| Supply & Processing Capability | |||
|---|---|---|---|
| Description | Galvanized Coil Supply | Cut-to-Length | Slitting |
| Type | GALVANIZED STEEL | ||
| Thickness (mm) | 0.20–2.50 mm | 0.20–5.00 mm | 0.20–2.50 mm |
| Width (mm) | 1,219 mm | 1,219–2,000 mm | 50–1,219 mm |
| Coil ID (mm) | 500 mm and 650 mm | – | 500 mm and 620 mm |
| Coil OD (mm) | 1,950 mm max | – | 1,950 mm max |
| Output Coil Weight (MT) | 5 MT max | – | 5 MT max |
| Zinc Coating (g/m²) | 60–275 g/m² | ||
| Length (mm) | – | 500–4,000 mm max | – |
Galvanized (GI) Steel Coils & Sheets – Types, Grades, Specifications & Standards
| Description | Specification |
|---|---|
| Product | Galvanized Steel / Hot-Dip Galvanized Steel |
| ASTM Standard | ASTM A653/A653M:2023 |
| ASTM Grades / Classes | CS Type A, CS Type B, CS Type C; FS Type A, FS Type B; SS Grade 33, 37, 40, 50, 80 |
| EN Standard | EN 10346:2015 |
| EN Steel Grades | DX51D, DX52D, DX53D, S220GD, S250GD, S280GD, S320GD, S350GD, S450GD, S550GD |
| JIS Standard | JIS G 3302:2022 |
| JIS Standard Status | Referenced edition; supersedes JIS G 3302:2019 |
| JIS Steel Grades | SGCC, SGCH, SGCD1, SGCD2, SGC340, SGC400, SGC440, SGC490, SGC570 |
| Product Type | Tension Levelled / Non-Tension Levelled |
| Skin Treatment | Skin Passed / Non-Skin Passed |
| Surface Finish | Large Spangle / Regular Spangle / Minimized Spangle / Suppressed Spangle |
| Surface Treatment | Chromate Passivated (Cr6+ / Cr3+), Non-Chromate Passivated, Oiled, Non-Oiled, No Treatment |
Galvanized (GI) Steel Coils & Sheets: International Standards & Equivalent Grades
| Classification | ASTM A653/A653M:2023 | EN 10346:2015 | JIS G 3302:2022 |
|---|---|---|---|
| Commercial Quality | CS Type A, B, C | DX51D | SGCC / SGCH |
| Lock Forming Quality | CS | DX51D | SGCD1 |
| Drawing Quality | FS Type A, B | DX52D | SGCD2 |
| Deep Drawing Quality | DDS / EDDS | DX53D | SGCD3 |
| Structural Quality – Lower Grades | SS Grade 33 / 37 | S220GD / S250GD / S280GD | SGC340 / SGC400 |
| Structural Quality – Higher Grades | SS Grade 40 / 50 / 80 | S320GD / S350GD / S450GD / S550GD | SGC440 / SGC490 / SGC570 |
GI Galvanized Steel Coils & Sheets – Specifications & International Standards
SRK Steel supplies Hot-Dip Galvanized Steel Coils (GI Coils) and Galvanized Steel Sheets manufactured in accordance with leading international standards, including ASTM, JIS and EN specifications. The material is manufactured and quality-controlled to meet agreed mechanical, dimensional and zinc-coating requirements for industrial, construction and fabrication applications.
GI steel coils and sheets can be supplied in different grades, thicknesses, widths and zinc-coating weights to meet project-specific requirements across the UAE, GCC and selected international markets. Quality inspection and testing are carried out at the manufacturing and processing stage in accordance with the applicable technical specification and agreed customer requirements.
Applicable International Standards for GI Steel Coils & Sheets
The following international standards are commonly applicable to Hot-Dip Galvanized Steel Coils and Sheets. The specific standard, steel grade, coating designation and mechanical properties can be selected according to the customer's application and project requirements.
| International Standard | Standard / Specification | Description |
|---|---|---|
| ASTM | ASTM A653/A653M | Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated by the Hot-Dip Process |
| JIS | JIS G 3302 | Hot-Dip Zinc-Coated Steel Sheet and Strip |
| EN | EN 10346 | Continuously Hot-Dip Coated Steel Flat Products – Technical Delivery Conditions |
GI Steel Coil Standards & Equivalent Specifications
Depending on the application, GI coils and sheets can be supplied to ASTM A653/A653M, JIS G 3302 and EN 10346 requirements, subject to the specified steel grade, mechanical properties, thickness and dimensional tolerances, and zinc-coating requirement.
