Mild Steel Bulb Flats

Mild Steel Bulb Flats


Mild steel bulb flat, also known as mild steel bulb plate, is a hot-rolled piece of steel with a protruding stem at the end. Bulb plates are the plate stiffener of choice in the shipbuilding industry due to their excellent strength to weight ratio. The bulb flats’ unique feature, a short-tapered flange on one side, provides for more accessible cleaning and welding. The shape of the bulb flat also prevents any hidden recesses when reinforcing plate with other structure profiles. Mild steel bulb flats are economical, efficient and corrosion resistant solution for shipbuilding projects.


Uses of mild steel bulb flats include shipbuilding, marine, engineering, fabrication, oil and gas, nuclear power, energy, bridges and structural applications.


Two of the common grades of mild steel bulb flats or bulb plates are AH36 and ABS Grade A. AH36 is a popular mild steel grade utilized in various marine engineering and structural applications. AH36 is a high strength structural steel grade, widely used in high stress areas of ships as the grade provides the same level of strength and toughness, but with lower thickness.

Another widely used carbon structural steel grade for mild steel bulb flats or bulb plates is ABS Grade A, which has high tensile strength and is readily weldable. Grade ABS Grade A offers high yield strength and has great toughness to withstand harsh maritime conditions. ABS Grade A is often used in the most demanding marine environments and is able endure strong forces from waves and wind without breaking or failing.

Grades Width Length Thickness
ASTM AH36 Up to 430mm Up to 9000mm From 4.0mm
ABS Grade A Up to 430mm Up to 9000mm From 4.0mm

Other mild steel bulb flat grades and sizes are available upon request. You can request to cut your mild steel bulb flats down to size.

Kian Huat Metal

Kian Huat Metal is Singapore’s leading mild steel bulb flat supplier with a wide distribution network that spans over 20 countries in the Asia Pacific region. With over 30 years of experience, we provide the very best quality products, prompt delivery and highest standard of services at competitive prices. At Kian Huat Metal, we supply an extensive range of metals for various applications. Our inventory includes: stainless steel, structural steel, mild steel, galvanized steel, aluminium, brass, bronze and copper. Our hot rolled and cold rolled steel is available in a wide range of shapes including: bars, rods, universal beams, universal columns, pipes, hollow sections, channels, sheets and plates. We can cut according to your exact specifications. Contact us for Mild Steel Supplier Singapore at reasonable prices.

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