (UHMW----PE) pipeline can be replaced by extremely high corrosion resistance, high wear resistance, Self-lubricating absorption shock and other comprehensive properties, in various industries have a wide range of applications in solid particles, powder, slurry, gas transport, has a unique advantage.
6, the unique low-temperature resistance, this product is excellent low-temperature resistance, its impact resistance, wear resistance in Minus 269 degrees Celsius basic unchanged. It is the only kind of engineering plastics which can work at a temperature close to absolute 0 degrees at present. At the same time, the temperature of the product is wide, can be long-term in the 269 ℃ to 80 ℃ of work.
7, the surface is not adhered to, this product because of the small friction coefficient and the infinite, it has a good surface adhesion. The existing materials generally in the ph value of more than 9 of the medium are scaling, this product is not scaling, the characteristics of fire power plant for the discharge of fly ash system has great significance. In crude oil, mud and other transportation pipelines are also very suitable.
8, the best resistance to environmental stress cracking, resistance to environmental stress cracking >4000h, elastic modulus is 1.5 times times more than PE100, anti-fatigue strength of 500,000 times.
9, other characteristics, the product also has absorption, noise absorption, anti-static, the neutron has shielding capacity, do not absorb water, light weight. Easy machining, coloring and other outstanding characteristics.

Benefits of Ultra High MW

Exceptionally High Wear

Ultrahigh molecular weight polyethylene (UHMWPE) shows unusually high wear resistance compared to most materials. This is due to a combination of very high molecular weight and the resulting entanglements and relative surface softness with a slippery waxy surface.

Application of UHMWPE pipe:

UHMWPE pipes are widely used in the industries of dredging, mining, metallurgy, electric power, oil, textile, paper, food, chemical, mechanics, gas, tunneling ect.

UHMWPE Pipe for Dredging Applications

Size range of UHMWPE pipe:

DN mm 0.6Mpa 0.8Mpa 1.0Mpa 1.25Mpa 1.6Mpa 2.0Mpa
W.T mm W.T mm W.T mm W.T mm W.T mm W.T mm
65 8 9
96 9 10
110 8 10
130 8 10 12
159 10 12 15
168 8 10 13 16
205 8 10 12 15 18
219 9 11 13 16 20
236 10 12 14 18 22
250 10 12 15 19 23
273 9 11 13 16 21 25
280 9 11 14 17 21 26
300 10 12 15 18 23 27
315 10 12 15 19 24 29
325 10 13 16 19 24 30
350 11 14 17 21 26 32
377 12 15 18 22 28 35
400 12 16 19 24 30 36
415 13 16 20 25 31
426 13 17 20 25 32
536 16 21 26 23
560 16 22 27 33
630 19 25 30 37
652 20 26 32 38
710 21 27 34
800 23 31 38

Properties of the Ceramic-lined Steel Composite Pipes >>
Ceramic (Corundum: a-Al2O3) lined abrasion resistant straight pipe and fittings are lined with highly abrasion resistant ceramic by SHS ----Characteristics of SHS self-burning ceramic composite pipe
Abrasion resistant pipe specification, Standard and identification

Classification and designation
of wear-resistant pipes
for power industry

Pipe elbows be Long-term
use in power plants

Because the outer surface behaves like mild steel, the product can be cut and welded with proper procedure in the field, configured into a variety of fittings, and can accept the standard end options of flanges, weld rings and couplings.

Abrasive Applications

One-hundred-twenty-nine-million tons of coal ash—a byproduct of the coal burning process—is produced every year. Most power plants transport the coal ash in liquid form to large surface impoundments or in solid form at landfills near the facility through long lengths of steel piping, which can range in length from several thousand feet to miles.

Wear-resisting comparative table of ceramic lined pipe
Sand injection test 30% Transfer test of sludge with SiO2
Material Volume diminution
Material Volume diminution
Ceramic lined
Steel pipe
0.0022 Ceramic lined
Steel pipe
Ceramic pipe
0.0025 S45C 25
Application of Abrasion resistant pipe

Abrasion resistant pipe applied in coal-fired power plant ash and slag discharge tube, powder, powder tube, desulfurization pipeline,in addition also widely used in the following industries:



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