Customers can specify requirements such as:
- Steel grade and mechanical properties
- Coating designation / zinc coating weight
- Base metal thickness
- Coil or sheet width
- Dimensional tolerances
- Surface finish
- Spangle requirements
- Oiling or passivation
- Coil weight and packing requirements
- Mill Test Certificate (MTC) and inspection documentation
For projects in the UAE, Saudi Arabia, Qatar, Oman, Kuwait and other GCC markets, the applicable galvanized steel specification should be confirmed according to the project drawings, consultant requirements and relevant technical standards.
Quality & Compliance
SRK Steel focuses on supplying GI steel coils and sheets that meet agreed requirements for zinc-coating performance, dimensional accuracy and mechanical properties. Material can be supplied with relevant technical documentation and Mill Test Certificates (MTC), subject to the agreed specification and order requirements.
Hot-Dip Galvanized Steel Coils and Sheets supplied by SRK Steel are suitable for applications including roofing, cladding, ducting, HVAC, fabrication, construction, structural components, fencing, roll forming and general engineering.
ZINC COATING MASS
| Coating Type | Coating Designation | Minimum Requirement – Triple-Spot Test Total Both Sides (g/m²) | Minimum Requirement – Single-Spot Test One Side (g/m²) | Minimum Requirement – Single-Spot Test Total Both Sides (g/m²) |
|---|---|---|---|---|
| Zinc | Z350 | 350 | 120 | 300 |
| Zinc | Z275 | 275 | 94 | 235 |
| Zinc | Z180 | 180 | 60 | 150 |
| Zinc | Z120 | 120 | 36 | 90 |
| Zinc | Z90 | 90 | 30 | 75 |
| Zinc | Z001 | No minimum | ||
ASTM A653/A653M-2023 – Specification for Galvanized Steel Coils & Sheets
ASTM A653/A653M-2023 is an internationally recognized specification covering steel sheet coated with zinc (galvanized) or zinc-iron alloy (galvannealed) through the continuous hot-dip coating process.
The standard is published by ASTM International and establishes requirements for the chemical composition, mechanical properties, coating characteristics, dimensions and other technical requirements applicable to hot-dip coated steel sheet.
ASTM A653/A653M-2023 for GI Steel Coils
ASTM A653/A653M is widely referenced for Hot-Dip Galvanized (GI) Steel Coils and Sheets used in construction, roofing, cladding, HVAC, fabrication, automotive, fencing and general engineering applications.
Depending on the required application, galvanized steel supplied to ASTM A653/A653M can be specified by:
- Steel grade
- Yield strength
- Tensile strength
- Elongation
- Base metal thickness
- Coating designation
- Zinc coating requirements
- Width and dimensional tolerances
- Surface finish
- Oiling and chemical treatment requirements
Galvanized and Galvannealed Steel under ASTM A653/A653M
ASTM A653/A653M covers both zinc-coated galvanized steel and zinc-iron alloy-coated galvannealed steel produced using a continuous hot-dip coating process.
For standard GI galvanized steel coils and sheets, the coating consists primarily of zinc and provides corrosion protection to the underlying steel. Galvannealed products have a zinc-iron alloy coating and are commonly selected where specific forming, painting or fabrication requirements apply.
Applications of ASTM A653 Galvanized Steel
Galvanized steel coils and sheets manufactured or supplied to ASTM A653/A653M are commonly used for:
- Roofing and wall cladding
- HVAC ducting and components
- Steel fabrication
- Fencing and mesh products
- Cable trays and electrical applications
- Roll-formed profiles
- Structural and construction components
- Automotive and industrial components
- General engineering applications
For projects in the UAE and GCC markets, the required ASTM A653/A653M grade, coating designation, thickness, width and mechanical properties should be specified according to the project drawings, consultant requirements and application.
SRK Steel supplies GI galvanized steel coils and sheets according to agreed technical requirements and applicable international standards, with material documentation and Mill Test Certificates (MTC) available where required.
