High Strength Bulb Flat Steel

High Strength Bulb Flat Steel

The cross-section of the spherical steel plate consists of a flat flange and a spherical head, forming an asymmetrical shape. The spherical head part provides additional support, while the flat part is convenient for connection and fixation. This unique design enables it to have excellent bending resistance and stability when bearing loads.
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Product Description

AdvantageDescription
✅ Lightweight Design10%~15% weight reduction compared to flat steel/angle steel at equivalent strength
✅ Superior Torsional ResistanceBulb head structure enhances lateral torsional capacity
✅ Excellent WeldabilityMeets shipbuilding PSPC welding standards with stable weld quality
✅ Corrosion Resistant TreatmentShot blasting + primer coating available for extended service life
✅ High Dimensional AccuracyHot-rolled process ensures parallel flanges and perpendicular web
✅ Full Size RangeComplete series coverage from 8# to 43#, with custom non-standard options available

Application Fields:

IndustryTypical Applications
🚢 ShipbuildingHull keels, ribs, stiffeners, frames, deck supports
🌉 Bridge EngineeringBridge girders, bearings, steel structure reinforcement
🏗️ ConstructionSteel structure frames, support members, stair railings
⚙️ Machinery ManufacturingLarge pressure vessels, equipment supports, wheel hubs
🚗 Automotive IndustryWheels, chassis frames, undercarriage components
🚂 Rail TransitVehicle underframes, track supports, railway turnouts


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