Galvannealed Steel - China

Galvannealed steel is a representative product of high-performance anti-corrosion coatings at the metallurgical level(It is not recommended to use galvannealed steel in its bare state).

Through a dual process of hot-dip galvanizing + precise alloying annealing, a δ1 phase (FeZn7) intermetallic compound layer with 7-15% iron content is formed on the surface of the steel base.

Its unique metallurgical bonding structure and uniform dark grey appearance have achieved a breakthrough balance between anti-corrosion performance and processing performance, making it the optimal choice for applications in harsh environments such as automobiles and high-end household appliances.

Core process

1 - Hot-dip galvanizing: Immersion in a high-purity zinc bath (Zn ≥ 99%) at 460℃, forming the initial zinc layer 2 - Alloying treatment: Induction heating to 500-550℃ (±2℃ temperature control), diffusion of zinc and iron ions to form a dense Fe-Zn alloy layer 3 - Surface optimization: Optional passivation (chromate/chrome-free), fingerprint resistance, lubrication treatment and other customized solutions As a professional Galvanized Steel Supplier, Rosen provides high-performance Galvannealed steel and Zinc Iron Alloy Steel solutions designed for demanding industrial applications.

Our GA coils combine excellent corrosion resistance, coating adhesion, and welding compatibility, making them ideal for automotive components, home appliances, and industrial equipment.

If you are looking for a reliable zinc iron alloy supplier, Rosen delivers stable quality, cost efficiency, and technical support to help you optimize production and extend product lifespan.

Company Contact:

• Posted By: Rosen (Hubei Province) International Import & Export Co., Ltd

• Phone: 27-86615388

• Address: No. 1, 30th Floor, Building 1, Fuxing Huiyu Waterfront International, Sanjiao Road Village, Xujiapen, Wuhan , Hubei , China

• Email:

• Website: https://www.rosensteelga.com/

• Business Description: Since its establishment in 2008, Ruihang Group has always been driven by innovation, growing from China's leading supplier of galvannealed steel to a dynamic benchmark in the field of comprehensive global steel services.
  
  During the past 17 years, we have worked together with top-tier partners (Baowu Group, HBIS-POSCO, VAMA, etc.
  
  ) to provide forward-looking material solutions for industries such as automotive components, smart home appliances and high-end manufacturing, with our strength ,we redefine the value of the supply chain .
  
  Today, our footprints are crossing borders, in 2025, we have established Rosen (Hubei Province) International Import & Export Co., Ltd. to promote China's "intelligent manufacturing" galvannealed products to Southeast Asia, Middle East and European markets, to help customers around the world to optimize the cost and enhance competitiveness.
  
  Our Products:
  
  - Galvannealed Steel
  
  - Cold Rolled Steel Supplier
  
  - Door Frame
  
  - Finished Door
  
  - Electro Galvanized Steel