Hot-dip Galvanized Steel, abbreviated as GI steel coil, remains the most widely used anti-corrosion metal material in global construction, hardware, pipeline and manufacturing industries. After immersing carbon steel strip into high-temperature pure zinc liquid, a firm zinc iron alloy layer is formed on the steel surface, which can effectively prevent rust in ordinary atmospheric environments. Greendisteel, as a senior Chinese steel exporter with 15+ years of industry experience, specializes in producing standard and heavy zinc coating hot-dip galvanized steel coils, sheets and strips for worldwide importers and metal fabricators.
The global demand for GI galvanized steel keeps rising year by year. Rural housing roof sheets, electrical cable trays, water pipes, highway guardrails, metal studs, wire mesh and agricultural fencing all rely heavily on hot-dip galvanized steel. However, the market is flooded with low-quality GI products with thin zinc layers, rough surfaces and poor ductility. Low-cost galvanized coils often crack severely during bending and stamping processing, bringing huge trouble to metal processing factories. Many middlemen have to spend extra time dealing with after-sales disputes caused by inferior galvanized steel.
At Greendisteel, we classify our GI products into commercial grade, drawing grade and deep drawing grade to match different processing requirements. For ordinary roofing and simple bending parts, we supply commercial hot-dip galvanized coils with stable mechanical properties. For deep stamping, bending and pipe making, we adopt low-carbon raw steel to produce DD13, DX51D, DX52D deep drawing GI steel without cracking. The pure zinc coating weight can be customized from 80g per square meter to 600g per square meter. We can produce regular spangle, minimized spangle and non-spangle surface as requested by buyers. Our production process strictly follows ASTM A653 and EN 10346 international standards.
Our product portfolio covers complete specifications: thickness from 0.15mm to 6.0mm, width ranging from 600mm to 1500mm. We provide one-stop processing services including slitting narrow strips, cutting flat sheets, embossing and corrugating into roof panels. After galvanizing, we carry out oiling and chromate passivation treatment to avoid white rust during long sea transportation, solving the most common problem encountered by overseas importers during container shipping. We pack every coil with waterproof plastic film and iron protection rings to ensure no damage on the sea voyage.
With 7 modern production lines and an annual capacity of over 1 million tons, Greendisteel can handle large bulk orders steadily all year round. Our factory is near Guangzhou port, so container loading is highly efficient, and we can arrange shipments quickly for FOB, CFR and CIF trade terms. Up to now, our GI hot-dip galvanized steel has been exported to more than 100 countries, maintaining long-term partnerships with over 500 global clients, with an annual export volume exceeding 400,000 tons.
We fully understand that overseas steel buyers need predictable quality and stable prices amid fluctuating raw material costs. Greendisteel updates the steel price every working day, and we can lock the cost for long-term framework orders to help our partners avoid market price risks. We provide complete MTC material certificates and support third-party quality inspection such as SGS, BV and Intertek before delivery. Small trial orders are warmly accepted so new customers can test our quality without big investment.
Whether you need bulk DX51D GI coils for color coating substrates, heavy zinc coating galvanized sheets for highway infrastructure, or narrow slit strips for hardware manufacturing, Greendisteel can fully meet your customized demands. If you are tired of unstable quality from small galvanizing workshops, choose our factory direct supply. Contact our foreign trade team today to get the most competitive price of hot-dip galvanized steel (GI) coil.
Post time: Jul-24-2026