• Quality IMCA Standard PVC Material Salvage Balloon Open Bottom Parachute Underwater Lifting Bags factory

    IMCA Standard PVC Material Salvage Balloon Open Bottom Parachute Underwater Lifting Bags

    IMCA-certified PVC underwater lifting bags (100kg-50T) with 5:1 safety factor. HF-welded seams, high-flow dump valves, and CCS certification ensure reliable marine salvage operations. OEM available.

  • Quality CCS Certificated Shallow Water Marine Salvage Enclosed Pillow Shape Underwater Air Lifting Bags factory

    CCS Certificated Shallow Water Marine Salvage Enclosed Pillow Shape Underwater Air Lifting Bags

    CCS-certified pillow shape underwater air lifting bags with 5:1 safety factor (IMCA D016). Made from heavy-duty PVC coated fabric, featuring auto pressure relief valves. Custom colors & OEM available. Ideal for marine salvage, towing, and underwater construction.

  • Quality Parachute Type Underwater Air Lift Bags Customized 250kg - 100ton Capacity factory

    Parachute Type Underwater Air Lift Bags Customized 250kg - 100ton Capacity

    DOOWIN Parachute Type Underwater Air Lift Bags offer safe, efficient lifting from seabed to surface, compliant with IMCA D-016 standards. Featuring a 5:1 safety factor, 7:1 WLL strops, and dump valves for stability, these durable bags (250kg-100ton capacity) are HF-welded for harsh environments. Custom or standard options available, with rigorous testing including drop tests for reliability. Ideal for subsea operations with poor visibility or strong currents.

  • Quality Totally Enclosed IBUs Inflatable Buoyancy Units For Marine Salvage factory

    Totally Enclosed IBUs Inflatable Buoyancy Units For Marine Salvage

    DOOWIN's Totally Enclosed Inflatable Buoyancy Units offer reliable marine salvage solutions with 5:1 safety factor and IMCA D-016 compliance. Featuring auto-pressure release valves, HF welding, and UV-stabilized PVC coating, these lightweight units provide precise buoyancy control for pipeline float-outs and vessel draft reduction. Compact, lightweight design enables easy handling with global deployment success.

  • Quality HF Welding IBUs Inflatable Buoyancy Units For Pipeline Laying / Hose Laying factory

    HF Welding IBUs Inflatable Buoyancy Units For Pipeline Laying / Hose Laying

    DOOWIN's Totally Enclosed Inflatable Buoyancy Units (IBUs) provide reliable buoyancy for pipeline laying, featuring a 5:1 safety factor, auto pressure release valves, and HF welding. Ideal for shallow waters, they offer real-time buoyancy adjustment, towing capability up to 2 knots, and efficient shipping (500 tons fits in a 20-ft container). Compliant with IMCA D-016 standards.

  • Quality Single Point Mono Buoyancy Units MBU Type For Pipeline Laying factory

    Single Point Mono Buoyancy Units MBU Type For Pipeline Laying

    Single Point Mono Buoyancy Units (MBUs) offer 500kg-10ton lift capacity for pipeline laying & salvage operations. BV/CCS-certified with 5:1 safety factor, RF-welded seams, and auto pressure relief valves. Compact, lightweight design (45kg for 5t unit) enables rapid deployment. Complies with IMCA D-016 standards for superior cost efficiency and safety.

  • Quality Enclosed Underwater Pillow Lift Bag 250kg-5000kg Buoyancy Capacity With Scuba Tank Pocket factory

    Enclosed Underwater Pillow Lift Bag 250kg-5000kg Buoyancy Capacity With Scuba Tank Pocket

    Enclosed Pillow Lift Bags with SCUBA Tank Pocket offer versatile buoyancy (250-5000kg) for marine salvage. Military-grade PVC coating, reinforced webbing, and stainless steel valves ensure durability. Ideal for vessel recovery, underwater construction, and aircraft retrieval with multi-position deployment.

  • Quality Yellow Red Elongated Float Bags High Strength For Underwater Air Lift factory

    Yellow Red Elongated Float Bags High Strength For Underwater Air Lift

    DOOWIN's Elongated Float Bags provide reliable buoyancy for marine salvage & rescue. Made from heavy-duty PVC-coated polyester (SGS-certified) with automatic relief valves & 5:1 safety factor (IMCA D016 compliant). Low-diameter design suits shallow water. Available in multiple sizes (500–5000 kg lift capacity).

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