0.6m Width DX51 SPCC Grade Galvanized Steel Coils Hot Dipped GI coils
Prime Quality GI Hot Dipped Galvanized Steel Coils DX51 SPCC Grade
Specification
| Item |
Value |
| Standard |
AiSi, ASTM, bs, DIN, GB, JIS |
| Place of Origin |
China |
| Brand Name |
SENYILU |
| Type |
Steel Coil |
| Technique |
Cold Rolled |
| Surface Treatment |
Galvanized |
| Application |
Ship Plate |
| Special Use |
High-strength Steel Plate |
| Width |
0.6m-3m or as required |
| Length |
4m-12m or as required |
| Tolerance |
±1% |
| Type |
Hot-Galvanized Steel Sheet |
| Processing Service |
Bending, Welding, Decoiling, Cutting, Punching |
Product Packaging
Product packaging can be customized according to customers and according to factory standards
Advantages
- Low processing cost: The cost of hot-dip galvanizing and rust prevention is lower than that of other paint coatings
- Multi-faceted protection: Each part of the plated parts can be plated with zinc, even in recesses, sharp corners and hidden places can be protected in many ways
- The inspection is simple and convenient: The hot-dip galvanized layer can be tested visually and with a simple non-destructive coating thickness table
Applications
Galvanized steel coil products are mainly used in construction, light industry, automobile, agriculture, animal husbandry, fishery and other industries. Such as building roofs, highway guardrails, sheet metal processing, roof grilles, household appliance enclosures, ventilation ducts, chimneys, kitchen utensils, grain storage and transportation, frozen processing of meat and aquatic products, etc.
Packaging & Shipping
Frequently Asked Questions
1. What does zinc coating weight mean? What options do you offer?
Zinc coating weight (also called zinc mass) is measured in g/m² (both sides total). It determines the corrosion resistance lifespan of the steel.
| Grade |
Coating Mass (g/m²) |
Typical Application |
| Z40-Z80 |
40-80 |
Indoor use, light protection |
| Z100-Z140 |
100-140 |
General construction, roofing |
| Z180-Z275 |
180-275 |
Heavy industry, structural components |
| Z350-Z450 |
350-450 |
Coastal areas, high-corrosion environments |
Note: Higher coating weight = longer service life = higher cost. We recommend selecting based on your actual environmental conditions.
2. What standards do you follow?
Our galvanized steel coils comply with major international standards:
- ASTM A653 - American Standard
- JIS G3302 - Japanese Standard
- EN 10346 - European Standard
- GB/T 2518 - Chinese Standard
All products come with Mill Test Certificates (MTC) that can be provided upon shipment.
3. What is spangle? Regular spangle vs zero spangle - which should I choose?
Spangle refers to the visible crystal patterns on the surface of galvanized steel, formed during the solidification of the zinc coating.
| Type |
Description |
Best For |
| Regular Spangle |
Visible snowflake-like crystals |
Applications where appearance is not critical; prepainted base |
| Zero Spangle (Minimal Spangle) |
Smooth, uniform surface with no visible crystals |
Painting applications, prepainted steel, automotive parts, where surface smoothness matters |
Recommendation: If you plan to paint directly on the surface, zero spangle is strongly recommended for better paint adhesion.
4. Does galvanized steel rust?
While galvanized steel offers excellent corrosion protection, white rust (zinc oxide) can occur under certain conditions:
- Poor ventilation during storage
- High humidity or condensation
- Direct contact with rainwater
5. How to prevent white rust?
Prevention methods:
- Passivation treatment - We apply chromate or chromium-free passivation before shipment
- Oil coating - Anti-rust oil can be applied for ocean freight shipments
- Proper storage - Store in a dry, ventilated warehouse; avoid outdoor storage