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Product Features
Continuous Galvanization
Using techniques perfected by years of experience, Dongbu Steel’s hot-dip galvanized steel sheet is formed on a line that is continuously galvanizing to guarantee smooth, high quality end products.
Dongbu Steel is committed to offering galvanized steel sheet with a broad range of base metal qualities, including commercial, lock forming, drawing, and structural quality. Moreover, each product undergoes a chromatic process for protection against rust.
Superior Formability
Highly workable steel sheet and strips are used as base metals for all galvanized steel sheet produced at the Cold Rolling Facility of Dongbu Steel. The base metals in coil are continuously annealed, galvanized, and properly leveled. The galvanized sheet provides superior formability with base metals.
Excellent Corrosion Resistance
All galvanized steel sheet is treated with chromic acid for protection against rust, to maintain original surface luster for a longer period.
Consistent Quality
Production is carried out using a rigorous quality control process and a strict quality inspection based on high quality production standards. As a result, product quality, dimensions, and other properties strictly conform to customer demand.
Production Availability
1CGL (Inchon Works)
| Strip Thickness |
0.23 ~ 1.6mm |
| Strip Width | 500 ~ 1250mm |
| Coating Mass |
Regular : 60 ~ 650g/m², Minimized : 120 ~ 275g/m² |
| Coil I.D |
508 and 610mm |
| Coil O.D |
1880mm max |
| Coil Mass |
20 tons max |
| Steel Grade |
CQ, LFQ, DQ, SQ |
| Main Products |
GI Regular Spangle, Minimized Spangle |
2CGL (Inchon Works)
| Strip Thickness |
0.35 ~ 2.3mm |
| Strip Width | 600 ~ 1380mm |
| Coating Mass |
Zero : 80 ~ 650g/m², ALCOT : 40 ~ 180g/m² |
| Coil I.D |
508 and 610mm |
| Coil O.D |
2100mm max |
| Coil Mass |
23 tons max |
| Steel Grade |
CQ, LFQ, DQ, DDQ, SQ |
| Main Products |
GI Zero Spangle ALCOT |
3CGL (Asan Bay Works)
| Strip Thickness |
0.30 ~ 2.0mm |
| Strip Width |
600 ~ 1600mm |
| Coating Mass |
GI : 60 ~ 720g/m², GA: 60 ~ 180g/m², SGL : 60 ~ 250g/m² |
| Coil I.D |
508 and 610mm |
| Coil O.D |
2200mm max |
| Coil Mass |
25 tons max |
| Steel Grade |
CQ, LFQ, DQ, DDQ, EDDQ, SQ |
| Main Products |
GI Zero Spangle Galvannealed SuperGalum |
Production Availability
| DesignationType | KS D 3506 | JIS G 3302 | ASTM | EN | |||
|
cold- rolled base metal used |
hot- rolled base metal used |
cold- rolled base metal used |
hot- rolled base metal used |
OLD | A653-97 | ||
| Commercial Quality | SGCC | SGHC |
SGCC |
SGHC |
A 526 |
CS Type A & B |
EN 10142 |
| Lock Forming Quality | - | - | - | - | A 527 |
CS Type C |
|
| Commercial Soft Quality | SGCC-L | - | SGCC-L | - | A 526-L |
FS Type A & B |
EN 10142 |
| Commercial Hard Quality | SGCH | - | SGCH |
- | - | - | - |
| Drawing Quality | SGCD1 SGCD2 SGCD3 |
- | SGCD1 SGCD2 SGCD3 |
- | A 528 |
DDS EDDS |
EN 10142 |
| Structural Quality | SGC340 SGC400 SGC440 SGC490 SGC570 |
SGH340 SGH400 SGH440 SGH490 SGH540 |
SGC340 SGC400 SGC440 SGC490 SGC570 |
SGH340 SGH400 SGH440 SGH490 SGH540 |
A446 | Grade 230 Grade 255 Grade 275 Grade 340 class 1,2,3 Grade 550 |
EN 10147 |
Surface finish
| Type | Surface Finish |
|
Regular |
Standard spangles with flower pattern, suited for general use |
|
Zero |
More minimized spangles than regular, with a beautiful gloss, suited for general painting applications |
|
Ultra |
Extremely minimized spangles suited for special painting applications |
|
Alloy coated iron-zinc |
Galvannealed steel sheet has a highly workable iron-zinc alloy layer. Good paint-adherence properties, corrosion resistance and weldability make them ideal for use in home electrical appliances and buildings |
Surface Treatment
|
Type |
Application |
|
Chromate |
General |
|
Non-treated |
General painting |
|
Organic |
Drawing |
|
Oiling Type |
Not Oiled |
Oiled |
Surface Finish and Applications
|
Classification |
Weight of zinc coating |
Surface Finish |
Quality |
Application |
| Regular Spangle finish | Z06~Z60 |
 |
Commercial Quality Lock Forming Quality Drawing Quality Structural Quality |
Various utensils & containers Building & civil engineering materials Automobile parts culverts & under drains. guardrails |
| Minimized Spangle finish | Z06~Z60 |
 |
Commercial Quality Drawing Quality Structural Quality |
Home electric applications, steel furniture & office equipment Various apparatuses |
| Ultra Smooth Finish | Z06~Z60 |  |
Commercial Quality Drawing Quality Structural Quality |
For painting steel furniture & office equipments, home electric applications |
| Zero Spangle finish | Z06~Z60 |
 |
Commercial Quality Drawing Quality Structural Quality |
Steel furniture & office equipment, painting |
| Galvannealed Finish | F04~F18 |  |
Commercial Quality Drawing Quality Structural Quality |
Home electrical appliances (Washer, Microwave oven) Building materials, automobile parts, various fuel tanks |
Applications
Building (Interior/Exterior)
Automotive Components
Home Electrical Appliances
Others: painting, etc.
Applied Specifications
- KS D 3506
- Remarks: KS D 3053-88
- JIS G 3302-98
- ASTM A653/A653M-97
- EN
