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With the development of deep-sea explorationand ocean shipping, higher and higher requirements are put forward for the corrosion resistance of ship plates and marine structures, including atmospheric corrosion resistance, seawater corrosion resistance and crude oil corrosion resistance. Among them, corrosionresistant steel for cargo tanks of oil tankers has been the focus of international research and development in recent ten years.
Oil tanker is an important tool for international crude oil transportation. Its cargo tanks are mainly made of AH32 and AH36 steel plates with poor corrosion resistance, which are coated for corrosion protection. For the coating protection form, the coating maintenance shall be carried out regularly, which is expensive, long construction period and harsh construction environment. In 2010, the International Maritime Organization (IMO) identified the use of corrosionresistant steel as an alternative to protective coatings. In 2013, IMO's performance standard for marine corrosion-resistant steel was officially implemented.
In addition, in order to improve the service life of offshore structures, it is necessary to develop test methods for seawater corrosion resistance, mainly ESSO test and double tensile test proposed by Japan classification society.
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
