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ERW pipe
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Steel Pipe Piles
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CHQ
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Gilsonite
Hot Deep Galvanized Steel Sheet (GI)
PRODUCT INTRODUCTION
Contunuous 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.
PRODUCT AVAILABILITY
Specification
Designation Type 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
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
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