Strauhs | Tecnologia em Equipamentos

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Mooring Bollards

Quality:

Rigorous tests are standard at every stage of our manufacturing process, in order to ensure the performance and life cycle of the products. We typically deliver the following quality documents, or others as required by the customer.

Dimensional drawings of bollards and anchors
Calculations of bollards and anchors
Chemical analyses of materials
Mechanical test reports
Non-destructive test reports such as liquid penetrant, magnetic particles, and ultrasound.
Painting reports

Materials:

The main materials used by Strauhs for the manufacture of bollards are Ductile Iron(SG) and Cast Steel, each with its own characteristics. We do not recommend gray cast steel due to its inferior characteristics.

Ductile Cast Iron (SG):

Ductile Cast Iron (SG) has better corrosion resistance and cost per weight, while cast steel offers greater impact resistance. SG iron is the most popular choice and is most suitable for hot climates. They have better wear resistance and handle surface damage better. In addition to a longer lifespan thanks to its corrosion resistance.

Cast Steel:

Cast steel has higher mechanical strength, in addition to greater resistance to wear and impact. The cost per weight is higher. Its corrosion resistance is inferior to Ductile Cast Iron, which can lead to a greater need for maintenance in order to ensure a long lifespan. Minor repairs can be carried out by properly qualified welders. It is more suitable for cold climates.

Selection of Bollards:

The selection of the appropriate bollard depends on various factors, including the dimensions and displacement of the vessel, port configuration, winds, tides, local weather, water depth, etc. The selection is typically the responsibility of the port designers after careful analysis.

Anchor Bolts:

The specifications of the anchors are stated in the provided drawings. The dimensions and materials used are calculated and suitable for each application. The anchors are typically supplied hot-dip galvanized, as well as the nuts and washers.

The type and length of the anchors depend on the structure of the cradle itself. For new concrete cradles, bolts cast in concrete are preferably used. In cases of bollard replacement, it is recommended to use bolts fixed with chemical adhesives. The bollards can also be installed using through bolts. However, this definition should come from the cradle designers.

Painting:

The bollards are supplied with high-quality epoxy paint according to the Strauhs standard. Other painting plans can be applied as required by the customer.