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The working environment of the ship is extremely harsh. The hull shell has to withstand the corrosion of seawater, marine organisms and microorganisms; the hull also has to withstand large wind and wave shocks and alternating loads; the shape of the ship makes its processing technology more complex. So the requirements for steel for hull structure are more stringent.
First of all, good toughness is the most critical focus of marine steel plates. In addition, marine steel plates are required to have high strength, good corrosion resistance, excellent weldability, formability and surface quality.
Of course, in order to ensure quality and sufficient toughness, marine steel plates require that the content of chromium and manganese should be above 2.5%, and there are also strict requirements on the content ratio of carbon metal elements, and they should be produced by steel mills approved by the ship inspection department.
Having said so much, is it better to choose ordinary steel plate or stainless steel plates for marine steel plates?
In fact, it is necessary to choose stainless steel plate or ordinary steel plate according to the different needs of the ship.
GB T 5312 Carbon and carbon-manganese steel seamless steel tubes and pipes are mainly for ship use, also known as shipbuilding steel pipes. Under GB T 5312, there are mainly 5 steel grades: grade 320, 360, 410, 460 and 490. Each grade covers three levels: I, II, III.
Angle steel, commonly known as angle iron, is a long strip of steel whose sides are perpendicular to each other. There are equal angle steels and unequal angle steels. The two sides of equal angle steel are equal in width. The unequal angle steel is also known as L shape profile steel.
Flat bar steel can be produced according to the user's needs, with fixed thickness, width and length. It can reduce the cutting process for users, reduce the consumption of labor and materials, and also reduce the processing loss of raw materials.
Bulb flat steel for shipbuilding
The bulb flat steel is a kind of medium section material which is mainly used in the field of shipbuilding and bridge building, and the shipbuilding bulb flat steel is an auxiliary medium section material for shipbuilding.
The steel for shipbuilding and oil platform---FH40, is the high tensile strength steel.The shipbuilding steel FH40 is the Hull structural steel.We can provide FH40 shipbuilding steel plate price.
The steel for shipbuilding and oil platform---EH40, is the high tensile strength steel.The shipbuilding steel EH40 is the Hull structural steel.We can provide EH40 shipbuilding steel plate price.
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BBN SHIP STEEL FACTORY
