Description
Hot-Dipped Galvanized Steel Coil Z275 — Specifications, Pricing & Applications
Answer: Sino East Steel’s hot dipped galvanized steel coil Z275 features a 275g/m² double-side zinc coating per JIS G3302/EN 10346 standards. FOB Tianjin price ranges from $620 to $850 per metric ton, depending on thickness (0.15mm–3.2mm), width, and order volume. Z275 galvanized coils are the industry standard for roofing sheets, construction framing, appliance panels, and automotive body parts requiring superior corrosion resistance.
Z275 Zinc Coating — What You Need to Know
Z275 designation means the coil has a minimum 275 grams of zinc per square meter measured by triple-spot test (double-side total), compliant with EN 10346 and JIS G3302. This coating weight provides approximately 20–30 years of corrosion protection in normal atmospheric conditions, making it the preferred specification for outdoor construction applications. For more aggressive environments (coastal, industrial), Z350 or Z450 coatings are available upon request.
Standard Specification Table — Hot-Dipped Galvanized Steel Coil Z275
| Specification | Standard Grade | Full Hard / Commercial |
|---|---|---|
| Standard | JIS G3302, EN 10346, ASTM A653, GB/T 2518 | All applicable |
| Grade | SGCC, DX51D, DX52D, S220GD–S350GD | SGCC, DX51D, S220GD+Z |
| Zinc Coating | Z275 (275g/m² double-side) | Z100–Z600 available |
| Thickness | 0.15mm – 3.2mm | Tolerance: ±0.02mm |
| Width | 550mm – 1,500mm | Custom slitting available |
| Coil ID | 508mm / 610mm | Per customer requirement |
| Coil Weight | 3–8 MT | Custom weight available |
| Surface | Regular / Mini / Zero Spangle | Chromated, oiled, anti-fingerprint |
| Application | Roofing, construction, appliance, automotive, fabrication | Indoor & outdoor use |
Z275 coating test: minimum 275g/m² per triple-spot test per EN 10346. Single-spot minimum: 235g/m². MTC 3.1 certificate provided with every shipment.
Applications of Hot-Dipped Galvanized Steel Coil Z275
| Industry | Application | Recommended Specification |
|---|---|---|
| Construction | Roofing sheets, wall panels, purlins, decking, corrugated sheets | Z275, 0.3–0.8mm, regular spangle |
| Home Appliances | Washing machine panels, refrigerator bodies, air conditioner housings | Z275, 0.4–1.0mm, zero spangle |
| Automotive | Body panels, chassis components, underbody parts | Z275, 0.6–1.5mm, zero/mini spangle |
| General Fabrication | Steel silos, containers, HVAC ducts, cable trays, fencing | Z275, 0.5–2.0mm, regular spangle |
| Roll-Forming Products | Door frames, window frames, steel studs, tracks, C/Z purlins | Z275, 0.6–1.5mm, regular/mini spangle |
FOB Price Reference — Z275 Galvanized Steel Coil (July 2026)
| Thickness | Width | Weight / Linear Meter | Est. FOB Price / MT | Approx. MT per 20GP (25T) |
|---|---|---|---|---|
| 0.20mm | 1000mm | 1.57 kg/m | $780–850 | ~25 MT (12 coils) |
| 0.30mm | 1000mm | 2.36 kg/m | $740–800 | ~25 MT (10 coils) |
| 0.40mm | 1250mm | 3.93 kg/m | $720–770 | ~25 MT (8 coils) |
| 0.50mm | 1250mm | 4.91 kg/m | $690–740 | ~25 MT (7 coils) |
| 0.60mm | 1250mm | 5.89 kg/m | $670–720 | ~25 MT (6 coils) |
| 0.80mm | 1500mm | 9.42 kg/m | $650–690 | ~25 MT (5 coils) |
| 1.00mm | 1500mm | 11.78 kg/m | $640–670 | ~25 MT (4 coils) |
| 1.50mm | 1500mm | 17.66 kg/m | $620–660 | ~25 MT (3 coils) |
Prices indicative FOB Tianjin as of July 2026. Subject to steel billet market fluctuation and order quantity. Bulk orders over 100 MT receive negotiated contract pricing. Contact us for a firm quotation with current mill rates.
