BULB FLATS

BULB FLATS B

everly Bulbflats

Bulb Flats  Grade: A, B, A32, A36, D, D32, D36, Q345qC/D

Bulb Flats Sizes

Bulb flats for shipbuilding and bridges

Optimum plate-stiffening solution for shipbuilding and bridge building, bulb flat sections are used as high performance plate stiffeners in

different fields of applications, no other profile is more cost-effective, efficient and corrosion-resistant than the bulb flat.

Its shaping guarantees many advantages compared to other reinforcement techiques.

Cost and Weight Savings, Easy Maintenance and Inspection

Bulb flats are your project best partner as its high performance thus economical. These profiles have an excellent strength to weight ratio than

other forms of stiffener, and may allow your project weight saving more than 60%, on the other hand a low paint area with no need for edge

grinding prior to painting and require fewer lugs compared with alternative plate stiffeners.

In-service costs are also reduced for the life of the vessel or structure due to the rounded edges of bulb flats minimize paint degradation and their

shape prevents the build up of corrosive debris. They are also easy to access for inspection, cleaning and maintenance.

Enhanced Corrosion Protection

The rounded shape of bulb flats enables better coatings adherence, and provides inherent corrosion resistant features by

enhancing drainage, and minimizing dirt and moisture traps.

Quality Assurance

We offer approval bulb flats from all the major Ship Class societies such as :

• LR-Lloyds Register
• ABS-American Bureau of Shipping
• BV-Bureau Veritas
• DNV-Det Norske Veritas
• GL-Germanischer Lloyds
• NKK
• RINA
• CCS-China Classification Society

We are accredited to supply CE-marked material in accordance with the Construction Products Directive.

High-performance – lower weight

All bulb flats are individually specified for each project, ensuring they provide the precise shear capacity, structural performance and

buckling resistance to your project needs. The special shape of bulb flat profiles delivers an unrivalled strength-to-weight ratio,

giving you the desired buckling resistance at a lower weight than is possible with flat bars or structural angles.

Easy-maintenance design

The unique shape of bulb flats facilitates simple and efficient painting and welding, while also making maintenance and cleaning quicker

and more effective than with any alternative plate stiffener on the market. T-sections and structural angles both create blind corners and

hidden recesses that are difficult to clean effectively. Consequently bulb flats offer much better corrosion resistance and long-life performance.

Key Features

• The most economical reinforcement for plates.
• Excellent strength to weight ratio, weight saving more than 60%
• High performance
• Easy maintenance and inspection
• Clear advantages in the ratio of resistance to weight compared to other possible reinforcement elements such as e.g. angular steel, flat rolled steel or composite buckling stiffeners.
• The freely accessible, rounded surface prevents the trapping of moisture during coating, which can lead to undesirable corrosion.
• Acceptance inspections of the welding and coating are made easier due to the special shape.
• The optimized shape of this buckling stiffener makes it possible to reduce welding to a minimum during installation, particularly in the case of repair work or subsequent reinforcement measures.

Bridge building (Bridge construction)

bulb flats fulfill a range of application in bridges, such as stiffening of box girders and plate girders,

and stiffening of steel decks on small bridges`

The advantages that bulb flats offer assist both in the initial construction phase and throughout the working life of the bridge.

Recognition of the benefits which bulb flats provide is resulting in increased usage in bridges around the world, both large and small.

For bridge construction, grades are generally in accordance with EN 10025-2, with readily available yield strengths of 355N/mm² and 235N/mm².

However,  high yield strength steels to EN 10025-3/4 with yield strengths up to 420N/mm² are available by agreement for thicknesses up to 12 mm.