32 years manufacturer and supplier of prepainted steel coil .
Authentic Steel Group is a professional Chinese manufacturer of prepainted steel and a globally trusted supplier of color‑coated steel coils. Our color coating production line delivers an annual capacity of 50,000 tons, complying with JIS G3312, EN 10169 and ASTM A755 standards, covering grades including SGCC, SGCH, DX51D/DX52D/DX53D/DX54D, S250GD, S350GD, S450GD and G550.
Supported by advanced production facilities and rigorous process management, we produce premium color‑coated steel coils with thickness ranging from 0.15‑1.20 mm and width from 600‑1250 mm. Our ultra‑thin, high‑strength color‑coated products within 0.085‑1.40 mm enjoy outstanding price advantages and gain wide popularity among overseas clients. Multiple paint systems are available: PE, SMP, HDP and PVDF, with RAL‑standard colors and custom patterns supported.
Prepainted Steel or Color‑coated steel coil (PPGI/PPGL) is produced by applying organic paint layers onto galvanized or galvalume steel substrates. Combining metallic anti‑rust layer and organic top‑coat, it forms a dual‑protection system against rust, UV radiation and harsh weather conditions. Compared with bare galvanized and cold‑rolled steel, color‑coated steel features decorative versatility plus extended service life, requiring minimum maintenance for roofing, wall panels and household‑appliance applications.
Frequently Asked Questions ：
Q1: What is PPGI and PPGL?
A1: PPGI is prepainted galvanized steel coil with zinc substrate. PPGL is prepainted galvalume steel coil with aluminum-zinc substrate, offering better corrosion resistance.
Q2: What coatings do you offer?
A2: We provide PE, SMP, HDP and PVDF paint systems. RAL standard colors and custom patterns are available.
Q3: What are the main applications of PPGI & PPGL?
A3: Widely used for roofing sheets, wall panels and home appliance panels.
Q4: Which standards can your steel meet?
A4: Our color coated steel complies with JIS G3312, EN 10169 and ASTM A755.
