The thickness of hot-dip galvanized products ranges from 0.3 to 3.0mm, and the width is from 800 to 1800mm. The types of coatings include pure zinc coating and alloyed coating, and they can be supplied in equal thickness and differential thickness forms. The surface structures of regular products are smooth zinc flower, small zinc flower, zero zinc flower, and zinc-iron alloy. The surface treatment methods include oil coating, chromic acid passivation, chromic acid passivation plus oil coating, environmental-friendly passivation, environmental-friendly passivation plus oil coating, and environmental-friendly anti-fingerprint.
Baosteel’s hot-dip galvanized products are widely used in industries such as automobiles, home appliances, construction, and mechanical manufacturing.
| Characteristics of Baosteel’s Current Hot-Dip Galvanized Products | |
| Item | Features and Specifications |
| Coating Type | 1. Pure Zinc |
| 2. Zinc-Iron Alloy | |
| Surface Structure | 1. Zero Spangle (Zinc-Free Spangle): Lead-free coating, uniform and matte surface. |
| 2. Minimized Spangle: Surface exhibits fine zinc crystallization patterns. | |
| Coating Form | Pure Zinc Series: |
| • Equal Coating: 40/40 ~ 225/225 g/m² (Same zinc coating weight on both sides) | |
| • Differential Coating: 30 ~ 150 g/m² (Different zinc coating weight on each side, specified separately) | |
| Zinc-Iron Alloy Series: | |
| • Equal Coating: 30/30 ~ 90/90 g/m² | |
| Size Range | Cold-Rolled Substrate: |
| • Thickness: 0.3 – 3.0 mm | |
| • Width: 800 – 1830 mm | |
| Hot-Rolled Substrate: | |
| • Thickness: 1.8 – 2.8 mm | |
| • Width: 900 – 1500 mm | |
| Steel Grade | Drawing Steel: |
| • Commercial Quality (CQ) | |
| • Drawing Quality (DQ) | |
| • Deep Drawing Quality (DDQ) | |
| • Extra Deep Drawing Quality (EDDQ) | |
| • Super Extra Deep Drawing Quality (SEDDQ) | |
| Structural Steel: | |
| • Yield Strength Range: 220 – 550 MPa | |
| High Strength Steel for Cold Forming: | |
| • Yield Strength Range: 180 – 420 MPa | |
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