How To Choose UHMWPE Sheet For Marine Fender Pads

Ultra-high molecular weight polyethylene (UHMWPE) fender is recognized as the best surface protective material in marine fender system. It has the advantages of anti-corrosion, ultraviolet aging, wear resistance and impact resistance. It can perfectly replace rubber, steel plate, wood board and ordinary HDPE fender pad, and solve various application pain points of traditional materials. Different thickness sizes, customized services, and fender manufacturers determine whether you can choose the right marine fender pad.

What is UHMWPE Marine Fender Pads?

UHMWPE marine fender pad is a wear-resistant sliding protective plate made of ultra-high molecular weight polyethylene raw material, also known as PE 1000 marine fender pad, which is specially adapted for maritime fender system. It is mainly installed on the front of the rubber fender, the dock berthing wall, the steel structure panel or the ship’s anti-collision position.

The core value of PE1000 sheet is to build a layer of low friction, high wear resistance, impact resistance protection interface between the ship and the dock structure, completely change the traditional fender force wear mode.

The complete PE1000 marine fender pad force transmission path is very clear: ship hull → UHMWPE fender pad → rubber fender body → dock/trestle foundation structure.

In addition to being suitable for various tapered, arched, cylindrical and D-shaped rubber fenders, UHMWPE marine fenders can also be directly used in scenes such as wharf walls, pontoons, barges, tugboat work boats, anti-collision strips, etc.

What Makes UHMWPE The First Choice For Maritime Fenders?

Marine conditions have the characteristics of high salt spray, high humidity, strong ultraviolet, large temperature difference, and high-frequency impact sliding. The weather resistance, wear resistance and impact resistance of the protective plate are extremely high.

Advantages of PE1000 marine fender pad:

• Ultra-low friction coefficient: the friction coefficient of steel under dry and wet conditions is only 0.10-0.22, with self-lubricating characteristics. The ship berthing and sliding smoothly, there will be no locking, caton, dragging and scraping, and the lateral shear force will be greatly reduced.
• Super wear-resistant and scratch-resistant performance: UHMWPE sheet’s wear-resistant performance far exceeds that of ordinary steel, HDPE plastic and solid wood plate. It can be adapted to high-frequency berthing operations in ports and is not easy to wear and thin after long-term use.
• Extreme weather resistance and temperature resistance:the working temperature range can reach -80 ℃ to +80 ℃, it will not crack and harden in low temperature environment, it will not deform and soften after high temperature exposure, and it is suitable for complex working conditions in north, south and ocean.
• Near zero water absorption rate: water absorption rate is less than 0.01, long-term immersion in sea water will not absorb water expansion, decay and mildew, can completely resist sea water corrosion, marine borer erosion and ozone aging.
• Lightweight and easy to process: PE1000 has a density of only 0.93-0.96g/cm³, is light in weight, does not add additional load to fenders and wharf structures, and supports precision UHMWPE sheet processing such as cutting, drilling, edge milling, chamfering, etc.

Marine Fender Pads Material Comparison

Pure rubber fender pads: high friction coefficient, easy skidding and scraping paint when berthing, long-term friction and easy aging and cracking, high maintenance frequency and high comprehensive cost.

Steel marine fender: the friction coefficient is moderately high, salt spray corrosion and rust are extremely easy to occur, and the maintenance workload of rust removal in the later period is extremely large, and the wear resistance is not lasting.

Solid wood/ordinary HDPE marine fender: general wear resistance, low temperature brittle crack, sea water easy corrosion mildew, short service life, only suitable for small simple dock.

Marine garde UHMWPE sheet: friction coefficient is very low, wear resistance, impact resistance, corrosion resistance and aging resistance, maintenance is very low, the service life is far beyond all traditional materials, suitable for all kinds of large and medium-sized port heavy load conditions.

Many ports have problems such as short-lived fender plates, peeling, uneven wear and paint scraping. The core reason is not the product quality problem, but the mismatch between the selection parameters and the working conditions. The following six core parameters are the key basis for engineering selection.

