SGCC Galvanized Steel Coil (GI Coil)
SGCC galvanized steel coil, the Japanese standard (JIS G3302) grade for general purpose forming. Equivalent to DX51D. Ideal for roofing, appliances, and fabrication. Mill certified.
| Material | Hot-Dip Zinc Coated Commercial Quality Steel Coil |
|---|---|
| Grade / Standard | SGCC |
| Thickness | 0.12mm - 4.0mm |
| Width | 600mm - 1500mm |
| Inner Diameter (ID) | 508mm / 610mm |
| Coil Weight | 3-12 Tons |
| Delivery Condition | hot_rolled |
| Surface Treatment | galvanized |
| MOQ | 5 Tons |
| Delivery Time | 10-25 Days / In Stock |
| Loading Port | Tianjin / Shanghai / Qingdao |
Overview of SGCC Galvanized Steel Coil
SGCC is the primary Japanese Industrial Standard (JIS) G3302 grade for commercial quality, hot-dip galvanized steel coil. The ‘SGCC’ designation signifies a soft, general-purpose steel ideal for forming applications. This grade is globally recognized for its excellent bending performance, reliable quality, and cost-effectiveness. The hot-dip zinc coating provides robust corrosion protection, making SGCC one of the most widely used materials worldwide for roofing, wall cladding, appliance manufacturing, and general sheet metal work where good formability is the main requirement.
Key Features of SGCC Grade
The defining characteristic of SGCC is its excellent formability and bending properties. As a ‘commercial quality’ or ‘soft’ grade, it is not intended for structural applications but is guaranteed to be suitable for locking, bending, and moderate forming without the risk of the zinc coating flaking or peeling. This makes it a highly reliable and predictable material for roll-forming and stamping operations.
SGCC galvanized coils are available with a wide range of zinc coating weights specified under JIS G3302, such as Z12 (120 g/m²), Z18 (180 g/m²), and Z27 (275 g/m²), allowing users to select the appropriate level of corrosion resistance for their application. The surface can be supplied with various treatments, including chromate passivation (for better corrosion resistance) and oiling, and spangle options from regular spangle to zero spangle for applications requiring a smooth paint finish.
Main Applications of SGCC Steel Coil
The excellent formability and reliability of SGCC make it a staple raw material across many industries:
– **Construction:** It is the primary raw material for manufacturing corrugated roofing sheets, trapezoidal profiles, sandwich panels, rainwater gutters, downspouts, and non-structural steel framing.
– **HVAC:** Its ease of fabrication makes it a standard material for producing air conditioning ducts, ventilation components, and casings for HVAC units.
– **Appliances:** SGCC is widely used for the outer casings and internal components of home appliances like washing machines, refrigerators, microwave ovens, and air conditioner housings.
– **General Fabrication:** It is used for making drums, pails, simple stamped parts, steel furniture components, computer cases, and various sheet metal enclosures.
Why Choose Us for SGCC Galvanized Coil
Shandong Tanglu Metal Material Co., Ltd. is a leading supplier of prime SGCC galvanized steel coil. We source our material from top-tier mills to ensure consistent quality and full compliance with the JIS G3302 standard. We understand that predictable forming performance is critical for our customers. Therefore, every coil is supplied with an original Mill Test Certificate (MTC) that verifies the chemical composition and zinc coating weight. As a globally recognized grade, we maintain a large inventory of SGCC coils in various thicknesses and coating weights, ready for prompt shipment to roll-formers, appliance manufacturers, and fabricators worldwide.
📐 Dimension & Size Table
| Thickness (mm) | Width (mm) | Zinc Coating (g/m²) | Coil Weight (T) |
|---|---|---|---|
| 0.12-0.25 | 600-1250 | 60-120 | 3-5 |
| 0.25-0.50 | 600-1250 | 80-180 | 3-8 |
| 0.50-0.80 | 700-1500 | 80-275 | 5-10 |
| 0.80-1.50 | 700-1500 | 100-275 | 5-12 |
| 1.50-4.00 | 1000-1500 | 120-275 | 5-12 |
* Custom sizes available upon request. Tolerances per relevant international standards.
🔬 Chemical Composition
| Element | Min | Max | Display Value | Note |
|---|---|---|---|---|
| Note | Not specified in JIS G3302 for SGCC grade. | Composition is determined by the mill for commercial quality steel. | ||
| P | - | 0.050 | ≤0.050 | per JIS G3302 |
| S | - | 0.050 | ≤0.050 | per JIS G3302 |
* Chemical composition may vary by heat, thickness and specification. Please refer to the actual mill test certificate.
