Product Categories:
Hot-dip galvanized steel
Product Description
Hot-dip galvanized steel employs a metallurgical combination of molten zinc bath technology, forming a fully covering protective layer in a high-purity zinc liquid at a temperature range of 450-460℃. The coating thickness is 60-300 μm (with zinc consumption ≥ 275 g/㎡), which can completely cover the edges, weld seams and internal cavities of the steel, providing "steel armor" level protection. It is an ideal anti-corrosion solution for infrastructure in severely corrosive environments.
Product Details
Core process
1. Pre-treatment (degreasing → oil removing → acid washing → auxiliary plating treatment)
2. Hot-dip galvanizing (zinc bath at 450-460℃ → air knife controlled thickness)
3. Post-treatment (cooling → surface treatment (passivation, oil coating) → quality inspection)
Product features
Material grade and application
Coating types and surface treatment methods
Available range
Chemical composition
Mechanical property
Product features
| Features | Technical advantage | User value |
| All-domain anti-corrosion | Salt spray test > 300 hours | Outdoor steel structures such as bridges and transmission towers are maintenance-free for 20 to 50 years |
| The corner coverage rate reaches 200% of the standard ISO1461 | ||
| Self-healing protection | Sacrificial anode effect for automatic scratch repair (repair radius ≥3mm) | Reduce maintenance costs during transportation and installation |
| Strong mechanical combination | Coating - substrate adhesion ≥3.5 N/mm² (ASTM D3359) | Anti-peeling in high-friction scenarios such as shelves and guardrails |
| Full life cycle economy | The cost is one fifth of that of stainless steel, and the life cycle cost is 60% lower than that of coating | The optimal cost solutions for large-scale projects such as municipal engineering and photovoltaic power stations |
| Green and sustainable | The zinc coating is 100% recyclable and meets the LEED certification requirements | Support the construction of green buildings and carbon-neutral projects |
Material grade and application
| Grade | Material grade | Feature | Application |
| DX51D+Z,DC51D+Z | bending and forming grade（general commercial use） | low carbon steel | for general shaping and processing |
| DX52D+Z,DC52D+Z | used for drawing | low carbon steel or interstitial free steel | for drawing and shaping process |
| DX53D+Z,DC53D+Z | used for deep drawing | for deep drawing and shaping process | |
| DX54D+Z,DC54D+Z | used for special deep drawing | interstitial free steel | for specail deep drawing and shaping process |
| DX56D+Z,DC56D+Z | used for extra deep drawing | for extra deep drawing and shaping process | |
| DX57D+Z,DC57D+Z | used for special extra-deep drawing | for particularly good deep drawing property |
Coating types and surface treatment methods
| Classification | Category | Code |
| Coating type | pure zinc coating | Z |
| Surface structure | zero spangle | M |
| Surface treatment | unprocessed | U |
| chromic acid passivation | C | |
| oiling | O | |
| chromic acid passivation+oiling | CO | |
| chrome-free passivation | C5 | |
| chrome-free passivation+oiling | CO5 | |
| chrome-free inorganic passivation | IC | |
| chrome-free inorganic passivation+oiling | ICO | |
| self-lubricating | SL | |
| chrome-free self-lubrication | SL2 | |
| easy workability self-lubrication | EW | |
| inorganic self-lubrication | SW | |
| inorganic solid-state lubrication | T | |
| chrome-free and fingerprint-resistant | N5 | |
| chrome-free, highly conductive and fingerprint-resistant | NE |
Available range
| Classification | Status | Nominal dimension |
| Thickness | cold rolled base metal | 0.45～2.5mm |
| Width | steel strip, steel coil | 800～1850mm |
| Length | steel plate | 1000～6000mm |
| Inside diameter | steel strip, steel coil | 610 or 508mm |
| Coating | double-sided | 80～275g/㎡ |
| Delivery time | for stock | 10days |
| for custom | 45～60days |
Chemical composition
| Grade | Chemical composition (heat analysis) % (mass fraction) no more than | |||||
| C | Si | Mn | P | S | Ti a | |
| DX51D+Z,DC51D+Z | 0.10 | 0.50 | 0.60 | 0.10 | 0.03 | 0.20 |
| DX52D+Z,DC52D+Z | 0.10 | 0.50 | 0.60 | 0.10 | 0.03 | 0.20 |
| DX53D+Z,DC53D+Z | 0.01 | 0.30 | 0.50 | 0.05 | 0.03 | 0.20 |
| DX54D+Z,DC54D+Z | 0.01 | 0.30 | 0.30 | 0.03 | 0.02 | 0.20 |
| DX56D+Z,DC56D+Z | 0.01 | 0.30 | 0.30 | 0.03 | 0.02 | 0.20 |
| DX57D+Z,DC57D+Z | 0.01 | 0.30 | 0.30 | 0.03 | 0.02 | 0.20 |
Mechanical property
| Grade | Tensile test | ||||
| Yield strength MPa | Tensile strength MPa | Elongation A80mm% no less than | r90 no less than | n90 no less than | |
| DX51D+Z,DC51D+Z | — | 280～420 | 30 | — | — |
| DX52D+Z,DC52D+Z | 160～280 | 270～410 | 32 | — | — |
| DX53D+Z,DC53D+Z | 140～220 | 260～380 | 36 | 1.6 | 0.17 |
| DX54D+Z,DC54D+Z | 120～210 | 260～350 | 38 | 1.8 | 0.18 |
| DX56D+Z,DC56D+Z | 120～180 | 260～350 | 40 | 2 | 0.21 |
| DX57D+Z,DC57D+Z | 120～170 | 260～350 | 42 | 2.1 | 0.22 |
Energy Infrastructur
Energy Infrastructur
High-voltage transmission towers (galvanized with 300g/㎡), wind power bases
Transportation engineering
Transportation engineering
Highway wave-shaped guardrails (EN ISO 1461), port mooring piles
Industrial facilities
Industrial facilities
Intelligent storage shelves (resistant to forklift collisions), sewage treatment pool frames
Agricultural buildings
Agricultural buildings
Greenhouse frame (resistant to fertilizer corrosion)
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Contact Us
E-mail: partner@rosensteelga.com
Tel: +86-27-86615388
WhatsApp: +86 177 6252 7953
WeChat:Rosen17762527953
Add.: No. 1, 30th Floor, Building 1, Fuxing Huiyu Waterfront International, Sanjiao Road Village, Xujiapeng Street, Wuchang District, Wuhan City, Hubei Province,P.R.China
