When global metal importers and engineering contractors look for a one-stop supplier for coated steel products, they need a manufacturer that can provide Alu-Zinc GL steel, hot-dip GI galvanized steel, electro-galvanized EGI steel, plus high-end Polyester and PVDF pre-painted steel all under one roof. Greendisteel, located in Guangzhou city, has built a complete industrial chain covering base galvanized steel production and color coating processing over 15 years. We are able to supply the full range of coated steel materials to global buyers, helping you reduce multiple supplier management costs and unify product quality standards.
Let’s sort out our complete product system clearly. First, our three core base metal substrates: Alu-Zinc Coated Steel (GL / galvalume coil), Hot-dip Galvanized Steel (GI) and Electro-galvanized Steel (EGI).
Alu-Zinc GL steel with 55% Al-Zn alloy coating, best for outdoor anti-corrosion projects and as the top substrate for color coated steel, with outstanding salt fog resistance for coastal regions.
Hot-dip GI pure zinc coated steel, the most cost-effective choice for general atmospheric anti-rust applications such as roof sheets, guardrails and metal structures.
Electro-galvanized EGI electrolytic zinc steel with ultra-smooth surface, specially developed for home appliance panels, auto stamping parts and precision hardware with high surface flatness requirements.
On the basis of these three high-quality base coils, we produce high-end Polyester / PVDF Pre-painted Steel. Ordinary Polyester coating balances cost and outdoor durability, which is widely used in rural building roof panels, agricultural warehouses and simple steel structures. PVDF fluorocarbon paint is our high-end product line, which can resist ultraviolet rays, acid rain and salt fog for more than 25 years without obvious fading or chipping, making it the first choice for high-rise curtain walls, coastal industrial plants and landmark construction projects. We customize solid colors, metallic shades, wood grain, stone grain and embossed patterns according to international color cards such as RAL and Pantone.
The biggest pain point for most overseas steel purchasers is dealing with several different factories separately for base galvanized steel and color coated coils. Different suppliers have inconsistent raw material standards, leading to unstable adhesion between the base metal and the paint layer. Some importers receive bare GL coils from one mill and send them to another coating factory, which increases transportation cost and quality control risks. Greendisteel solves this problem perfectly: we produce GI, GL and EGI base materials ourselves, and we process pre-painted steel on our own 7 automatic coating lines. Every production link is managed by our own technical team, so the matching between base steel and top paint is always optimal, effectively avoiding paint peeling, blistering and color difference between batches.
Our total annual production capacity exceeds 1 million tons, and the annual export volume is over 400,000 tons. We have built stable long-term cooperation with more than 500 customers covering 100+ countries worldwide, including steel trading companies, roofing sheet factories, metal component manufacturers and large engineering contractors. Our warehouse in Guangzhou keeps regular spot goods in stock all year round, so we can deliver small trial orders within one week. For long-term bulk framework orders, we can lock production capacity to ensure on-time shipment without delay.
Quality control runs through the whole production process of Greendisteel. We test zinc coating weight, surface roughness, paint thickness, bending performance and salt spray resistance for every batch of goods. We issue official mill test certificates and accept third-party inspection from SGS, BV and other well-known institutions before container loading. We adopt reinforced waterproof packaging for sea transportation to prevent moisture and rust during long-distance ocean shipping. Our professional foreign trade team offers all-round service including quotation, technical communication, production tracking, document preparation and after-sales follow-up.
In the fiercely competitive international steel trade market, integrated industrial chain and stable quality make Greendisteel stand out from numerous scattered small manufacturers. Whether you only need bare galvanized steel coils, or you want to purchase finished pre-painted color steel directly, we can provide you with one-stop procurement service. If you want to simplify your supply chain and reduce quality risks, our full series of GI, GL, EGI coated steel plus Polyester & PVDF prepainted steel will fully satisfy your purchasing plan.
Welcome overseas buyers to visit our production lines and warehouse in Guangzhou. We will prepare detailed product test reports and free samples for you. Contact Greendisteel today to get a bundled preferential quotation for multiple steel items.
Post time: Jul-28-2026