Breakthrough of Heavy‑Duty Materials: Localized Production of Deep‑Sea Tendon‑Pipe Steel Ushers in an Era of Deep‑Ocean Energy Exploration
The deep‑sea zone constitutes the primary battlefield for offshore wind‑power exploitation and marine oil‑gas development. Premium‑grade steel pipe materials for offshore engineering serve as the robust cornerstone for deep‑sea exploration. Good news emerged from the industry on August 4: Angang’s self‑developed ANTHICK‑series high‑strength‑toughness heavy‑plate steel has officially supplied China’s first‑ever 36‑inch tendon steel‑pipe project for tension‑leg platforms. The breakthrough breaks overseas material monopoly and accelerates the full‑industrial‑chain localization of deep‑sea equipment. As a manufacturer specialised in offshore‑engineering steel pipes, we are greatly encouraged.
I. Severe Working Conditions Assign Critical Missions to Tendon Steel Pipes
The steel material for this project is engineered for ultra‑deep‑sea waters reaching 1500‑metre depth. A tension‑leg platform is firmly anchored to the seabed via tendon steel pipes. These pipes endure persistent deep‑sea high pressure, ocean‑wave impact and cyclic alternating fatigue loads. Therefore the steel must satisfy strict specifications covering ultra‑high strength, low‑temperature toughness, fatigue resistance and seawater‑corrosion resistance.
For a long time, this type of special offshore‑engineering steel relied on overseas imports. Extended lead‑times and exorbitant procurement costs have hindered the advancement of domestic floating offshore‑wind and deep‑sea oil‑gas programmes.
II. Hard‑core Research Tackles Technical Bottlenecks of Deep‑sea‑grade Materials
Angang assembled a special industry‑university‑research task‑force. By benchmarking imported materials, the team repeatedly adjusted steel composition and rolling procedures, and resolved technical challenges such as high‑pressure endurance and cyclic fatigue resistance. The resulting ANTHICK high‑strength‑toughness heavy‑plate steel meets international advanced performance benchmarks. Successful mass‑production supply has put an end to domestic reliance on imported critical‑use materials.
From laboratory‑based research and property testing to commercial‑scale manufacturing, research personnel have prioritised independent innovation and consolidated the upstream material foundation for offshore‑engineering steel pipes.
III. Localization Breakthrough Unlocks a New Landscape for Deep‑sea Energy Resources
Floating offshore wind power represents the mainstream of future marine clean‑energy industries, and deep‑sea petroleum resources are essential to national energy security. As the core load‑bearing component of the platform, the localized 36‑inch tension‑leg tendon steel pipe drastically cuts deep‑sea‑equipment expenditure, secures supply‑chain safety and speeds‑up energy‑resource exploitation within waters over one thousand metres deep, facilitating the marine‑power‑nation strategy.
IV. Commit to Craftsmanship and Specialise in High‑end Offshore‑engineering Steel‑pipe Manufacturing
Self‑sufficiency in raw materials brings fresh‑found opportunities and obligations for steel‑pipe fabricators. For years, we have focused on custom‑built steel pipes for construction and deep‑sea projects, fully aware that offshore components determine the long‑term operational safety of marine installations.
Moving forward, we shall keep pace with upgrades to domestic premium‑grade steel, enforce strict quality‑control throughout pipe forming, welding, flaw‑detection and anti‑corrosion workflows, and conduct research into deep‑sea tendon tubes and marine‑engineering pipeline goods.
We march toward the deep‑ocean with dedicated steel‑making craftsmanship. The breakthrough of home‑grown special steel marks merely the starting‑point. Upholding our industrial‑sector commitment, we pursue superior quality and technological innovation. Together with upstream and downstream partners, we aim to complete the whole industrial chain for offshore‑engineering pipes and contribute manufacturing strength to China’s exploitation of far‑sea clean‑energy resources.
Jia hui