Premium Coated Steel Coils & Sheets

Your Trusted Coated Steel Distribution Partner

Located in Tianjin and established in 1998, Runfei Steel Group is a leading distributor and processor of premium coated steel products. Coated steel combines the structural strength of a raw steel base with advanced metallic or organic coatings to prevent rust and degradation. Supported by our 30,000-ton indoor storage facility and a massive 300,000-ton annual processing capacity in the Hangu Industrial Park, we supply high-performance coated coils and sheets that meet rigorous international standards for buyers across over 60 countries.

Our Core Coated Steel Categories

We supply a diverse portfolio of surface-treated steel to match your exact project environment and aesthetic requirements:

• Galvanized Steel (GI): Coated with a protective layer of pure zinc. It offers excellent sacrificial protection against rust, making it the industry standard for general construction and HVAC ductwork.

• Galvalume Steel (GL): Coated with an alloy of aluminum and zinc. This provides superior heat reflectivity and significantly higher long-term corrosion resistance in extreme weather environments compared to standard galvanized steel.

• Prepainted Galvanized/Galvalume Steel (PPGI / PPGL): Pre-coated with vibrant, durable paint layers (such as PE, SMP, or PVDF) over a zinc or aluzinc base. These color-coated coils are perfect for visually appealing exterior applications.

Key Applications & Industries

The exceptional durability and visual appeal of our coated steel make it the material of choice for:

• Building & Construction: Corrugated roofing sheets, exterior wall cladding, rain gutters, and lightweight steel framing.

• Home Appliances: High-quality exterior panels for refrigerators, washing machines, and air conditioning units.

• Automotive & Transport: Internal structural components and underbody parts requiring enhanced rust protection.

• General Fabrication: Electrical enclosures, insulated sandwich panels, and commercial signage.

Frequently Asked Questions (FAQ)

Q: What is the main difference between Galvanized (GI) and Galvalume (GL) steel?
A: Galvanized steel uses a 100% zinc coating, which is highly effective for basic rust prevention. Galvalume steel uses a coating composed of 55% aluminum, 43.4% zinc, and 1.6% silicon. Galvalume offers better heat resistance and can last up to twice as long as galvanized steel in highly corrosive environments, such as coastal areas.

Q: Can you provide color-coated steel (PPGI) in specific RAL colors?
A: Yes, we supply PPGI and PPGL coils in a wide variety of standard RAL colors. We ensure consistent color matching, high gloss retention, and excellent paint adhesion to prevent peeling during your roll-forming or bending processes.

Q: Do you offer custom processing for coated steel coils?
A: Absolutely. With our advanced service center, we offer precision coil slitting, edge trimming, and cut-to-length services. We also apply protective films to coated surfaces prior to shipping to prevent any scratching during transport and final installation.