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marine mooring offshore buoy
Construction Features:
--Core
The core is manufactured by batching up the resilient closed cell polyethylene or EVA foam and uniformly and continuously thermolaminating each layer together. The method ensures a bond stronger than the foam itself and eliminates the use of adhesives which can break down under long use. Useing of a polyethylene foam core ensure the buoy will not absorb water even if the skin is punctured, increasing the lifespan of the product and reducing maintenance costs. The resilient material makes the buys self fendering with a high impact absorption capacity.
--Skin
The core is encapsulated with a skin of high performance polyurethane elastomer, spray applied. Polyurethane elastomer is selected for the skin because of its high resistance to abrasion, fatigue and ultra violet degradation and is significantly more durable than polyethylene materials used in the construction of rotationally moulded buoys.
--Steelwok and end assembly
Comprising through central steel tube with longitudinal gussets and external load distribution flanges at each end. A swivel assembly, certified 10 tonnes SWL, with bows at each end passes through the central tube.
All the material of swivel assembly are hot dip galvanized. Steelwork to be coal tar epoxy painted.
Material:
Swivel assembly: bows to BS970
Gusets, flanges carbon steel to BS EN10025 Fe 430 A or B
Central tube to BS 6323 Pt 3 HFS 5
Finish:
Swivel assembly hot dip galvanized to BS 729 Zn2/Zn4 at 610 g/m2
Steelwok to be coal tar epoxy painted
Skin Colour:
Orange, Yellow and others
Subsea Buoyancy
Buoyancy material used for subsea is up to 7000m.
Product of different opplications buoyancys are manufactured upon our advance subsea buoyancy material. We can make subsurface mooring buoys , cable float, pipeline buoys, ROV buoyancy module , special buoys, and other synmatic foam products.
Our high-performance subsea buoyancy material and synmatic foam have the following performance.
Item |
Unit |
Value |
|||
500m |
1000m |
1500m |
4500m |
||
Density |
g/cm³ |
≤0.4 |
≤0.45 |
≤0.5 |
≤0.6 |
Compressive Strength |
MPa |
≥5 |
≥10 |
≥15 |
≥40 |
Hydrostatic Pressure |
MPa |
≥5 |
≥10 |
≥15 |
≥37 |
Water Absorption |
% |
≤2(5MPa,24h) |
≤2(10MPa,24h) |
≤2(15MPa,24h) |
≤2(40MPa,24h) |
Advantage of buoys
1,Advanced framework design .
2.Over 20 year's expriences in marine buoys, more improvements are reflected in production.
3.Durable practical.
4.More flexible,easy installation.
5.Safety and reliability.
6.Economical, Good after service.
7.Variety of end fitting to choose
8.Good technical supports
9.Abrasion resistant tough skin
Surface support buoys are entensively used in single point mooring (SPM) system. The three main type are as below:
- Cylindrical Buoys.
- Chain thought Buoys.
- Pick-up Buoys.
Marine Foam Buoys are manufactured from a polyethylene or EVA thermo-laminated foam core encapsulated within self-colored polyurethane out skin. Used extensively in single point mooring (SPM) systems, the three main types of support buoy are: Cylindrical Buoys, Chain-Throught Buoys, Pick-Up Buoys.
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