Shagang ships and offshore engineering steel "family" adds new members

Ships, offshore platforms, offshore wind power and other marine projects operate in harsh working environments and are subject to heavy wind and wave impacts and alternating loads for a long time. Therefore, the requirements for construction materials are extremely strict. Compared with ordinary marine steel, "European standard marine steel" has higher technical requirements and requires superior weldability, high fracture toughness, high temperature tempering resistance and low strain aging sensitivity.

Tested by domestic authoritative institutions, Shagang’s “European Standard Offshore Steel” will not have any adverse effects on the steel plate itself regardless of low-energy or high-energy welding, and the product will remain stable under long-term high temperature conditions. It maintains its strength and toughness and maintains stable performance despite large deformations and long-term exposure to the natural environment. The most important thing is that the "new member" has the powerful advantage of "high fracture toughness", that is, when the steel plate is subjected to external force to cause defects, it can produce plastic deformation and absorb energy, so that it will not continue to expand along the defects and cause component failure.

"Customer feedback has been good after batch supply, and we are currently preparing for the production of new orders." Relevant personnel from Shagang Iron and Steel Research Institute introduced.

Steel for ships and offshore engineering is one of Shagang’s strategic products. It has formed multiple product systems such as ultra-high-strength marine steel, crack arrest steel for container ships, and low-temperature steel for liquefied gas ships. , the product strength level achieves full coverage from 235MPa to 690MPa, and the toughness level reaches up to -196°C, meeting the requirements of many international and domestic standards such as Europe and the United States. Among them, high-toughness and high-strength hull structure steel FH36 is used in the world's largest first fully automatic deep-sea semi-submersible "intelligent fishing ground" - "OCEAN FARM 1" (Ocean Fishing Ground No. 1); ultra-high-strength high-strength offshore steel DNV E690 It is used in the manufacturing of domestic self-elevating wind power installation ship pile legs and elevators, breaking the foreign monopoly; the "big country's important weapon" - the ultra-high-strength offshore drilling platform used by the two JU2000E self-elevating offshore drilling platforms "Guoshun" and "Guoxin" All industrial steel is supplied by Shagang; exclusive supply of 1,800 tons of 9Ni steel for the construction of the world's largest C-type LNG fuel tank; LPG marine VL 4-4 low-temperature steel is used in the construction of 40,000 cubic meters of large dual-fuel LPG/LNH3 ships...

"We will keep a close eye on international cutting-edge technologies and further increase the use of high-end, special ships and marine engineering The intensity of steel research and development has promoted the continuous improvement of Shagang's products and market competitiveness," said the person in charge of Shagang's technical quality line.