Pre-coated galvanized color-coated coils use galvanized steel (GI) or galvanized steel (AZ) as the substrate. After surface degreasing and chemical conversion treatment, they are coated with an organic coating (such as polyester PE or fluorocarbon PVDF) and then baked and cured to form a colored coating. The core process includes substrate pretreatment, coating, and curing. The coating thickness is typically 15-25μm.

Bright Surface Steel Sheet Prepainted Galvanized Color Coated PPGI Steel Coil

The substrate is galvanized steel (GI) or galvanized steel (AZ). The zinc coating weight is 40-275g/m². The bright finish is achieved through skin-pass rolling. The reflectivity is ≥85%.

Coating options include polyester (PE) and fluorocarbon (PVDF). The front coating thickness is 15-25μm, and matte and gloss finishes are available.

GI Color Coated Steel Coil: A steel coil with an organic coating applied to a galvanized steel (GI) base, offering both the corrosion protection of the galvanized layer and the decorative appeal of a color coating.

PPGI Steel Roll: Prepainted galvanized steel coil. The base is galvanized steel, coated using a continuous roll coating process and then baked. It offers weather resistance and a variety of colors.

The AZ150 substrate features an aluminum-zinc alloy coating (55% aluminum content) with a zinc coating weight of 150g/m², conforming to ASTM A792M.

Pre-coating options include polyester (PE), silicone-modified polyester (SMP), or PVDF. Coating thicknesses range from 15-25μm on the front and 5-8μm on the back, supporting standard colors such as RAL 9019. Thickness ranges from 0.12-2.0mm, widths from 600-1250mm, roll weights from 1-6 tons, and inner diameters from 508/610mm.

Tensile strength ≥ 280MPa, yield strength ≥ 140MPa, elongation ≥ 14% (per GB/T 2518). Salt spray resistance reaches 1000 hours (red rust ≤ 5%), suitable for C3-C4 corrosion environments.

DX51D/DX52D/DX53D pre-coated galvanized steel coil (PPGI/PPGL) is a high-performance steel widely used in the construction, home appliance and automotive industries.

PPGI Steel Coil (pre-coated galvanized steel coil) is galvanized steel with a color coating.
Thickness Range: 0.12mm–1.5mm, customizable widths (20mm–1500mm).
Coating Type: Double-sided coating, front coating thickness 15–25μm, back coating thickness 7–14μm.
Base Material: Commonly used galvanized steel such as SGCC and DX51D, with a zinc coating of 40–275g/m².

Hot Rolled Steel Coils SS400

Product Specifications and Pricing
Thickness and Width:
1.5mm: Width 800-1600mm (Common 1250mm)
2.0mm: Width 1000-1500mm (Customizable)
2.5mm: Width 1250-1600mm (Coil Weight 3-10 Tons)

Material Standards: ASTM A36/A36M, GB/T 700 (Q235B)

Chemical Composition:
Carbon (C) ≤0.25%, Manganese (Mn) 0.80%-1.20%, Sulfur (S) ≤0.05%

Mechanical Properties:
Yield Strength ≥250MPa, Tensile Strength 400-550MPa, Elongation ≥20%

Applications
Construction: Steel frames, bridges, roof panels (2.5mm is commonly used)
Machinery: Equipment bases, conveyor belts (1.5-2.0mm is suitable)
Ships and containers: Reinforcement ribs, inner linings (Z275 galvanized coating is optional)

Hot Rolled Coil ASTM A36 Carbon Steel Coil

Product Specifications and Pricing
Thickness and Width:
1.5mm: Width 800-1600mm (Common 1250mm)
2.0mm: Width 1000-1500mm (Customizable)
2.5mm: Width 1250-1600mm (Coil Weight 3-10 tons)
Material Standard: ASTM A36/A36M, GB/T 700 (Q235B)

Chemical Composition:
Carbon (C) ≤0.25%, Manganese (Mn) 0.80%-1.20%, Sulfur (S) ≤0.05%

Mechanical Properties:
Yield Strength ≥250MPa, Tensile Strength 400-550MPa, Elongation ≥20%

Applications
Construction: Steel frames, bridges, roof panels (2.5mm is commonly used)
Machinery: Equipment bases, conveyor belts (1.5-2.0mm is suitable)
Ships and containers: Reinforcement ribs, inner linings (Z275 galvanized coating is optional)

Product Definition and Classification
Hot-dip galvanized steel coils are corrosion-resistant steels made by dipping carbon steel coils into molten zinc (approximately 450°C) to form a zinc-iron alloy layer (Zn-Fe). Based on the weight of the zinc layer, they are categorized as follows:
Z60-Z120: Zinc layer 60-120g/m² (light corrosion protection)
Z180-Z275: Zinc layer 180-275g/m² (heavy corrosion protection, such as building structures)

Technical Parameters and Pricing
Thickness 0.12-6.0mm (common 0.3-3.0mm)
Zinc layer weight 30-600g/m² (double-sided)

Core Application Scenarios
Construction: Roof panels, wall panels (requires a zinc coating of Z180 or higher)
Home Appliance Manufacturing: Refrigerator back panels, washing machine housings (Z60-Z80)
Automotive: Chassis components, exhaust pipes (requires fingerprint-resistant treatment)

