With the development of China's shipping industry, there is more and more demand for dock and Marine fender, and the demand for fender performance is also higher and higher. Among them, rubber fender is the most widely used because of its good toughness and impact resistance. At present, many rubber fender manufacturers in China, the products are uneven, some manufacturers in order to survive in the fierce market competition, one-sided low-cost competition as the main means, do not strictly abide by the relevant standards and processes, the use of low-quality raw materials or excessive use of recycled rubber to reduce costs, which brings great hidden dangers to the safety of docks and ships. Relevant experts said that rubber fender manufacturers should strictly implement the relevant national standards, strict technological processes, enhance independent innovation capabilities, and constantly improve product quality to provide reliable and safe products for China's shipping industry and shipbuilding industry.

It is understood that there are many types of rubber fenders on the market at present, mainly compression type, inflatable type, lateral load cylindrical type (drum type), butt V type (that is, X type) and flexible pile type. In the design and production of rubber fender, manufacturers should consider the reaction force acting on the hull and dock docking members, the size of the deformation after the fender absorbs the kinetic energy of the ship, the reaction force acting on the hull due to the deformation of the fender, the relative stiffness of the fender, the effectiveness of the energy absorption of the fender during non-forward crowding, the rate at which the fender slows down the berthing speed of the ship, the friction coefficient between the fender system and the hull, the fender system and the support There are many factors such as the infrastructure investment and maintenance cost of the support members, the contact mode between the hull and the fender, etc. Users can choose different types of rubber fenders according to the actual, in addition to tugboats, small ships, large tonnage ships are generally not equipped with rubber fenders, berthing mainly uses inflatable rubber fenders to protect the dock and hull.

Relative to the shipbuilding industry's Marine main engine, ship plate and other supporting markets, the market capacity of rubber fender is not very large, and the competition is very fierce. Li Haie, deputy general manager of Shandong Rsea Ship Engineering Co., Ltd., said that the domestic annual market capacity of rubber fender is more than 2 billion yuan, and the well-known manufacturers are 3 or 4, which are mainly for the backbone ports and shipbuilding enterprises, customized products are more, so the market share is high and the efficiency is better. And some producers with more general products and thin profits can only adopt a low-cost competitive strategy, and even use low-quality materials or a high proportion of recycled rubber to seek to reduce costs, which is more common in Jiangsu, where a rubber fender manufacturers gather more. Li Haie pointed out that the low-quality rubber fender is very harmful, not only the service life is short, but also once damaged will bring serious damage to the dock and berthing ships.

Song Baoqing, secretary general of the rubber and rubber Products Sub-Technical Committee of the National Rubber and rubber Products Standardization Technical Committee, responsible for the revision of China's rubber fender standards and technical centralized management, also has the same feeling. At present, the standards used in China's solid rubber fender are "GB/T 21537-2008 conical rubber fender" and "HG/T 2866-2003 rubber fender". Inflatable rubber fenders are used in "CB-T 3948 Marine inflatable rubber ball" and ISO17357:2002 "High pressure Floating pneumatic rubber fenders", and the filled floating rubber fenders are new products that have appeared in recent years. There is no international standard or industry standard. Song Baoqing pointed out that China's various rubber fender standards are not backward compared with foreign countries, but the uneven implementation of standards by manufacturers makes the products uneven, which brings hidden dangers to the development of China's shipping industry and shipbuilding industry. She said that the addition of recycled rubber in raw materials can better improve the processing performance, and meet the requirements of green environmental protection, as for how much recycled rubber will have an adverse impact on product quality and service life, there is no quantitative analysis data, so the use of recycled rubber can not be simply denied. However, the use of high-quality raw materials is an important basis for ensuring product quality, which is beyond doubt.

Rubber fender is mainly used as safety protection for ship outfitting in shipbuilding enterprises. Shandong Rsea Ship Engineering Co., Ltd. relevant people said that the quality of the product is the first. If the new ship in the dock outfitting due to rubber fender quality problems and collision accidents, resulting in hull damage, the new ship will have to rework repair or even cause delay. Although compared with the port, rubber fender does not belong to the main production facilities of shipbuilding enterprises, the shipyard also pays more attention to the cost performance of rubber fender, but the product quality must not be ignored.

To standard foreign advanced enterprises, strictly implement standards, and strengthen the ability of independent innovation of enterprises is the only way to standardize and sustainable development of rubber fender industry. Experts said that China's rubber fender manufacturers should closely follow the development trend of foreign intelligent fender technology, take the initiative to benchmark and adopt foreign advanced standards, enhance independent innovation capabilities, constantly improve product performance, and strive to achieve continuous product upgrading. At the same time, we should self-discipline and self-improvement, focus on reducing costs and improving product quality, and do not engage in vicious competition at low prices. In addition, under the framework of complying with the relevant agreements and provisions of the World Trade Organization, China should increase the revision and implementation of the rubber ship standard system, increase the publicity of the importance of rubber fender quality to the safety of wharfs and ships, standardize the market order, and make it difficult to produce low-quality rubber fender and have no market.