Qingdao Ronsen Marine Supplies Co., Ltd is a china manufacturer, provider of marine fenders system, ship launching & dry docking system with rubber marine airbags, offshore & subsea foam buoyancy systems, we are using our learning knowledge, experience serving global ports, oil & gas, construction fields and marine, shipyards industries. We now offer following segments of products, service.
International Marine Fendering
Our marine fender system is composed of marine rubber fenders and floating fenders. They are produced, guaranteed upon requirements of international standard pianc 2002 and existing necessary testing equipments. Common marine rubber fenders include cylindrical rubber fenders, cone rubber fenders, cell rubber fenders, extruded rubber fenders, arch rubber fenders, D rubber fenders, tugboat marine fenders, I rubber fenders, roller rubber fenderes and floating fenders like yokohama type pneumatic marine rubber fenders, foam filled marine fenders etc. Marine fenders are extensively applied for berth, O&G terminals, installed for new ports construction and old wharfs renovation. Our company are one of the leading manufacturers of ports fenders in China, committed to provide one stop marine solutions for clients, supplying fenders, chains, uhmw-pe facing pads, frontal panels and mooring bolts etc. Our marine rubber fenders are type approval certified by CCS. We manufacture fenders in standard performance and high energy absorption as well super high energy absorption. Fenders can be customized with required rubber formula. Within many years of production experience, we have acquired recognization from many well-known clients abroad, successfully achieved supply of large projects.
Featured Marine Airbags
Airbags is designed with cylindrical body and two conical heads, made of synthetic tire cord reinforcement layers to launch a vessel. The airbag are smooth, glossy and without blemish such as crack, blister, delamination, pits or impurities. An air bag is composed of effective length, diameter and number of layers. The standard diameter include 0.8m, 1.0m, 1.2m, 1.5m, 1.8m, 2.0m, 2.5m with effective length 5m to 24m. Typical layer of airbag is 6, available 5~10 layers. Each layer say each bearing capacity. Performance of airbag produced in holistic enlacing technology are superior to common airbags. Safety coefficient of each airbag is higher than ISO 14409, can reach to 5. We produce good performance in strength marine airbags used for ship launching and docking. Marine airbags are inspected as per ISO 14409, with higher safety ensurance, manufactured in high endurance enlacing production technology, come with better bearing capacity. Such as airbag D1.8m, 6 layers, with safety working pressure 0.13 Mpa, can be deformed to 70%, with biggest bearing capacity 218KN/M, bursted at 330 kPa. We pioneer in airbag bursting experiments and advanced in rubber raw material seclection and inspection, satisfying hardness, tearing strength, tensile strength, ozone aging etc. We riched in launching, docking projects with airbags and supplying big quantity. And we are the first in China to own our engineering team, providing designing, guidlines for vessels’ launching and dry docking. Marine airbags can be used for heavy lifting, this require a higher pressure than common bag. We improve our production technology and do some of these projects and airbag perform well. Salvage airbags are more suitable for heavy projects like ships salvage floatation.
ISO 17357 Standard Pneumatic Rubber Fenders
Floating pneumatic rubber fenders is made of synthetic-cord-reinforced rubber sheet with compressed air inside to enable it to float on the water and work as a shock absorber between two ships, or between ships and berthing structures when they come alongside each other on the water. “Pneumatic rubber fenders” have sometimes been colloquially referred to as”Yokohama fenders” or “Yokohama type fenders”. These are examples of suitable products available commercially. An pneumatic rubber fender is consisted of a cylindrical air bag with hemispherical heads at both ends, filled with compressed air. Basic body constructioned of an outer rubber, inner rubber, synthetic-tyre-cord reinforcement layer, sealed by bead ring and flange opening. Pneumatic fenders are defined as net type and sling type with initial pressure 50kPa or 80kPa. Net type pneumatic fenders shall be covered by a chain net, wire net or fibre net. Whichever type of pneumatic fender, there is an initial pressure, endurable pressure, safety-valve setting pressure and hydraulic test pressure required, coming with a performance specified in terms of guaranteed energy absorption and reaction force at Gea deflection. We do most of tests and inspections for commercial fenders including: rubber material tests; dimension inspection, airleakage tests; hydrostatic-pressure test etc. Standard sizes of our standard pneumatic fenders range from 0.5 m~4.5m, with body length from 1.0m~12.0m. We are the pioneer in China to manufacture fenders in 4.5m, the leading supplier to provide fenders complying with ISO 17357, proceeding full sets of tests like compression tests, airleakage tests etc. Our pneumatic fenders are shipped in deflated status, saving transporting charges for clients.
Guard & Cushion Foam Filled Marine Fenders
Foam filled fenders are type floating fenders installed aside of ship for berth. They have double performance of same sized pneumatic rubber fenders, with increasing weights, unsinkable, higher energy absorption and lower reaction force. foam filled marine fenders are constructed of closed cell EVA/PE foam core, reinforced by nylon layer, coated with pure polyurea elastomer skin. foam fenders is low maintenance and good standoff distance. The colored Pu skin could be grey navy, orange and black, providing awareness for other objects. Our company is the leading manufacturer of foam fenders in China, we produce guard netless type, cushion netted and shipboard fenders in either pu or rubber skin.
Sea Surface Subsea Buoyancy
Our company are the leader and specialized manufacturer in China to provide offshore and subsea foam buoyancy material, foam floaters for pipelines. Our floating foam buoys like pick up buoys, cylindrical buoys, chain through buoys and mooring anchor pendant buoys, all are called general buoys, they are widely applied for mooring marines ships etc. Foam buoys are produced in closed cell eva pe foam core, reinforced by nylon layer and coated with polyurethane elastomer skin. they are self-floating, uv-resistance, collision resistant, provide good protection and warnings for the marines.