Bulb flats are the plate stiffener of choice for the shipbuilding industry, due primarily to their excellent strength to weight ratio and the fact that 

The Bulb flat is a hot laminated steel product with a bulb in one or both of its edges. We produce bulb flats according to the 3.1.

Because of the rounded edges, Bulb Flats are excellent stiffeners with a longer life span compared to angles in terms of corrosion-resistance and maintenance in ship, barge, and bridge construction. We supply bulb flats in a full -wide range of steel types and grades.

This paper describes fatigue tests at stiffener end connections with bulb flats and angle bars and focuses on the question how far bulb flats are also prone to fatigue in view of the reduced

Because of the rounded edges, Bulb Flats are excellent stiffeners with a longer life span compared to angles in terms of corrosion-resistance and 

Bulb flats are being used as plate stiffeners especially in the shipbuilding industry. Our supply width ranges from 60mm to 430mm, and can be supplied according to main shipbuilding rules. We use cookies to ensure that our site works correctly and to provide you with a better experience.

4 Ordinary stiffeners 4.1 Stiffeners not perpendicular to the attached plating Where the angle between the section web and the attached plating is less than 70°, the actual section modulus may be obtained [cm3] from the following formula: w=w 0·sin α w0 = actual section modulus [cm 3] of the stiffener assumed to be perpendicular to the plating

Bi-directional Stiffener Welder • Welds flat, angle, tee, and bulb type stiffener configurations. • Fillets up to 5/16 inch (8 mm). • Weld speeds up to 70 IPM (1778 mm). • Achieve high quality, uniform, continuous or intermittent welds on both sides of the stiffeners simultaneously. • The machine can be equipped with various weld

Stiffener End Details - Family No. 11 Panel Stiffener Details - Family No. 12 Summary of Ships Surveyed Revised Classification of Details Sample Calculation: Built-Up Beam Bracket in Way of Bulkhead Stiffener Fabrication Time Versus Size of Members Sample Calculation: Plate Corner Bracket Sample Calculation: Non-Tight Collar 3-13 3-15 3-17 3-18

Bulb flats are tailor made for plate stiffening applications. Their special shape provides significant benefits compared with other types of stiffener.

An improved composite stiffener and methods and tooling used to form the same. The stiffener includes one or more base flanges, a composite rod extending in an axial direction, a bulb cap surrounding the composite rod, and an upright web extending from the one or more base flanges to the base cap. The upright web includes a non-linear profile in the axial direction providing the improved

b (mm) 5 6 7 8 60 3.41 80 4.41 5.06 5.72 100 6.32 7.13 7.96

PDF | Stiffener end connections, particularly at side longitudinals, belong to fatigue critical details of ship structures.

The subject of this research is the buckling behavior of a rectangular plate, with a bulb flat stiffener attached to one side of the plate. The stiffener cross section has a thin web and a bulb

Stiffener End Details - Family No. 11 Panel Stiffener Details - Family No. 12 Summary of Ships Surveyed Revised Classification of Details Sample Calculation: Built-Up Beam Bracket in Way of Bulkhead Stiffener Fabrication Time Versus Size of Members Sample Calculation: Plate Corner Bracket Sample Calculation: Non-Tight Collar 3-13 3-15 3-17 3-18

Bulb flats are the most cost-effective, efficient and corrosion-resistant solution for plate stiffening requirements. Key advantages include an excellent 

BP (Bulb plates). ○ ABS (Unequal leg angles). ○ AB (Equal leg angles). ○ CB (Channel beams). ○ FB (Flat bars). Shape and dimensional tolerances. Package.

Ship Building Steel section. Bulb bars/flats are asymmetrical plate stiffeners used for ship building hull construction (Ship Hull, Ballast Tanks, and Cargo Holds) & Bridges (Box & Plate Girder, Steel Decks, and Expansion Joints). These special profiles provide a wide range of benefits compared to conventional plate stiffeners used for the purpose.

An improved composite stiffener and methods and tooling used to form the same. The stiffener includes one or more base flanges, a composite rod extending in an axial direction, a bulb cap

Firstly, in terms of plate stiffening, bulb flat bars are a great solution for plate stiffening. Bulb flats provide a low paint area, with no need for edge grinding prior to painting and require fewer lugs compared with alternative plate stiffeners.

Bulb flats are the most cost-effective, efficient and corrosion-resistant solution for plate stiffening requirements. Key advantages include an excellent strength to weight ratio delivering buckling