Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of z275 galvanized coil in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
Products Description
Keywords: Z275 Galvanized Coil, Hot-Dip Galvanized Steel Coil, GI Coil, Zinc-Coated Steel Coil, Z275 Steel Coil Manufacturer, Galvanized Sheet
Z275 Galvanized Steel Coil is a hot-dip galvanized carbon steel coil with a zinc coating of 275 g/m² (total both sides), providing excellent corrosion resistance for construction, industrial, and automotive applications. The "Z275" grade ensures a long-lasting protective layer, suitable for roofing, wall cladding, HVAC ducts, and structural fabrication.
Manufactured under ASTM A653 / EN 10346 / JIS G3302 standards, our Z275 GI coils guarantee uniform coating, precise dimensions, and smooth surface quality, ideal for both industrial and pre-painted steel applications (PPGI).
Uncompromising Corrosion Defense for Demanding Projects & Long-Term Value
Engineered for maximum longevity and resilience in harsh environments, our premium Z275 Galvanized Coil delivers the ultimate zinc barrier protection (275g/m² coating weight) demanded by discerning B2B buyers seeking cost-effective, durable steel solutions. In a market where premature corrosion, costly maintenance, and project failures are unacceptable risks, Z275 stands as your definitive safeguard. Utilizing the rigorous Continuous Hot-Dip Galvanizing process to ISO 1461 / ASTM A653 standards, this coil provides superior rust resistance – significantly outperforming lower-coat alternatives like Z180 or Z120 – ensuring structural integrity and extended service life for critical applications from heavy-duty construction and robust agricultural equipment to essential HVAC ductwork, resilient roofing & cladding, and enduring industrial storage solutions. We understand your priorities: long-term ROI, minimized downtime, and supply chain reliability. That's why our Z275 coil offers consistent coating uniformity, excellent formability without compromising the protective layer, and bulletproof reliability sourced from certified mills. Stop replacing corroded steel and start building assets designed to last – secure your competitive edge and project peace of mind today with high-performance Z275 Galvanized Coil, the proven choice for professionals prioritizing durability and value.
Engineered to outperform in the harshest environments, Z275 Galvanized Coil delivers premium zinc protection (275g/m² coating weight) through rigorous Continuous Hot-Dip Galvanizing (HDG). Trusted by engineers, fabricators, and project managers globally, this coil sets the standard for structural integrity, extended service life, and cost-efficient asset preservation. Whether you're building robust agricultural machinery, HVAC systems, industrial warehouses, or corrosion-resistant roofing, Z275 ensures your projects outlast competitors while minimizing maintenance costs.
TECHNICAL SPECIFICATIONS
| Parameter | Value |
|---|---|
| Coating Weight | 275 g/m² (min. both sides) |
| Base Steel | Commercial Grade (DX51D, DX52D+) |
| Thickness | 0.3mm - 3.0mm (±0.05mm tolerance) |
| Width | 600mm - 1500mm (slit-to-size) |
| Surface | Regular Spangle / Minimized Spangle |
| Standards | EN 10346, ASTM A653, JIS G3302 |
Specifications – Z275 Galvanized Coil
| Property | Metric (SI) | Imperial (US) | Remarks |
|---|---|---|---|
| Base Steel | Cold Rolled Steel (CR) | Cold Rolled Steel | ASTM A653 / JIS G3302 |
| Coating Type | Zinc (Hot-Dip Galvanized) | Zinc (Hot-Dip Galvanized) | GI / Z coating |
| Coating Mass | 275 g/m² total both sides | 0.90 oz/ft² | Z275 standard |
| Thickness Range | 0.20 – 2.00 mm | 0.008 – 0.079 inch | Custom thickness available |
| Width Range | 600 – 1250 mm | 23.6 – 49.2 inch | ±3 mm tolerance |
| Coil Weight | 3 – 10 MT | 6,600 – 22,000 lbs | Per customer requirement |
| Inner Diameter (ID) | 508 / 610 mm | 20 / 24 inch | Standard export size |
| Surface Finish | Smooth, Spangle, Zero Spangle | – | Optional |
| Tensile Strength | 270 – 550 MPa | 39 – 80 ksi | Depends on steel grade |
| Yield Strength | ≥ 230 MPa | ≥ 33 ksi | – |
| Elongation | ≥ 20% | – | ASTM A653 requirement |
| Tolerance (Thickness) | ±0.02 mm | ±0.0008 inch | Standard EN 10143 |
| Tolerance (Width) | ±3 mm | ±0.12 inch | Standard JIS G3302 |
Chemical Composition (Typical % of Base Steel)
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.12 – 0.25 |
| Manganese (Mn) | 0.30 – 0.80 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.05 |
| Silicon (Si) | 0.10 – 0.50 |
| Iron (Fe) | Balance |
Key Features
✅ Excellent Corrosion Resistance – Zinc coating prevents rust and oxidation.