CHEMICAL COMPOSITION
Chemical Composition – ASTM A653/A653M
Maximum values unless otherwise indicated; values are in mass %.
| Classification | Type / Grade | C | Mn | P | S | Al | Cu | Ni | Cr | Mo | V | Cb (Nb) | Ti | N |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ASTM A653/A653M | CS Type A | 0.10 | 0.60 | 0.030 | 0.035 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | ||
| CS Type B | 0.02–0.15 | 0.60 | 0.030 | 0.035 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | |||
| CS Type C | 0.08 | 0.60 | 0.100 | 0.035 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | |||
| FS Type A | 0.10 | 0.50 | 0.020 | 0.035 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | |||
| FS Type B | 0.02–0.10 | 0.50 | 0.020 | 0.030 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | |||
| DDS | 0.06 | 0.50 | 0.020 | 0.025 | 0.01 | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | |||
| EDDS | 0.02 | 0.40 | 0.020 | 0.01 | 0.20 | 0.15 | 0.06 | 0.10 | 0.15 | — | ||||
| SS Grade 230 / Grade A / Grade 33 | 0.20 | — | 0.04 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | ||||
| SS Grade 255 / Grade B / Grade 37 | 0.20 | — | 0.10 | 0.04 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | |||
| SS Grade 275 / Grade C / Grade 40 | 0.25 | — | 0.10 | 0.04 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | |||
| SS Grade 340 C1 / Grade D / Grade 50 | 0.25 | — | 0.20 | 0.04 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | |||
| SS Grade 340 C2 / Grade E / Grade 50 | 0.25 | — | 0.20 | 0.04 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | |||
| SS Grade 340 C3 / Grade F / Grade 50 | 0.25 | — | 0.04 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.025 | — | ||||
| SS Grade 550 / Grade E / Grade 80 | 0.20 | — | 0.04 | — | 0.20 | 0.15 | 0.06 | 0.008 | 0.015 | 0.025 | — | |||
TYPICAL RANGES OF MECHANICAL PROPERTIES
| Classification | Type | Yield Strength (MPa) Min. (MPa) Min. | Tensile Strength (MPa) Min. | Elongation in 50 mm Min. (%) |
|---|---|---|---|---|
| ASTM A653 | CS type A | 170/380 | – | ≥ 20 |
| ASTM A653 | CS type B | 205/380 | – | ≥ 20 |
| ASTM A653 | CS type C | 170/410 | – | ≥ 15 |
| ASTM A653 | FS type A | 170/310 | – | ≥ 26 |
| ASTM A653 | FS type B | 170/310 | – | ≥ 26 |
| ASTM A653 | DDS | 140/240 | – | ≥ 32 |
| ASTM A653 | EDDS | 105/170 | – | ≥ 40 |
| ASTM A653 | SS-Gr 230/Gr A/ Gr 33 | 230 | 310 | 20 |
| ASTM A653 | SS-Gr 255/Gr B/ Gr 37 | 255 | 360 | 18 |
| ASTM A653 | SS-Gr 275/Gr C/ Gr 40 | 275 | 380 | 16 |
| ASTM A653 | SS-Gr 340 C1/Gr D/ Gr 50 | 340 | 450 | 12 |
| ASTM A653 | SS-Gr 340 C2/Gr E/ Gr 50 | 340 | – | 12 |
| ASTM A653 | SS-Gr 340 C3/Gr F/ Gr 50 | 340 | 480 | 12 |
| ASTM A653 | SS-Gr 550/Gr E/ Gr 80 | 550 | 570 | – |
EN 10346:2015 – European Standard for Galvanized Steel Coils & Sheets
EN 10346:2015 is a European Standard covering continuously hot-dip coated steel flat products, including Hot-Dip Galvanized (GI) Steel Coils and Sheets. The standard specifies technical delivery conditions and requirements for steel products coated with zinc, zinc-iron alloys and other metallic coatings.
EN 10346:2015 consolidated and replaced several earlier European standards covering continuously hot-dip coated steel products, including EN 10327:2004, EN 10326:2004, EN 10142 and EN 10147.
EN 10346:2015 for Hot-Dip Galvanized Steel Coils
EN 10346 is widely referenced for the specification and supply of galvanized steel coils and sheets used in construction, roofing, cladding, HVAC, fabrication, automotive and general engineering applications.
