DA-Type Arch Rubber Fender ready for shippment

DA-Type Arch Rubber Fender ready for shippment

High-performance DA-type arch rubber fenders, a widely trusted anti-collision solution for ships, piers, workboats and offshore berthing facilities. Featuring a semi-circular arch hollow profile and prefabricated mounting holes, this fender balances energy absorption, low reaction force and simple installation. It fully complies with PIANC guidelines, ISO 17357 and the inspection requirements of BV, ABS, DNV, LR and CCS classification societies

Production Overview

DA arch rubber fenders are manufactured with high-quality natural rubber compound mixed with anti-aging, ozone-resistant and anti-ultraviolet additives. The production flow includes rubber compounding, internal mixing, extrusion, mould hot vulcanization, finish machining, hole positioning, visual inspection, dimensional verification and performance sampling test. Every finished unit will be checked for surface defects, hardness, compression performance and tensile strength before packing. Custom dimensions and painting are available to match client berth design.

Step-by-Step Installation Operation

1. Base preparation: Clean the mounting surface of vessel side or quay steel structure, remove rust, oil, welding slag. Ensure the base plane is flat and aligned with design elevation.

2. Positioning & marking: Align the DA fender pre-drilled holes with reserved bolt holes on the base. Do not force the fender to stretch or twist for alignment, which will introduce residual stress.

3. Pre-assembly: Pass anchor bolts through washers, backing plate and fender holes, then screw into the base.

4. Fastening: Tighten bolts diagonally and evenly in 2–3 stages to uniform torque, avoid over-tightening that crushes the rubber body.

5. Sealing & corrosion protection: Fill gaps with marine sealant; apply anti-corrosion paint on exposed bolt threads and steel parts.

6. Final inspection: Push the fender manually to confirm no abnormal offset, then record installation data for handover document.

Important note: Keep the fender away from long-term contact with strong solvent, heavy oil and open flame. Avoid sharp steel structures scraping the rubber surface during berthing.

Core Advantages for Marine & Vessel Application

1. Excellent energy absorption & low reaction force: The hollow arch structure absorbs berthing impact energy efficiently while keeping reaction force at a controlled level, protecting both the hull and the quay structure.

2. Compact arch shape, space-saving: Semi-circle profile fits neatly on vessel side, platform edge and narrow berth, suitable for service boats, work barges, davit platforms and small piers.

3. Outstanding seawater & weather resistance: Special rubber formula resists salt corrosion, ozone ageing and UV degradation, stable performance in tropical and offshore marine environment.

4. Simple installation & convenient replacement: Pre-drilled mounting holes, fewer fitting parts; damaged single fender can be replaced separately without dismantling the whole system, cutting downtime and maintenance cost.

5. Wide compatibility: Available for horizontal, vertical or diagonal mounting; compatible with steel hull, concrete quay and steel platform structure.

6. Cost-effective: Compared with cell fender and cone fender, DA arch fender has lower unit price and simpler supporting structure, ideal for auxiliary berth and ship-side protection.