Q235 Hot Rolled Steel Coils
Product Specifications
Thickness and Width:
1.5mm: Width 800-1600mm (1250mm common)
2.0mm: Width 1000-1500mm (customizable)
2.5mm: Width 1250-1600mm (coil weight 3-10 tons)

Material Standards: ASTM A36, GB/T 700 (Q235B)
Surface Treatment: Bare or Shot Blasted

Applications
Construction: Steel structure frames, roof panels (2.5mm thickness is common)
Machinery: Equipment bases, conveyor belts (1.5-2.0mm thickness is suitable)
Ships and containers: Reinforcement ribs, lining plates (optional Z275 galvanized coating required)

S235JR Cold-Rolled Steel Coil
Grade: S235JR (European Standard EN 10025-2), a non-alloy structural steel corresponding to China's Q235B.
Surface Treatment: Pickling or GI coating is typically required after cold rolling to improve corrosion resistance.
Cold Rolling Process: Thickness 0.3-6.0mm, Width 600-1500mm, Coil Weight 3-10 tons (Standard Coil ID 508/610mm).
Surface Condition: Smooth surface finish (SPCC grade) after cold rolling, with custom pickling or oiling available.

Applications
Building Structures: Beams, columns, roofs (requires galvanizing or spray coating for corrosion protection)
Machinery: Drive shafts, gears, molds
Automotive Parts: Chassis, suspension systems (requires high-precision cold rolling)

Comparison with Other Grades
S235JR vs. SPCC: S235JR is structural steel, while SPCC is ordinary cold-rolled steel with lower strength.
S235JR vs. Q235B: They offer similar performance, but Q235B has a slightly higher sulfur content limit (0.045%).

DX51D Cold Rolled Steel Coils

Grade: DX51D (JIS G3302 standard), cold-rolled steel coil for hot-dip galvanized substrates, corresponding to the Chinese standard SGCC

Production Process and Specifications
Cold Rolling Process: Thickness 0.12-3.0mm, Width 20-1500mm, Coil Weight 3-10 tons (Standard Coil ID 508/610mm)
Galvanizing Process: Hot-dip galvanizing (Z30-Z275), with surface options of Zero Spangle, Mini Spangle, or Regular Spangle.
Surface Treatment: Additional chromating, oiling, or passivation treatments are available to enhance corrosion resistance.

Applications
Construction Industry: Roofing, wall cladding (PPGI color-coated sheet)

Comparison with Other Grades
DX51D vs. SPCC: DX51D is a galvanized steel substrate, while SPCC is ordinary cold-rolled steel that requires subsequent galvanizing.
DX51D vs. SGCC: DX51D is a JIS standard grade, while SGCC is its Chinese counterpart, offering similar performance.

304 Cold Rolled Stainless Steel Coil

Basic Properties and Grades
Grade:
JIS Standard: SUS304 (0Cr18Ni9)
ASTM Standard: 304/304L (Low Carbon Version)

Chemical Composition:
C ≤ 0.07% (304L ≤ 0.03%), Cr 17.0-19.0%, Ni 8.0-11.0%
Magnetic Properties: Weakly magnetic or non-magnetic at room temperature (cold working may induce martensitic transformation)

Production Process and Specifications
Cold Rolling Process: Thickness 0.025-4.0mm, Width 10-1500mm, roll weight customizable.
Surface Finish:
2B (matte), BA (mirror), 8K (high-reflective mirror), HL (hairline).
Annealing: Solution treatment (1050-1100°C) eliminates cold working stress and restores the austenitic structure.

Common Grades and Standards
DC01/DC03/DC04: Low-carbon cold-rolled stainless steel coil, conforming to JIS G3141. Suitable for deep-drawn parts (such as appliance housings and automotive parts).
304/316L: 300 series austenitic stainless steel, with a smooth surface finish after cold rolling (2B/BA) and high corrosion resistance. Suitable for food processing and chemical equipment.

Production Process and Specifications
Cold-rolled process: Thickness 0.1-3.0 mm, width 10~1500mm, roll weight can be customized on demand
Surface treatment: 2B (matte), BA (mirror), HL (hairline), etc. are available to meet the needs of different industries
Typical application areas
Automobile manufacturing: exhaust systems (304/316L), fuel tanks (DC01)
Home appliance industry: refrigerator liners (304), washing machine drums (DC03)
Industrial equipment: chemical pipelines (316L), precision instruments (304)

Cold-rolled steel coil is primarily made from low-carbon steel, processed through a cold-rolling process. Using low-carbon steel as raw material, cold-rolled steel coil typically has a carbon content between 0.1% and 0.25%. Some products may contain low-alloy or high-alloy components.
Strength and Hardness: Cold-rolled steel sheet generally has higher strength and hardness than hot-rolled material, but work hardening may increase yield strength.
Ductility: Annealed cold-rolled steel coil (such as SPCC and DC01) has better ductility and is suitable for stamping; unannealed (chilled) coil has higher hardness and is suitable for simple forming.
Common Grades
Common grades include SPCC, SPCD, SPCE, DC01, and DC03. SPCC is ordinary cold-rolled carbon steel, while DC01 is annealed cold-rolled steel sheet.