DooFlex, a division of DOOWIN Rubber & Plastic Co., Ltd,provides underwater lift bags, salvage tubes and proof load testingwater bags for the offshore industry. DooFlex is China's leadingdesigner and manufacturer of products made from heavy-duty PVC orTPU-coated fabric. DooFlex's products pass a rigorous ISO9001quality management system. With a strong reputation for quality,DooFlex is considered the first choice supplier by many keyindustry suppliers, contractors and end users. Heavy-dutyunderwater air lift bags Heavy-duty air inflated underwater airlift bags products are used worldwide for raising sunken objects,vessel salvage, marine structure stabilisation, underwaterequipment transport, pipeline and equipment towing, and standbyemergency buoyancy. All DooFlex air lift bags are manufactured tocomply with IMCA D016 guidelines. Totally enclosed air lift bagsTotally enclosed air lift bags (salvage tube, inflatable buoyancybags) are an effective alternative to open-bottom parachute-typelifting bags for the surface buoyancy support operation as one kindpontoon. Totally enclosed air lift bags can be used for buoyancysupport and re-floatation operation in shallow water and on thesurface, support / salvage pontoons for bridges, floatingplatforms, dock gates, sunken objects or military equipment.Totally enclosed lifting bags offer an effectual method of reducingthe draught of vessel and floating underwater structures. They alsoprovide an ideal system of buoyancy for cable and static buoyancysupport. The lifting bags are cylindrical-shaped units, fabricatedfrom heavy-duty polyester cloth coated with PVC, completelyequipped with appropriate quantity of automatic air relief valves,certified heavy-duty polyester webbing with shackles, and air inletstainless / brass ball valves. The overall assembly has a minimum6:1 safety factor for its working load. Open-bottom air lift bagsDooFlex open-bottom air lift bags are designed with parachuteshaped units, which are widely used for buoyancy support or liftingsunken objects operation of underwater diving work. The open-bottomdesign makes the operation safer. It's a one kind of floatationdevice for diving and underwater marine salvage, and underwaterbuoyancy support and re-floatation. DooFlex open-bottomparachute-type lift bags are fabricated from high tenacityPVC-coated polyester fabric. Each open-bottom air lift bag isequipped with manual air dump relief / dump valve, which can becontrolled easily to change the buoyancy by the bottom rope.Certificated heavy-duty polyester webbing with end shackles, andair inlet stainless / brass ball valves are equipped for thelifting operation. Each parachute lifting bag is fold compactly foreasy carrying and storage. It is complete and ready for use whenleaving our manufacturing facility. Proof load testing water-filledweight bags DooFlex proof load testing water-filled weight bags arespecially designed as a simple, safe and cost-effective proof loadtesting solution for lifting equipment and structures, whether forstatic or dynamic load testing of davits, winches, cranes, liftingequipment, beam and wire falls, in both marine and industrialsectors. All water weight bags are made of high tenacity PVC-coatedpolyester fabric using radio frequency welding technology. Eachwater bag equipped with certificated shackles, master-link, webbingstraps. The overall assembly has a minimum 6:1 safety factor forits working load. Each water weight bag is tested and certifiedbefore delivery. And crane test water weight bags got the CCS'Certificate of Type Approval'. In addition, we also can providethird-party certificate from BV, ABS, SGS and others. Lifeboattesting water bags DooFlex lifeboat testing water bags are designedwith a bolster cylindrical shape, made of heavy-duty PVC-coatedfabric, and equipped with fill / discharge fittings, handles and anautomatic relief valve, which is activated once the water bagsachieve the designed weight. Because of the lifeboat testing waterbags' economy, convenience and high efficiency advantages, thissystem is widely used for the distributed proof load testing oflifeboats and any other equipment that needs distributed proof loadtesting, such as crew bastes, gangways, small bridges, and so on.Enclosed pillow air lift bags DooFlex enclosed pillow air lift bagsare versatile with a totally enclosed pillow type. The pillow typeair lifting bags can be used in shallow water with a maximum liftcapacity for re-floatation work and towing jobs. Enclosed pillowtype air lift bags are manufactured from high-strength PVC-coatedfabric, which is highly abrasion and UV resistant. Each enclosedpillow air lift bag is equipped with a heavy-duty webbing harnesswith single pick points and screw pin shackle, over-pressurevalves, stainless-steel ball valves and quick disconnects. Customsizes and rigging options are available on request. Inflatablebuoyancy bags DooFlex elongated inflatable buoyancy bags / pontoonair lifting bags are manufactured using high-quality PVC-coatedfabric, equipped with a heavy-duty webbing harness with single pickpoints and screw pin shackle, over-pressure valves, stainless-steelball valves and quick disconnects. Custom sizes and rigging optionsare available on request. Elongated inflatable buoyancy bags arewidely used as salvage tube/ salvage pontoon for the supportingdocks and other floating structures, and it also excellent for thepipe-laying and shipwreck salvage, re-floatation projects.
