Installation Subsea Buoyancy Modules Umbilical Buoyancy Solutions
Surface And Subsurface Buoys
High-density, low water absorption floats designed for demanding
subsea environments. Most products are custom manufactured to meet
specific project requirements.

Subsea Buoyancy Syntactic Foam
Subsea solid buoyancy material (syntactic foam) is a lightweight
composite formed by embedding hollow microspheres in polymer
matrices.
- Low density (0.35-0.7g/cm³)
- High strength (1-100MPa)
- Minimal water absorption (<2%)
- Excellent corrosion resistance
Engineered for Extreme Deep-Sea Environments

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

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