Challenge of shipbuilding steel during usage

Ships are exposing in harsh environment, they are usually face waves, sunlight, seawater and winds and so on. Accordingly, shipbuilding steel should have the ability to resistant the harsh environment.

Corrosion and Rust
Ships are frequently exposed to seawater, leading to corrosion and rusting of steel, particularly at the hull bottom and above the waterline.

Fatigue and Stress
Ships experience complex mechanical stresses during navigation and wave impacts, such as the impact of wind, waves, seawater, and debris, these may cause fatigue cracking and deformation of steel.

Chemical Effects of Seawater
Salt content, microorganisms, and chemicals in seawater corrode steel, accelerating aging and damage.

Cold Temperature Effects
Steel used in polar and cold sea regions must withstand stresses and deformations at low temperatures.

Balance of Weight and Strength
Ship design requires balancing the weight and strength of steel to ensure adequate structural integrity while maintaining buoyancy and maneuverability.

To address these challenges, ship steels undergo special alloy designs and processing to enhance corrosion resistance, fatigue resistance, and mechanical properties. Additionally, various measures are taken during ship design and maintenance to prolong steel life and ensure safety.

Common shipbuilding steel grades
ASTM A131 Grade A, B, D, E
ABS Grade A, B, AH32, DH32, EH32, AH36, DH36, EH36
DNV Grade A, B, D, AH32, DH32, EH32, AH36, DH36, EH36
CCS Grade A, B, AH32, DH32, EH32, AH36, DH36, EH36

Hot ProductsSee More+

  • Shipbuilding steel pipe

    Shipbuilding steel pipe

    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.

  • Shipbuilding use angle steel

    Shipbuilding use angle steel

    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.

  • Shipbuilding flat bar

    Shipbuilding flat bar

    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

    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.

  • FH40 Shipbuilding steel plate

    FH40 Shipbuilding steel plate

    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.

  • EH40 Shipbuilding steel plate

    EH40 Shipbuilding steel plate

    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.

You can contact us through the following ways:

If you are interested in our company or products, welcome to visit our company or local offices; you can also get contact with us through online consulting, demand table submission, e-mails and telephones. Our staff shall wholeheartedly provide product information, application knowledge and good service for you.

  • Hotline:0086-371-86151827
  • Fax:    0086-371-86011881
  • E-mail:[email protected]