UHMWPE sheet material grade

It is strictly prohibited to use recycled UHMWPE plates under marine heavy load conditions. The molecular chain of the recycled material is broken, the structure is loose, the performance is extremely unstable, and the service life is only 1-2 years, which is far from the standard of port engineering.

Regular marine special PE1000 sheet, must use 100 new native UHMWPE raw materials. Civil small terminal optional 300-5 million molecular weight plate, commercial ports, container terminals, bulk terminals must choose 500-9 million ultra-high molecular weight grade.

For extreme conditions such as ultra-high frequency sub-berthing, large ships, ice area operations, etc., double sintering hardening process UHMWPE plate can be selected to further enhance the wear resistance and impact resistance. When purchasing, we must ask for material test report to verify the purity and molecular weight parameters of raw materials.

Coefficient of friction

The friction coefficient of PE1000 fender plate directly determines the berthing safety and hull protection effect of the ship. The friction coefficient is too high, the ship sliding resistance is large, it is easy to produce shear force, scratch the hull paint, damage the rubber fender.

High-quality marine grade UHMWPE plate, dry and wet state of steel friction coefficient is stable at 0.10-0.22, self-lubricating performance is excellent. For container terminals and angle berthing terminals with high frequency operation, this parameter must be strictly controlled to eliminate non-standard low-quality plates.

Surface treatment

More than 90% of the marine fender scene, are suitable for matte smooth surface. The smooth surface of UHMWPE plate can maximize the advantage of low friction, ensure the smooth sliding of the ship, protect the hull coating in all directions, and adapt to most conventional berths.

Only under the special wet and slippery working conditions of serious water accumulation, icing and ultra-low friction, fine texture UHMWPE plate surface can be selected to improve adhesion. It is strictly prohibited to use coarse grain plate, which will greatly increase the friction resistance and wear speed.

All UHMWPE fender edges used for shipping must be chamfered to remove sharp corners. Sharp corners can easily scratch the hull when the ship is berthing, and the chamfering process is the basic standard requirement of engineering installation.

UV resistance and weather resistance grade

Port berths are exposed to sunlight, sea breeze, rain and fog for a long time, and ordinary UHMWPE plates will undergo pulverization, embrittlement, cracking and aging, and fail quickly.

Standard maritime grade PE1000 plate will add 2%-2.5 carbon black for UV stabilization. Black marine grade UHMWPE sheet has the best ultraviolet resistance and aging resistance. It is the preferred style for ports and can resist exposure, salt spray and ozone erosion for a long time.

If the project requires color identification zoning, color PE1000 plate can be selected, taking into account the visual distinction and weather resistance, to meet the special engineering requirements.

Thickness selection

The thickness of UHMWPE plate determines the wear allowance, bearing capacity and service life, which is the core parameter of selection. Insufficient thickness will lead to rapid wear, bolt exposure, excess thickness will cause cost waste, need to accurately match the working conditions.

Marine fender for small vessels (tonnage ≤ 500 tons): recommended thickness 10-30mm, service life of up to 5-15 years, suitable for small docks, private berths, leisure maritime scenes.

Marine fender is used for offshore small cargo ships (tonnage 500-5000 tons): recommended thickness 15-50mm, service life 10-20 years, suitable for small and medium-sized commercial ports, coastal conventional berths.

The marine fender is used for container ships (tonnage 5000-20000 tons): the recommended thickness is 40-80mm, the service life is 12-25 years, and it is suitable for large commercial ports and freight terminals with high frequency operation.

Marine fender is used for large oil tankers: recommended thickness 50-120mm, maximum customizable 150mm, service life 15-30 years, suitable for ocean core ports and berths under extreme working conditions.

The most common specification of conventional commercial ports is 50-60mm, taking into account the cost performance and wear margin, which is the mainstream choice for engineering landing.

Installation and fixing

The selection of marine grade PE1000 plates shall be synchronized with the installation scheme of marine fender, otherwise the high-quality plates will also be loosened, deformed and fall off due to improper installation. 316L/A4 maritime grade stainless steel is preferred for fasteners to prevent ordinary 304 stainless steel and avoid salt spray corrosion and rust.