⚙️ Mechanical Properties
| Property | Value | Unit | Test Condition |
|---|---|---|---|
| Yield Strength (Re) | - | MPa | Not specified for SGCC commercial quality grade. |
| Tensile Strength (Rm) | - | MPa | Not specified for SGCC commercial quality grade. |
| Elongation (A) | - | % | Not specified for SGCC commercial quality grade. |
| Formability | Excellent | - | Guaranteed to be suitable for bending and moderate forming. |
| T-Bend Test | ≤2T | Typical value, indicates excellent coating adhesion. |
* Values shown are minimum requirements unless otherwise stated.
📦 Commercial Information
| Packaging | Standard seaworthy export packing for galvanized steel coils. Coils are packed vertically (eye to sky), wrapped with waterproof paper and PE film, and then with a hardboard or steel outer protector. The package is secured with steel straps through the coil's eye and around its circumference. Edge protectors are used. Each coil is placed on a wooden pallet or steel skid and clearly tagged with all specification details. |
|---|---|
| Payment Terms | T/T (Telegraphic Transfer),L/C (Letter of Credit) |
| Price Term | FOB,CFR,CIF,EXW |
| Supply Capacity | 30,000 Tons/Month |
| Loading Port | Tianjin / Shanghai / Qingdao |
Why Choose Our SGCC Galvanized Steel Coil (GI Coil)?
Excellent Bending Performance
SGCC grade is specifically produced as a 'soft' commercial quality steel, guaranteed to be suitable for bending, locking, and moderate roll-forming without cracking.
JIS G3302 Certified
Supplied with a Mill Test Certificate confirming full compliance with the Japanese Industrial Standard JIS G3302, a globally recognized benchmark for quality.
Versatile & Cost-Effective
The ideal and most widely used choice for a huge range of general-purpose applications, including roofing, appliances, ductwork, and fabrication where formability is key.
Wide Range of Zinc Coatings
Available with various standard zinc coating weights such as Z12 (120 g/m²), Z18 (180 g/m²), and Z27 (275 g/m²) to meet different corrosion resistance requirements.
Global Standard Equivalence
Commercially equivalent to other major international standards like EN 10346 DX51D+Z and ASTM A653 CS Type B, making it a globally accepted and easily specifiable grade.
🏭 Applications of SGCC Galvanized Steel Coil (GI Coil)
SGCC galvanized steel coil is the workhorse material for manufacturers and fabricators worldwide. Its reliable formability makes it the primary material for roll-forming into various roofing and cladding profiles. In the HVAC industry, it is easily fabricated into ducting. It is also stamped and bent to create casings for home appliances, components for steel furniture, and a wide array of general-purpose sheet metal parts that require good bending properties but not high structural strength.
📋 Quality & Certification
Our Certifications
- ✅ ISO 9001:2015
- ✅ CE Marking
- ✅ ABS
- ✅ DNV GL
- ✅ Lloyd's Register (LR)
- ✅ Bureau Veritas (BV)
- ✅ SGS Certified
- ✅ NK
- ✅ RINA
Mill Certificate Type
- 📋 EN 10204 3.1
- 📋 EN 10204 3.2
- 📋 Original Mill Certificate
- 📋 Third Party Inspection Available
- 📋 Certificate of Origin
❓ Frequently Asked Questions
What is SGCC galvanized steel?
SGCC is a material grade from the Japanese Industrial Standard (JIS) G3302. It stands for: S - Steel, G - Galvanized, C - Cold-Rolled, C - Commercial Quality. It is a soft, non-structural steel grade known for its excellent bending and forming properties, making it ideal for general-purpose fabrication.
Does SGCC have a guaranteed tensile strength?
No. Under the JIS G3302 standard, the SGCC commercial quality grade does not have specified minimums for tensile strength, yield strength, or elongation. It is sold based on its guaranteed formability. If you require guaranteed mechanical properties, you should specify a structural grade like SGC400 (400 MPa tensile strength).
What is the difference between SGCC and SGCD?
The difference is the level of formability. SGCC is 'Commercial Quality' for general bending and forming. SGCD is 'Drawing Quality' for more demanding stamped parts. There are further grades like SGCDD for 'Deep Drawing Quality'. As formability increases, the cost of the material also generally increases.
What is the equivalent of SGCC in other standards?
SGCC is a widely used grade with close commercial equivalents in other major standards. The most common equivalents are EN 10346 DX51D+Z (European standard) and ASTM A653 CS Type B (American standard). These grades are all intended for similar general-purpose forming applications.
What do the zinc coating codes Z12, Z18, Z27 mean?
These are common designations in the JIS system that refer to the total zinc coating weight on both sides of the sheet in grams per square meter (g/m²). For example: Z12 = 120 g/m², Z18 = 180 g/m², and Z27 = 275 g/m². A higher number indicates a thicker zinc coating and better corrosion resistance.
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SGCC Galvanized Steel Coil (GI Coil)
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