ISO17357 Submarine Fender Boat Pneumatic Rubber Fenders Hot Dip Galvanizing Accessories

Hot Dip Galvanizing Accessories Boat Rubber Fenders Manufacturer

Product Introduction

Boat rubber fenders are used world wide for ship-to-ship (STS) transfer operations, terminals, and for all kinds of ships.Such as VLCC, CONTAINER VESSEL, OFFSHORE SEAR TASK PLATFORM, LARGE SHIPYARD AND DOCK,LARGE SHIP AND CRUISE SHIP etc.

1. Boatrubber fenders shall consist of a cylindrical air bag with hemispherical heads at both ends, which shall be filled with compressed air. The basic body construction of this fender shall consist of an outer rubber, synthetic-tyre-cord layer (see Annex A) for reinforcement, and an inner rubber. All of these shall be vulcanized firmly.

2. The outer rubber shall protect the cord layers and inner rubber from abrasion and other external forces. This rubber compound shall have sufficient tensile and tear resistance strength to withstand anticipated weather conditions and severe usage. 

3. The inner rubber layer shall seal the air inside. 

4. The reinforcement synthetic-tyre-cord layers shall be strong enough to hold the internal pressure. In both compressed and non-compressed situations.

5. The flange opening shall be at either end, or both ends, for convenience of air charge and water filling for Type I and Type II. The flange opening shall be at only one end for Type I Single and no metal parts shall be at the other end to make that end safe from permanent deformation when it gets over compression.

6. The end of the reinforcement-cord layers shall enter the bead ring and be turned up outside the bead ring, which is built-in at the flange opening. Diameter of the bead ring or other steel material around the flange opening shall be less than 0,20 D (D: fender diameter) to make metal parts safe from permanent deformation when it gets over compression near to 80 %.  For Type I (Net-type) fenders, the bead ring, and turning up on construction can be excluded.

7. Fenders of diameter 2 500 mm and larger shall be equipped with a safety valve for releasing excess internal pressure when the fenders are over-compressed accidentally. Fenders which are smaller than 2 500 mm in diameter, can be equipped with a safety valve if required.

8. The fender shall be equipped with an air valve for inflation and checking air pressure.

Characteristic

●  External wear resistance      ●  Bearing pressure

●  Ageing resistance                 ●  Long service life

●  Good air tightness                ●  Easy storage

●  Non deformation                   ●  Simple installation

Specificaton of Boat Rubber Fender

Outer and Inner Rubber Material Requirements of Boat Rubber Fenders

Features of Boat Rubber Fender 

1. Safety and Reliability

Boat Rubber Fender are constructed of several layers of strong tire-cord, and are thus resistant to pressure and cutting. The safety factor adopted in the design of this fender is based on accepted theory and has been proven by extensive experimentation. large-size fenders are equipped with a safety valve to release the inside air in the event of accidental over-pressure.

2. No Deterioration or Variation in Performance

Boat Rubber Fender utilize the compressive elasticity of air, therefore performance deterioration due to fatigue is absent.

3. Advantages at Inclined Berthing

Boat Rubber Fender, energy absorption does not decrease at inclined compression up to 15 degrees.

4. Most Cost Competitive System

The utilization of the compressive elasticity of air provides completely uniform surface pressure on contact, making Boat Rubber Fender ideal. The surface pressure of the Boat Rubber Fender is equal to the internal air pressure. Due to low and uniform surface pressure properties, the Henger Pneumatic Rubber Fenders are popular at LNG-ship terminals.

5. Soft Reaction Force for Ship and Jetty Structure

The reaction force of Henger Pneumatic Rubber Fenders does not increase sharply, even under excess load conditions. Therefore, the Boat Rubber Fender perform well in such cases, and protect ships and mooring facilities.

6. Lower Mooring Forces under Rough Weather Conditions

The reaction force and deflection of Boat Rubber Fender do not easily reach the maximum because the reaction force increases slowly and allowable deflection is wide. Thus, the Henger Pneumatic Rubber Fenders safely protect ships and mooring facilities even under rough weather.

Notice Of Fender Application And Storage

1. The fender pressure should be kept in the standard pressure ,within the rate of ± 5% range.
2. Often check the pressure , when the pressure drops, Inflate the fender in time, so as not to affect the normal use of the fender.
3. When connecting the fender with a steel wire rope, the wire rope should be fitted with a rubber sleeve to avoid damage to the fender
4. Do not touch the fender surface with the the sharp objects , to prevent piercing the fender. If the fender's surface is damaged, it will affect the lifespan of the fender.
5. When the fender is in normal use, the fixing points should be firm, prevent the detachment and wash away the fender. Suspension of the rope and hook ring should be connected orderly , can’t be in a mess.
6. If the fender won’t be used in a long time , to clean the fender surface with fresh water, and place the fender in a dry, cool, ventilated place, without direct sunshine.
7. When the fender is stored for a long time, the pressure should be reduced and the fender should be placed far away from the heat source.
8. Because the fender is rubber product, should try to avoid the fireworks, not contact with acid, alkali, oil and other organic solution
9. When the fender is stored, it shall not be folded or stacked, and don’t stack other objects on the fender.