Netted Foam Filled Marine Fenders

Netted Foam Filled Marine Fenders

Cylindrical netted foam filled marine fenders commonly come in a variety of diameters. Smaller fenders, often used for small boats or in less - demanding applications, may have diameters ranging from 100 mm to 300 mm. These are suitable for protecting small yachts, fishing boats, and personal watercraft when docking at small marinas or private docks.
For medium - sized vessels and more general - purpose use in commercial ports, diameters typically range from 300 mm to 800 mm. These fenders can handle the impact forces generated by medium - sized cargo ships, ferries, and coastal vessels.
Larger cylindrical fenders, designed for large ocean - going vessels such as container ships and oil tankers, can have diameters up to 1500 mm or even larger. These massive fenders are essential for absorbing the significant impact energy when these large ships dock at major ports.
Length Variations
The length of cylindrical fenders also varies according to their intended use. Shorter fenders, around 500 mm to 1000 mm in length, are often used for smaller boats where space is limited. They can still provide effective protection while being more compact.
Medium - length fenders, typically 1000 mm to 2500 mm long, are common for medium - sized vessels. They offer a good balance between energy absorption and ease of installation.
Longer fenders, with lengths exceeding 2500 mm, are used for larger ships. These longer fenders can distribute the impact force over a greater area, enhancing the protection of the vessel's hull.

• There is no ISO standard of foam filled fenders presently, we design the test methods according to USACE / NAVFAC / AFCESA demands.
• Fender Cyclic-Compression Test. Compress the fender along its diameter between two parallel flat plate surfaces to a compressed dimension of 40 percent of its original diameter. Repeat the compression and release cyclic loadings for a minimum of 10 full cycles of compression. Permanent deformation, cracking, or tearing of the fender skin, fender core, or end fittings shall constitute failure of this test.
• Fender Sustained-Load Test. Apply a rated compressive load and hold this load for 24 hours. Record load and deflection each hour. Immediately after release of the load, measure rebound of the fender. Continue to record fender rebound for 24 hours. Failure of the fender or foam core to rebound to 90 percent of its original diameter after 24 hours shall constitute failure of this test. If the foam core is not bonded to the skin of the fender, devise and execute a means for measuring rebound of the foam core and for measuring the void between the foam core and the skin. The maximum rate of compression per minute shall be 20 percent of the total reaction force at 60 percent compression. The full compression cycle, not including rebound, shall take a minimum of 5 minutes.
• Fender Pull-Through Test. Devise and perform a test which will measure the resistance of the end fittings and internal chain to pull through the longitudinal axis of the fender. Failure of the chain, end fittings, or skin to resist rated force of pull-through tension shall constitute failure of this test. After loading, evidence of permanent deformation, cracking, or tearing of the fender or end fittings shall also constitute failure of this test.
• Skin Thickness Core Test.

Fairy

Email: Fairy@luhanggroup.com

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Initially established as Qingdao Luhang Marine Airbag Factory in 1988 and changed to Qingdao Luhang Marine Airbags and Fenders Co.,Ltd in 2011, Qingdao Luhang had been devoted itself to developing and manufacturing marine airbags and marine fenders for more than 2 decades.

The factory area is 56,000m² with building area of 21,000m². The company has registered capital of USD 3 million and fixed asset of USD1.2 billion. We have a full line of production equipment: rubber mixing machine, rubber roller machine, the China biggest vulcanization tanks, the biggest Press Inspection Machine, EVA foam processing machine, Foam shaping machines and SPUA spraying machine.

Through these years' development, we have full range of marine airbags and marine fenders:

Ship Launching Airbags for ship launching and docking in shipyards

Marine Salvage Airbags for salvaging sinked vessels or refloating objects from under water

Other Airbags for special usage

Pneumatic Rubber Marine Fenders for ships and docks berthing

Foam Filled Marine Fenders for ship and docks berthing

Fixed Dock Rubber Fenders for docks and wharfs

Marine Buoys

From the begginning we have been focusing on technological innovation. With a team of experienced technicans and engineers, we have developed some high tech marine products and got some petents. We have been approved as a supplier of Navy products.

Quality is our life line. We provide service of “three guarantees” (returning, repairing and replacing) on all our products in case of any defects due to the problems of material,manufacturing, performance under conditions of normal operation and maintenance.