Africa 120,000 TPA GI/GL Galvanizing Line
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Project Overview
SME Group supplied a 120,000 TPA Continuous Galvanizing Line (GI/GL) for a cold-rolled steel processing plant in Africa. The production line is designed to manufacture high-quality hot-dip galvanized (GI) and galvalume (GL) steel coils for applications in construction, home appliances, roofing, and general manufacturing.
The line processes steel strip with widths from 650–1,250 mm and thicknesses from 0.15–1.0 mm, operating at a maximum line speed of 120 m/min. Product quality is designed to comply with JIS G3302 (GI) and JIS G3321 (GL) standards.
Technical Highlights
- Annual production capacity of 120,000 tons
- Continuous production of both GI and GLproducts on one line
- Horizontal annealing and reduction furnace with electric radiant tube heating for precise temperature control
- Ceramic fiber furnace lining for improved thermal efficiency and reduced energy consumption
- Protective atmosphere jet cooling system for uniform strip cooling before coating
- Electrically heated zinc/aluminum-zinc pots for stable bath temperature, lower dross generation, and longer service life
- Single air knife system for accurate coating weight control and excellent surface quality
- Integrated tension leveler to improve strip flatness and surface finish
- Passivation and anti-fingerprint treatment available to enhance corrosion resistance and product appearance
- Future-ready design allowing upgrade to ZAM (Zinc-Aluminum-Magnesium)coating production
Process Flow
Coil Loading → Uncoiling → End Shearing → Welding → Entry Looper → Cleaning & Degreasing → Annealing & Reduction → Hot-Dip Galvanizing / Galvalume Coating → Air Cooling → Water Quenching → Hot Air Drying → Surface Treatment → Tension Leveling → Passivation / Anti-Fingerprint Treatment → Exit Looper → Inspection → Recoiling → Packing
Customer Benefits
- Production of premium-quality GI and GL steel coils meeting international standards
- Stable coating quality and excellent strip flatness for downstream processing
- Improved energy efficiency through electric heating and optimized furnace design
- High automation level for reliable operation and reduced maintenance
- Flexible production with future capability for ZAM coating upgrades
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