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Marine Bulb Flat Steel

HP80×6 bulb flat steel is a common marine steel.
Oct 20th,2025 83 الآراء

  • Basic dimensions: In "HP80x6," "HP" stands for bulb flat steel, "80" refers to the nominal width of the bulb flat steel, and "6" indicates a web thickness of 6 mm. The bulb head height is approximately 20 mm, and the theoretical weight is 4.88 kg/m.
  • Implementation standards: The domestic standard mainly implemented is GB/T 9945-2012 "Hot-rolled bulb flat steel", and some companies also implement European standards such as EN10067:1996.
  • Material: The material of bulb flat steel corresponds to the ship plate and is divided into general strength (such as Class A, Class B, Class D, etc.) and high strength (such as AH32, AH36, DH32, DH36, etc.). Bulb flat steel certified by the corresponding classification society should be selected according to the ship plate requirements of different classification societies.
  •  Performance characteristics: It has high yield strength, tensile strength and elongation, and can maintain good plastic deformation ability when bearing large loads. At the same time, it has good welding performance and can be connected with other steel materials through welding to form a structural system with high strength and good stability.
  • Application areas: Mainly used in shipbuilding as reinforcement of ship plates, similar to the "ribs" of the hull, and can also be used in the construction of offshore platforms and offshore facilities. 

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