Pipeline buoyancy units are made of rubber. The airbags are the system of choice where reliable, controllable buoyancy is required. They are particularly suited for installation buoyancy on pipeline float-out, beach pulls, and river crossings.
The buoyancy airbags are enclosed cylindrical shape buoyancy units. Constructed from high tensile out rubber layer, multiplayer heavy-duty synthetic-tire-cord layers, and an inner rubber layer vulcanized firmly. There are some lifting belts and shackles around the airbags. Safe valves, mounted to the ends of airbags, are ideal for releasing inner pressure automatically when marine salvage airbags are applied in deep water.
Pipeline rubber airbags are cylindrical balloon bodies, with two conical heads and an end mouth, fitted with air tightness swivel and air inlet kits at the end mouth. Polyester webbing lifting straps are around the whole marine rubber airbag body. The total lifting of these straps maintains a minimum 6:1 safety factor of its buoyancy. Can equip the auto pressure to relieve valves, which can open when inner pressure reaches rated pressure. It is tougher than PVC underwater air lift bags.