The countersunk hole and countersink hole of UHMWPE plate shall be prefabricated in advance to allow the bolt to sink completely below the plate surface without convex structure to avoid contact and scratch the hull.

When selecting the type, it is necessary to ensure that the effective wear-resistant thickness of UPE plate is greater than the height of the bolt head, so as to ensure that there will be no potential safety hazards such as bolt exposure, scraping and falling off after long-term wear.

UHMWPE Marine Fender Pads Size & Customized Specification

There is no unified international fixed standard for marine fender, which is customized and cut according to fender type, wharf structure and installation area. However, there are mature general specifications in the industry, which can meet most engineering requirements.

Thickness range of UHMWPE sheet

The thickness range of UHMWPE sheet is 6-150mm, and 200-400mm thick plate can be customized under special heavy load conditions. The main thickness commonly used in the market is concentrated in 20-100mm, covering the needs of light and heavy full working conditions.

• 6-20mm UHMWPE plate:the made marine fender includes private yacht dock, small sightseeing boat berth, inland river boat dock, pontoon side protection, wharf corner anti-collision strip, steel structure auxiliary wear-resistant backing plate, ship deck anti-skid anti-collision patch, etc. The thickness of thin PE1000 sheet is light, easy to install and low cost.
• 20-40mm UHMWPE plate:used for the production of marine fender for small and medium-sized inland river terminals, fishing ports and working boat terminals. It can effectively resist daily slight impact and sliding friction, and the normal service life can reach more than 10 years.
• 40-80mm UHMWPE plate: used for the national commercial ports, general cargo terminals, ferry terminals of the marine fender production. It is suitable for 500-20000-ton bulk carriers, container feeder ships and coastal freighters. It is suitable for mainstream rubber fender structures such as conventional tapered fenders, arched fenders, D-shaped fenders, cylindrical fenders, etc. It can cope with the normal berthing impact many times a day, has sufficient wear resistance allowance, and is the thickness range with the highest cost performance and the widest application.
• 80-150mm UHMWPE plate: can withstand ultra-high berthing energy, large angle oblique berthing, high-frequency continuous impact. At the same time, it is suitable for ports in northern ice areas, high tide difference berths, and offshore wharves with large surges, effectively avoiding the problems of rapid wear-through, deformation and bolt exposure of plates.
• 200-400mm custom thickened plate:belongs to the engineering special plate, no spot, only for extreme working conditions customized. Mainly used in offshore wind power platform berthing area, large ship repair dock, large offshore drilling platform berth, ultra-high frequency operation core hub port, with strong impact resistance, anti-extrusion, anti-shear capacity, can achieve more than 30 years of long service life.

Dimensions of UHMWPE sheet

• 500 × 500mm UPE marine fender pad: small and light in whole, simple to install, extremely low replacement cost, suitable for scattered and small protection points, suitable for small ships, yacht marinas and light fender equipment.
• 800 × 800mm marine fender pad: common small and medium-sized square and rectangular rubber fender, which can completely cover the berthing contact area of conventional working ships.
• 1000 × 1000mm / 1000 × 1500mm UPE marine fender: suitable for small and medium-sized freight terminals, ferry terminals, coastal general berths and transit terminals. It can perfectly cover the front area of a single fender, with regular installation, uniform stress and no protection blind area. It is the preferred conventional marine fender pad size for commercial port renovation and new wharf.
• 1500 × 2000mm / 2000 × 3000mm UPE marine fender: designed for medium-sized container terminals, bulk cargo terminals and coastal main freight berths. Greatly improve the overall stability of the fender system, suitable for normal high-frequency operation of commercial terminals.

Customized UHMWPE sheet machining service

Regular UHMWPE marine fender pad manufacturers can provide a full set of precision processing services, including CNC precision cutting, special-shaped radian processing, precision drilling, counterbore chamfering, color customization, grain customization, etc., which can fully match all kinds of non-standard fender structures and dock shapes.

How To Purchase Custom UHMWPE Fender Pads?

Accurate procurement is the key to ensure the long-term stable operation of the fender system. A complete standardized procurement process can avoid problems such as parameter mismatch, processing error, and wrong board.