✅ Uniform Surface Finish – Smooth, regular spangle, or zero spangle available.
✅ High Formability & Weldability – Suitable for roll forming, bending, stamping, and welding.
✅ Durable & Cost-Effective – Ideal for roofing, construction, and industrial use.
✅ Paintable – Perfect base for PPGI (pre-painted galvanized steel).
✅ Environmentally Friendly – Lead-free, RoHS compliant.
Applications
Roofing sheets, wall panels, and ceiling panels
Electrical cabinets and enclosures
Automotive body parts and underbody components
Pipes, tubes, and structural fabrication
Pre-painted steel (PPGI) base material
Agricultural and industrial equipment
our factory
Superior Corrosion Defense
275g/m² Zinc Coating (per face) – 50%+ thicker than standard Z180/Z120 coils.
Salt Spray Resistance: Exceeds 1,500+ hours (ASTM B117), ideal for coastal & high-humidity zones.
Lifetime Protection: Slows rust progression by decades vs. untreated steel.
Engineered for Performance
ISO 1461 / ASTM A653 Compliant: Certified for critical structural applications.
Uniform Coating & Tight Spangles: Consistent finish for painting/welding; minimal aesthetic defects.
Excellent Formability: Bend, punch, or roll without coating fracture (tested per ASTM D4145).
WHY CHOOSE OUR Z275 GALVANIZED COIL?
Reduce Lifetime Costs: Eliminate premature replacement + maintenance downtime.
Project Integrity: Avoid corrosion-related structural failures & warranty claims.
Sustainability Edge: 100% recyclable; extends asset lifecycle (reduce carbon footprint).
Competitive Pricing: Volume discounts + MOQ flexibility (20-ton min.).
Inspection & Quality Assurance
All Z275 Galvanized Steel Coils are produced under ISO 9001:2015 and ASTM A653 / EN 10346 standards with the following QA process:
Raw Material Inspection: Steel grade and chemical composition verified
Coating Thickness Test: Both sides checked per ASTM A90
Surface & Spangle Inspection: Visual check for uniformity
Mechanical Testing: Tensile, yield, and elongation verified
Forming & Bend Tests: Ensures proper workability
Corrosion Testing: Salt spray (ASTM B117) optional
Third-Party Verification: SGS / BV / TUV inspection available
Documentation Supplied:
Mill Test Certificate (EN 10204 3.1/3.2)
Coating & Thickness Report
Packing List & Certificate of Origin
Packaging & Shipping
Coil ID: 508 / 610 mm standard
Coil Weight: 3–10 MT per coil
Protective Packaging: Water-resistant paper + steel strap + pallet
Marking: Grade, zinc coating, coil number, manufacturer logo
Delivery: 15–25 days depending on order size
Shipping: Sea-worthy export packing suitable for long-distance transport
Looking for high-quality Z275 Galvanized Steel Coils? We provide hot-dip GI coils in various grades, thicknesses, and widths, fully certified and export-ready.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
office@dongmjd.com
FAQ – Z275 Galvanized Coil
Q1: What does "Z275" mean?
A1: It indicates a zinc coating mass of 275 g/m² (total both sides).
Q2: How long does Z275 last?
A2: Typically 15–25 years under normal atmospheric conditions.
Q3: Can Z275 be painted or coated?
A3: Yes, it is widely used as a base for pre-painted steel (PPGI).
Q4: What is the difference between Z275 and Z120?
A4: Z275 has a thicker zinc layer, providing higher corrosion resistance than Z120.
Q5: Can Z275 be used in marine environments?
A5: Yes, but additional paint or protective coating is recommended for extreme salt exposure.
Q6: Do you provide slitting or cut-to-length services?
A6: Yes, coils can be slit or cut to length per customer requirements.
Q7: What are typical thickness and width tolerances?
A7: Thickness ±0.02 mm, width ±3 mm.
Q8: Is Z275 magnetic?
A8: Yes, it is ferromagnetic as it is carbon steel based.
Q9: Can you supply third-party inspection?
A9: Yes, SGS, BV, or TUV inspection is available before shipment.
Q10: What packaging is provided for export?
A10: Standard seaworthy coil packaging: protective paper + steel strap + wooden pallet.
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