The standard addresses important product requirements including:
- Steel grade and designation
- Chemical composition
- Mechanical properties
- Yield strength and tensile strength
- Elongation
- Zinc coating designation
- Coating mass and coating characteristics
- Surface quality
- Dimensional and shape tolerances
- Thickness and width requirements
- Bending and forming characteristics
Galvanized Steel Grades Under EN 10346
EN 10346 includes different steel grades designed for specific applications and forming requirements. The appropriate grade and coating designation should be selected according to the intended application, forming requirements, corrosion protection requirements and project specifications.
For GI galvanized steel coils and sheets, customers can specify the required:
- Steel grade
- Base metal thickness
- Coil or sheet width
- Zinc coating designation
- Surface finish
- Mechanical properties
- Dimensional tolerances
- Coil weight and packing requirements
- Mill Test Certificate (MTC)
EN 10346 Galvanized Steel for UAE & GCC Applications
EN 10346 galvanized steel coils and sheets are suitable for a wide range of applications across the UAE and GCC markets, including roofing and cladding systems, HVAC ducting, steel fabrication, fencing, roll forming, electrical components and construction products.
For project-specific requirements, the applicable EN 10346 steel grade, coating designation, thickness and dimensional tolerances should be confirmed against the project drawings, consultant specifications and end-use requirements.
SRK Steel supplies Hot-Dip Galvanized (GI) Steel Coils and Sheets according to agreed technical requirements and applicable international standards, including EN 10346, ASTM A653/A653M and JIS G 3302, with relevant quality documentation and MTC available where required.
CHEMICAL COMPOSITION
| Classification | Type | Chemical Composition (mass %, maximum unless otherwise stated) | |||||
|---|---|---|---|---|---|---|---|
| Classification | Type | C | Si | Mn | P | S | Ti |
| EN 10346 | DX51D | 0.18 | 0.50 | 1.20 | 0.12 | 0.045 | 0.30 |
| EN 10346 | DX52D | 0.12 | 0.50 | 0.60 | 0.10 | 0.045 | 0.30 |
| EN 10346 | DX53D | 0.12 | 0.50 | 0.60 | 0.10 | 0.045 | 0.30 |
| EN 10346 | S220GD | 0.20 | 0.60 | 1.70 | 0.10 | 0.045 | – |
| EN 10346 | S250GD | 0.20 | 0.60 | 1.70 | 0.10 | 0.045 | – |
| EN 10346 | S280GD | 0.20 | 0.60 | 1.70 | 0.10 | 0.045 | – |
| EN 10346 | S320GD | 0.20 | 0.60 | 1.70 | 0.10 | 0.045 | – |
| EN 10346 | S350GD | 0.20 | 0.60 | 1.70 | 0.10 | 0.045 | – |
| EN 10346 | S550GD | 0.20 | 0.60 | 1.70 | 0.10 | 0.045 | – |
TYPICAL RANGES OF MECHANICAL PROPERTIES
| Classification | Type | Yield Strength (MPa) MPa | Tensile Strength (MPa) MPa | Elongation (%) |
|---|---|---|---|---|
| EN 10346 | DX51D | – | 270-500 | 22 |
| EN 10346 | DX52D | 140-300 | 270-420 | 26 |
| EN 10346 | DX53D | 140-260 | 270-380 | 30 |
| EN 10346 | S220GD | 220 | 300 | 20 |
| EN 10346 | S250GD | 250 | 330 | 19 |
| EN 10346 | S280GD | 280 | 360 | 18 |
| EN 10346 | S320GD | 320 | 390 | 17 |
| EN 10346 | S350GD | 350 | 420 | 16 |
| EN 10346 | S550GD | 550 | 560 | – |
JIS G 3302:2022 – Japanese Standard for Hot-Dip Galvanized Steel Coils & Sheets
JIS G 3302:2022 is the Japanese Industrial Standard covering Hot-Dip Zinc-Coated Steel Sheets and Coils. JIS stands for Japanese Industrial Standards, which establish technical requirements for a wide range of industrial materials, products and processes in Japan.
The JIS G 3302 standard specifies requirements for hot-dip galvanized steel products, including steel grades, chemical composition, mechanical properties, coating requirements, dimensions, tolerances and other technical characteristics.
SRK Steel supplies Hot-Dip Galvanized (GI) Steel Coils and Sheets according to agreed technical requirements and applicable international standards, including JIS G 3302, ASTM A653/A653M and EN 10346.