1. Clear working condition parameters. Confirm the ship tonnage, berthing frequency, fender model, installation structure, tidal environment, ultraviolet intensity, whether there is icing conditions and other core information.
2. Lock UPE material parameters.Determine raw material grade, molecular weight, UV stabilization process, board type, board thickness, length and width dimensions, and color requirements.
3. Confirm the details of processing PE sheet.Provide construction drawings or size parameters, and specify the processing requirements such as hole spacing, hole diameter, counterbore depth, chamfering specifications, and special-shaped radian.
4. docking professional marine fenderpadmanufacturers. Priority is given to the source UHMWPE plate factory with maritime engineering experience, material report and support for customized processing, and inquiry to confirm the delivery date, quality standard and after-sales guarantee.
5. Acceptance admission.After arrival, check the thickness, size, process and hole position of PE1000 plate, check the material inspection report, sample check the flatness and workmanship quality of the plate surface, and enter the site for installation after passing the inspection.

How To Choose A Reliable UHMW-PE Fender Manufacturer?

Material quality directly determines the service life and operation and maintenance costs of the fender system, the strength of the manufacturer is the core guarantee of product quality, selection and procurement can be selected through six dimensions of high-quality suppliers.

1. Check the quality of raw materials.100% new UHMWPE raw material certificate, molecular weight test report, wear resistance, impact resistance, water absorption, friction coefficient and other complete MTR test documents must be provided to prevent recycled materials and mixed ingredients.
2. Verifying maritime engineering experience. Priority is given to PE1000 fender manufacturers for long-term service ports, docks and maritime engineering, and they are familiar with fender installation logic, wear allowance, thermal expansion characteristics and other professional process points.
3. Confirm the production processing capability. With independent sintering molding, CNC precision machining, punching chamfering, special-shaped customization capabilities, can directly produce finished products without secondary processing, adapt to engineering installation requirements.
4. Check the qualification certification. With ISO9001 quality system certification, the products can meet the formal port engineering acceptance standards.
5. Examine the technical service capabilities. High-quality PE1000 fender manufacturers can provide free guidance on thickness, specifications and installation scheme selection according to on-site working conditions to adapt to the personalized needs of different berths.
6. Compare UHMWPE sheet price/performance ratio.Reject simple low-cost products, low-cost recycled materials sheet short-term damage, higher comprehensive operation and maintenance costs, priority to choose stable quality, after-sales improvement, long life cost-effective products.

FAQ About UHMW-PE Marine Fender Pad

Q1: Is UHMWPE sheet resistant to seawater corrosion?

Fully resistant to seawater corrosion. The water absorption rate of the plate is less than 0.01%, long-term immersion in sea water will not expand, rot, mildew, can resist salt spray, sea water, marine organisms, most chemical medium erosion, is a special material for maritime corrosion.

Q2: Will UHMWPE marine fender scratch ship paint?

No, it won’t. The plate surface is smooth, the friction coefficient is extremely low, no hard particles, with the chamfering process, the ship berthing sliding smoothly, can maximize the protection of the hull coating, to avoid scratches, paint, wear problems.

Q4: Can custom UHMWPE sheets be manufactured?

Support UHMWPE fender pad customization service. It can process square UHMW-PE fender and arc UHMW-PE fender pad, and can accurately prefabricate hole position, counterbore and chamfer, which is suitable for all types of rubber fender and wharf steel structure.

Q5: What specification should you choose when purchasing UHMW-PE sheets?

Please provide the PE1000 sheet thickness, length and width dimensions, quantity, raw material grade, surface finish, holeposition specifications, mounting configuration, vessel operating conditions, and environmental factors. Submission of CAD drawings will enable precise custom manufacturing.

Conclusion

Choosing the right UHMWPE fender pad is a pain point for modern port fender systems. Xinxing Plastic offers a full range of marine-grade UHMWPE fender panels, providing one-stop services that include standard UHMWPE sheet sizes, custom UHMWPE sheet fabrication, CNC plastic machining, and predrilled, chamfered holes. Based on your berth conditions, vessel tonnage, and fender model, we can deliver tailored selection recommendations and materialcertification reports.