Natural Rubber D Type Fender Marine Ship Berthing Protection

D Type Marine Rubber Fender

D type rubber fender is one of the most classic and widely used marine fenders in small ports, fishing harbors, jetties, barges, tugboats and workboats. With a simple D-shaped structure, it provides stable cushioning and effective collision protection for ships and dock facilities.

Product Description:

Material Advantages:

The material selection is flexible. The regular version uses imported natural rubber from Thailand combined with styrene-butadiene rubber to ensure the basic toughness and impact resistance. The high-end model is made of specially formulated ethylene propylene diene monomer (EPDM) rubber with a Shore hardness of 70, which is suitable for harsh Marine environments. If it is used in high-frequency mobile scenarios, chloroprene rubber will be selected, which has both high tensile strength and water resistance. Some of the products have undergone non-toxic and odorless vulcanization treatment, meeting the green environmental protection standards.

Manufacturing Process:

Raw material preparation: The process for the two types of fenders is the same. First, natural rubber, synthetic rubber, carbon black, anti-aging agents and other additives are mixed in proportion. The mixing is completed in two steps. The first step is to blend rubber with fillers to form a smooth base. The second step is to add sulfur and other vulcanizing agents to ensure the stability of material performance.
Forming processing: Both cylindrical fenders and D-shaped fenders are mainly formed by extrusion molding. The mixed rubber is extruded into shape through a mold, which can precisely control the size. For example, the diameter of cylindrical fenders can range from 20mm to 2700mm, and the specifications of D-shaped fenders cover multiple models from 20mm to 300mm. For special requirements, D-shaped fenders can also be made into specific arcs through vulcanization treatment to fit the circular curved surfaces of the bow and stern of ships.
Strengthening and curing: The semi-finished products after molding need to undergo high-temperature and high-pressure vulcanization treatment to cross-link rubber molecules, enhancing structural strength and wear resistance. Subsequently, the flat back of the D-shaped fender, the end ports of the cylindrical fender and other parts are ground. Meanwhile, installation holes can be prefabricated and pre-bending treatment can be completed as required.
Factory inspection: Test the compressive strength, tear strength and aging resistance of both. For cylindrical fenders, an additional air tightness test is required. For D-type fenders, the arc fit and installation firmness need to be tested. For the white version, the uniformity of the coloring should be checked. Only after there is no fading or cracking can it be packaged and sent out of the factory.

Features:

• Classic D-type design with stable structure and excellent compression performance
• Made of high-quality natural rubber with high elasticity and durability
• Good resistance to seawater, UV, ozone and aging
• High energy absorption, low reaction force, long service life
• Easy to install, fix and replace
• Can be installed with bolts or embedded according to dock structure
• Custom sizes, lengths and hardness available
• Cost-effective for small and medium berthing projects

Technical Parameters:

Applications:

It is mostly used in medium and small-sized scenarios, such as small docks, yacht docks and the sides of workboats. It can also be used for pilot ships, tugboats and other operation vessels, as well as non-marine scenarios such as truck loading and unloading areas. Its compact size design is particularly suitable for frame-type docks and is often used as an auxiliary protective accessory on the side of the hull, in combination with cylindrical fenders, to enhance the comprehensiveness of protection.

Support and Services:

After-sales consultation: We provide 24/7 customer service to answer customer questions , such as specification selection, usage methods, and maintenance points.

Regular follow-up visits: The manufacturer may conduct regular follow-up visits to customers to understand the usage and collect customer feedback in order to continuously improve product quality and service levels.

with its excellent quality and attentive service, builds a solid guarantee for your maritime career. Choosing us means choosing safety, efficiency, and worry - free operation. Embark on a new journey of navigation, starting from choosing our fender!

Any question please let us know ,our JinCheng maritime will provide you the best service with 7*24 hours ~