JIS G 3302 Galvanized Steel Grades
JIS G 3302 includes several galvanized steel grades designed for different applications, forming requirements and strength levels. Common grades include:
- SGCC – Commercial Quality galvanized steel
- SGCD1 – Drawing Quality galvanized steel
- SGCD2 – Drawing Quality galvanized steel
- SGCD3 – Drawing Quality galvanized steel
- SGC340 – Higher-strength galvanized steel
- SGC400 – Higher-strength galvanized steel
- SGC440 – Higher-strength galvanized steel
- SGC490 – Higher-strength galvanized steel
- SGC570 – High-strength galvanized steel
The appropriate grade should be selected according to the required forming characteristics, strength, thickness and end-use application.
Chemical Composition of JIS G 3302 Galvanized Steel
The chemical composition requirements vary according to the steel grade. The principal elements controlled include carbon (C), manganese (Mn), phosphorus (P) and sulfur (S).
| JIS G 3302 Grade | Carbon (C) % | Manganese (Mn) % | Phosphorus (P) % | Sulfur (S) % |
|---|---|---|---|---|
| SGCC | ≤ 0.12 | ≤ 0.60 | ≤ 0.04 | |
| SGCD1 | ≤ 0.12 | ≤ 0.50 | ≤ 0.04 | |
| SGCD2 | ≤ 0.10 | ≤ 0.45 | ≤ 0.03 | |
| SGCD3 | ≤ 0.08 | ≤ 0.45 | ≤ 0.03 | |
| SGC340 | ≤ 0.25 | ≤ 1.70 | ≤ 0.10 | ≤ 0.035 |
| SGC400 | ≤ 0.25 | ≤ 1.70 | ≤ 0.10 | ≤ 0.035 |
| SGC440 | ≤ 0.25 | ≤ 1.70 | ≤ 0.20 | ≤ 0.035 |
| SGC490 | ≤ 0.25 | ≤ 1.70 | ≤ 0.20 | ≤ 0.035 |
| SGC570 | ≤ 0.25 | ≤ 1.70 | ≤ 0.20 | ≤ 0.035 |
Chemical composition values should be verified against the applicable edition of JIS G 3302 and the specific material certificate before being used as contractual acceptance criteria.
Mechanical Properties of JIS G 3302 Galvanized Steel
Mechanical properties vary according to the grade and product thickness. Important parameters include yield strength, tensile strength and elongation.
| Grade | Minimum Yield Strength (MPa) | Minimum Tensile Strength (MPa) | Elongation* |
|---|---|---|---|
| SGCC | 205 | 270 | Grade-dependent |
| SGCD1 | — | 270 | Grade- and thickness-dependent |
| SGCD2 | — | 270 | Grade- and thickness-dependent |
| SGCD3 | — | 270 | Grade- and thickness-dependent |
| SGC340 | 245 | 340 | Thickness-dependent |
| SGC400 | 295 | 400 | Thickness-dependent |
| SGC440 | 335 | 440 | Thickness-dependent |
| SGC490 | 365 | 490 | Thickness-dependent |
| SGC570 | 560 | 570 | Thickness-dependent |
*Elongation requirements depend on the applicable grade, thickness and test conditions. Refer to the current JIS G 3302 standard and material test certificate for the exact requirement.
Zinc Coating Requirements
JIS G 3302 also establishes requirements for the hot-dip zinc coating applied to the steel substrate. Coating designation and coating mass should be specified according to the required corrosion-protection performance and application.
The galvanized coating provides a protective zinc layer that helps protect the underlying steel from atmospheric corrosion. The required coating designation can be selected based on the intended application and project specification.
Applications of JIS G 3302 GI Steel Coils & Sheets
JIS G 3302 galvanized steel is commonly used for applications such as:
- Roofing and wall cladding
- Construction and building components
- HVAC ducting
- Steel fabrication
- Roll-formed sections
- Fencing and mesh products
- Automotive components
- Electrical and industrial products
- General engineering applications
JIS G 3302 Galvanized Steel for UAE & GCC Markets
For projects in the UAE, Saudi Arabia, Qatar, Oman, Kuwait and other GCC markets, JIS G 3302 galvanized steel can be specified according to the required grade, thickness, width, zinc coating designation, mechanical properties and surface finish.
SRK Steel supplies GI galvanized steel coils and sheets for construction, fabrication and industrial applications according to customer requirements and applicable international standards. Relevant technical documentation, including Mill Test Certificates (MTC), can be provided where required.
