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API2YGr60, a high-end large thickness quenched and tempered offshore engineering steel developed by the company, has successfully passed the performance test, with good indicators, reaching the industry leading level.
In view of the special material requirements of a project in deep-sea construction in China, BBN steel has deep docking with customers and designed quenched and tempered offshore steel API2YGr60 with maximum thickness of 100 mm and yield strength of 420 MPa. The CTOD (crack tip displacement test) test index used to evaluate the brittle fracture resistance of materials is extremely harsh.
In the development process, the company set up a professional research team to study the technical terms and the mechanism of the internal factors affecting CTOD. Through scientific composition design, reasonable smelting, rolling, quenching and tempering process design, and innovative production process, the company overcame the industry problems such as the difficulty of combining the impact energy of the plate thickness center of this kind of large thickness steel plate, and developed the high-end large thickness quenching and tempering technology. The physical and chemical properties of offshore steel API2YGr60 are excellent, the welding evaluation results are qualified, and the CTOD test results are good, especially the impact energy of API2YGr60 plate thickness center reaches 3 - 4 times of the project requirements, which is far better than the project requirements.
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