Why Choose Sino East Steel for Z275 Galvanized Steel Coil
- Mill-direct pricing: Our 60,000 sqm Tianjin factory produces hot-dipped galvanized coils on continuous galvanizing lines (CGL), eliminating middlemen and ensuring competitive FOB prices.
- Consistent Z275 coating: In-line zinc coating weight gauge ensures every coil meets the Z275 specification (275g/m² per triple-spot test). We provide full MTC 3.1 certification with every shipment.
- Flexible specifications: Custom thickness from 0.15mm to 3.2mm, width from 550mm to 1,500mm, spangle options (regular, mini, zero), and surface treatment (chromated, oiled, anti-fingerprint).
- Container consolidation: We optimize coil weight for efficient container loading. A 20GP container typically loads 4–12 coils (25 MT total), minimizing freight cost per ton.
- Global export experience: Regular shipments to Southeast Asia, Middle East, Africa, and South America. Familiar with international documentation requirements including MTC 3.1, Form E, fumigation certificates, and third-party inspection coordination.
Frequently Asked Questions — Hot-Dipped Galvanized Steel Coil Z275
Q1: What does Z275 mean in galvanized steel coil?
A: Z275 means the galvanized steel coil has a minimum 275 grams of zinc coating per square meter (total both sides) when tested by triple-spot method per EN 10346 or JIS G3302. This is equivalent to approximately 20μm zinc thickness per side. Z275 is the industry standard for outdoor construction applications, providing 20–30 years of corrosion protection in normal environments.
Q2: What is the current FOB price of Z275 hot-dipped galvanized steel coil from China?
A: Sino East Steel’s FOB Tianjin price for hot dipped galvanized steel coil Z275 ranges from $620 to $850 per metric ton as of July 2026. Thinner gauges (0.15–0.3mm) are priced at the higher end ($740–850/MT) due to higher processing cost per ton. Thicker gauges (1.0–3.2mm) are priced at $620–690/MT. Bulk orders over 100 MT receive negotiated contract pricing. Contact [email protected] or WhatsApp +86 186 220 88833 for the latest quotation with your specific thickness and quantity requirements.
Q3: What is the difference between Z275 and Z100/Z180/Z350 galvanized coating?
A: The zinc coating weight directly affects corrosion resistance and service life. Z100 (100g/m²) is suitable for indoor use only (5–10 years). Z180 (180g/m²) is for semi-exposed applications (10–15 years). Z275 (275g/m²) is for outdoor structural use (20–30 years). Z350 (350g/m²) is for coastal or industrial environments (30+ years). For most construction and roofing applications, Z275 is the optimal balance of cost and corrosion protection.
Q4: Can I order Z275 galvanized steel coil with custom width slitting?
A: Yes. Sino East Steel provides precision slitting services for Z275 galvanized coils. Standard master coil width is 1,000mm–1,500mm. We can slit to your required width from 30mm to 1,250mm with a tolerance of ±0.1mm. Minimum slit width depends on thickness. Slitting adds approximately $8–15/MT to the base price. Please specify your required width when requesting a quotation.
Q5: What documents and testing do you provide with Z275 galvanized steel coil orders?
A: Every Z275 coil shipment includes: Mill Test Certificate (MTC 3.1 per EN 10204) with chemical composition, mechanical properties (yield strength, tensile strength, elongation), zinc coating weight (triple-spot test), and dimensional report. Additional documents: Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin. Optional: Form E (ASEAN-China FTA), third-party inspection (SGS/BV/Intertek at $300–500 per inspection), and fumigation certificate for wood pallets.
