Galvanized Steel Manufacturer | Sheets, Tubes, Coils & Strips
Yanshan Steel is a high-quality manufacturer and global supplier of galvanized steel products. We utilize advanced continuous hot-dip galvanizing lines and electrolytic cells to ensure consistent zinc coating adhesion, uniform thickness, and superior corrosion resistance across sheets, coils, tubes, and slit strips.
Dual Barrier & Sacrificial Defense
Zinc provides an impervious physical barrier and acts as a sacrificial galvanic anode that protects exposed steel even if scratched or pierced.
High Cost-Effectiveness
Minimal maintenance overhead over a 30+ year lifespan provides significantly lower total lifecycle costs than painted bare carbon steel.
Versatile Processability
Easily roll-formed, laser-cut, stamped, and resistance-welded using standard sheet metal tolling equipment.
Immediate Usability
Requires zero on-site curing time, post-painting, or drying; ready for immediate structural assembly upon delivery.
Standardized Mill Quality
Manufactured strictly to ASTM A653, EN 10346, and JIS G3302 standards with certified Mill Test Certificates (MTC).
Dimensional Specifications Of Galvanized Coated Steel
Supplied across sheets, continuous coils, tubular sections, and precision slit ribbons.
| Product Form | Thickness Range | Width Range | Length / Delivery Condition |
|---|---|---|---|
| Galvanized Steel Sheets | 0.12 – 4.0 mm | 600 – 1500 mm | 1000 – 6000 mm (Cut-to-Length) |
| Galvanized Steel Coils | 0.12 – 4.0 mm | 600 – 1500 mm | Continuous Wounded Coil Form |
| Galvanized Steel Tubes & Pipes | 0.5 – 12.0 mm | 15 – 500 mm OD (Round / Square / Rectangular) | 3000 – 12000 mm |
| Galvanized Precision Slit Strips | 0.12 – 3.0 mm | 10 – 600 mm (Deburred Edges) | Continuous Ribbon Slit Coil |
ASTM Standards Compliance & Zinc Coating Weight Designations
Certified according to ASTM international specifications covering commercial, structural, and alloyed coatings.
| Standard Specification | Primary Application | Coating Designation | Minimum Total Coating Weight |
|---|---|---|---|
| ASTM A653 / A653M | General commercial and structural load-bearing building | G30 to G185 (Regular, Minimized, Zero Spangle) | 90 to 550 g/m² (Triple Spot Total) |
| ASTM A792 / A792M | High atmospheric and severe marine corrosion resistance | AZ30 to AZ150 (Al-Zn Alloy Galvalume) | 90 to 450 g/m² |
| ASTM A875 / A875M | Enhanced formability and deep stamping with Zinc-5% Al | ZM40 to ZM120 (Galfan Alloy) | 120 to 360 g/m² |
| ASTM A1046 / A1046M | High-temperature operating environments and exhaust ducts | ZM60 to ZM150 (Zinc-Aluminum-Magnesium) | 180 to 450 g/m² |
Steel Grade Classifications: CS, DS, DDS, EDDS & Structural Steel (SS)
From high-ductility automotive press drawing to heavy structural framing load bearing.
| Grade Classification | Minimum Yield Strength | Tensile Strength Range | Recommended Industrial Applications |
|---|---|---|---|
| Commercial Steel (CS Types A, B, C) | 140 – 280 MPa | 270 – 440 MPa | General forming, moderate bending, unexposed brackets, appliance chassis |
| Drawing Steel (DS Types A, B) | 140 – 240 MPa | 270 – 380 MPa | Deep drawing, complex stamped shapes, HVAC duct fittings |
| Deep Drawing Steel (DDS) | 120 – 220 MPa | 270 – 350 MPa | Severe deep drawing applications requiring high tensile elongation |
| Extra Deep Drawing Steel (EDDS) | 100 – 190 MPa | 260 – 350 MPa | Automotive exposed outer body panels, intricate multi-step press stamping |
| Structural Steel (SS Grades 33, 40, 50, 80) | 230 – 550 MPa | 310 – 620 MPa | Load-bearing building framing, roof purlins, solar mounting racks, highway guardrails |
Galvanized Steel Manufacturing Processes
Operating both thermal hot-dip lines and electrolytic deposition cells to serve diverse customer requirements:
Hot-Dip Galvanizing Process (HDG)
Steel passes continuously through pre-treatment cleaning degreasing tanks, an inert reduction annealing furnace, and submerses directly into molten zinc at 450°C. Air knives control coating thickness precisely, producing tightly bonded metallurgical zinc-iron alloy layers with pure zinc on top.
Electrogalvanizing Process (EG)
Uses electrochemistry to uniformly deposit microscopic zinc ions from an aqueous electrolyte solution onto the surface of cold-rolled steel. Operating at room temperature avoids thermal distortion, creating an ultra-smooth, uniform surface optimal for high-gloss automotive painting.
Applications of Galvanized Steel Across Core Industries
Building & Civil Infrastructure
Galvanized steel’s versatility and durability make it an indispensable structural choice across the construction industry.
Automotive & Transportation
Used extensively in vehicle components requiring high corrosion protection combined with press formability.
Agricultural & Food Storage
Survives harsh rural environments with exposure to moisture, animal manure ammonia, and agricultural fertilizers.
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