At present, the application of high-strength steel in the fields of shipbuilding and oil platforms is as follows:
In the field of shipbuilding:
Hull structure: High-strength steel is widely used in the main structural parts of the hull, such as ship plates, ship beams, keels, etc. These parts bear most of the load of the hull. The use of high-strength steel can reduce the weight of the hull while ensuring the structural strength, improve the cargo capacity and sailing speed of the ship, and reduce fuel consumption. For example, in order to improve the loading capacity, large container ships use a large amount of high-strength steel to build the hull structure.
Deck part: The deck is the main place for people and cargo activities on ships and needs to bear greater pressure and wear. The use of high-strength steel can improve the bearing capacity and wear resistance of the deck and prolong the service life of the deck. In addition, for some special-purpose ships, such as offshore engineering ships, icebreakers, etc., the deck has higher requirements for the strength and toughness of steel, and high-strength steel becomes the preferred material.
Superstructure: The superstructure of a ship includes the bridge, crew cabins, chimneys, etc. Although the load on the superstructure is relatively small, in order to reduce the overall weight of the ship and improve the stability of the ship, high-strength steel will also be partially used.

Plate Size Range:
Width: 1500-4800mm
Thickness: 4.5-650mm
Length: 3000-27000mm

 

 

 

In the field of oil platforms:
Platform main structure: Oil platforms are in a harsh marine environment for a long time and need to bear the effects of various loads such as wind waves, ocean currents, and earthquakes. High-strength steel can provide sufficient strength and stiffness for the platform to ensure the stability and safety of the platform. For example, in key parts such as the pile legs, pile shoes, and cantilever beams of jack-up platforms, due to the high load requirements and in order to improve the stability during towing after the hull is floated, high-strength steel plates are needed.
Offshore riser: The offshore riser is an important pipeline connecting subsea oil wells and platforms and needs to bear various harsh conditions such as high pressure, high temperature, and corrosion. High-strength steel has good pressure resistance and corrosion resistance and can meet the use requirements of offshore risers.
Mooring system: The mooring system is an important facility for fixing oil platforms and needs to bear the huge tension and impact force of the platform. The mooring chain made of high-strength steel has the characteristics of high strength, good toughness, resistance to seawater corrosion, fatigue resistance, and wear resistance, and can ensure the safe fixation of the platform in harsh sea conditions.

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