Semi-circular (D) rubber fender and Cylindrical rubber fender are commonly used ship fender materials, mainly used to protect the contact parts between ships and docks, docks and other structures.
As the name suggests, a semi-circular (D) rubber fender is shaped like a half-circle (or a "D"), with a flat back and a curved front. The fender is typically made from a durable and resilient rubber material that is able to absorb the impact of a collision and prevent damage to the boat or structure.
Semi-circular (D) rubber fenders are commonly used on docks and piers, where they are mounted horizontally along the length of the dock or pier to protect boats and other vessels as they approach and dock. They can also be used on other marine structures, such as bridge abutments or offshore platforms, to protect against impacts from passing ships and other vessels.
Their main differences are as follows:
1) Shape design: The section of the D-shaped rubber fender is semicircular, while the section of the cylindrical rubber fender is circular.
2) Compression resistance: Since the D-shaped rubber fender has multiple contact surfaces, it can disperse the pressure when absorbing the impact force, so its compression resistance is relatively strong; while the cylindrical rubber fender has relatively few contact surfaces, its resistance The pressure ability is weak.
3) Cushioning effect: The D-shaped rubber fender has relatively good cushioning effect, which can provide a larger contact area and smoother force transmission; while the cylindrical rubber fender has poor cushioning effect and is more prone to rebound.
4) Installation location: Due to the design characteristics of the D-shaped rubber fender, it is more suitable for installation on fixed structures such as docks and docks; while the cylindrical rubber fender is suitable for installation around the hull to protect the contact between the ship and port facilities.