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QINGDAO DOOWIN MARINE ENGINEERING CO., LTD.
Professional Manufacturer of Marine Rubber Airbags, Yokohama Type Fenders and Offshore Foam Buoys
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0.08g/cm3-0.7g/cm3 Subsea Buoyancy Modules Manufacturers Lightweight

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0.08g/cm3-0.7g/cm3 Subsea Buoyancy Modules Manufacturers Lightweight

Brand Name : DOOWIN MARINE

Model Number : STY

Certification : ABS,CCS,BV,LR

Place of Origin : China

MOQ : 1pc

Price : 100~ 3590 $USD

Payment Terms : T/T

Supply Ability : 10pcs/per week

Delivery Time : 2~3 weeks

Packaging Details : Pallet or Plywooden Box

Product Name : Subsea Buoyancy Modules

Material : Syntactic foam, Chemical foam

Service : Support OEM/OEM service

Density range : 0.08-0.7g/cm3 ,provides exceptional lifting capacity

Long Service Life‌ : 20+ year lifespan with minimal annual buoyancy loss (<0.1%)

Water absorption rate : Not more than 1% (or 5%)

Submersible Depth : 0 ~ 11,000 meters underwater

Shape design : According to different customer needs

Skin : Elastomer PU skin

Color : Yellow,Orange, or customized

Specification : As Client Requested

Application : Buoyancy solutions for every application

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Customized High Pressure Resistance deep-sea mining Buoyancy Modules Underwater Gliders‌ CNC Precision Solution Buoy Systems
High-density, low water absorption floats designed for demanding subsea environments. Most products are custom manufactured to meet specific project requirements.
0.08g/cm3-0.7g/cm3 Subsea Buoyancy Modules Manufacturers Lightweight
Subsea Buoyancy Syntactic Foam
Subsea solid buoyancy material (syntactic foam) is a lightweight composite formed by embedding hollow microspheres in polymer matrices. These materials feature:
  • Low density (0.35-0.7g/cm³)
  • High strength (1-100MPa)
  • Minimal water absorption (<2%)
  • Excellent corrosion resistance
Engineered for Extreme Deep-Sea Environments
0.08g/cm3-0.7g/cm3 Subsea Buoyancy Modules Manufacturers Lightweight
Our high-performance syntactic foams are specifically designed for deep-sea applications, offering:
  • Lightweight construction
  • Exceptional strength-to-weight ratio
  • Superior corrosion resistance
  • Ultra-high pressure resistance (withstands depths exceeding 10,000 meters)
These subsea buoyancy composites are typically fabricated by lightweight fillers like hollow glass microspheres to reduce density, often combining reinforcing fibers (e.g., carbon fiber, glass fiber) with polymer matrices (e.g., polyurethane, epoxy resin).
Applications
Our buoyancy modules are widely used in:
  • Manned submersibles
  • ROV/AUV buoyancy systems
  • Subsea oil and gas pipelines
  • Deep-sea mining equipment
By reducing structural weight while enhancing durability, our syntactic foams extend equipment lifespans and improve energy efficiency in marine operations.
Subsea Buoyancy Foam Specifications
Density and strength can be customized to meet specific water depth requirements.
Type Model Density (g/cm³) Compression Strength (MPa) Water Absorption (24h) Submersible Depth (m)
Chemical Foam CSBM-08 0.08 / ≤5% Surface
Chemical Foam CSBM-020 0.20 0.5 ≤5% 50
Chemical Foam CSBM-025 0.25 1 ≤5% 100
Chemical Foam CSBM-030 0.30 2 ≤5% 200
Standard Performance SBM-36 0.36 ± 0.01 ≥ 16 ≤1% 500
Standard Performance SBM-38 0.38 ± 0.01 ≥ 21 ≤1% 800
Standard Performance SBM-43 0.43 ± 0.02 ≥ 24 ≤1% 1,000
Standard Performance SBM-45 0.45 ± 0.02 ≥ 28 ≤1% 1,500
Standard Performance SBM-51 0.51 ± 0.02 ≥ 45 ≤1% 3,000
Standard Performance SBM-54 0.54 ± 0.02 ≥ 60 ≤1% 4,000
Standard Performance SBM-58 0.58 ± 0.02 ≥ 75 ≤1% 5,000
Standard Performance SBM-63 0.63 ± 0.02 ≥ 90 ≤1% 6,000
Standard Performance SBM-70 0.70 ± 0.02 ≥ 145 ≤1% 11,000
High Performance SBM-43H 0.42 ± 0.02 ≥ 27 ≤1% 1,800
High Performance SBM-45H 0.45 ± 0.02 ≥ 35 ≤1% 2,000
High Performance SBM-48H 0.48 ± 0.02 ≥ 42 ≤1% 3,000
Precision Manufacturing Process
0.08g/cm3-0.7g/cm3 Subsea Buoyancy Modules Manufacturers Lightweight


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0.08g/cm3-0.7g/cm3 Subsea Buoyancy Modules Manufacturers Lightweight

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