Authentic Steel Group is a professional manufacturer of hot-dipped galvanized steel coils (GI coil) with 32 years of production experience.
We run 2 dedicated galvanizing lines with an annual capacity of 80,000 tons. Our galvanized steel meets JIS G3302, EN 10147 and ASTM A653 standards, available in grades SGCC, SGCH, DX51D–DX54D, G350, G450 and G550.
Our GI coils cover thickness from 0.10 mm to 3.50 mm and width 870–1250 mm. Our ultra-thin high-strength galvanized steel (0.10–0.25 mm) has strong price advantages and is popular with global buyers.
Hot-dipped galvanized steel coil is made from cold rolled substrate with double-sided zinc coating. The zinc layer provides economical anti-corrosion protection. Compared with bare cold rolled or hot rolled steel, galvanized steel features superior rust resistance and longer service life, widely used for roofing, framing, fencing and pipe making.
Frequently Asked Questions ：
Q1: What is GI galvanized steel coil?
A1: GI coil is hot-dipped galvanized steel coil, cold rolled base with double-side zinc coating for anti-corrosion.
Q2: What zinc coating weight you can supply?
A2: We provide Z80, Z120, Z180, Z275 and other customized zinc coating.
Q3: What spangle types are available?
A3: Regular spangle, minimized spangle and zero spangle galvanized steel.
Q4: Main applications of GI coil?
A4: Roofing sheets, wall framing, fencing, steel pipes and structural components.
