Inside China’s 14 ft Metal Roofing Price Game: Factory Notes, Real Specs, and What Buyers Miss

If you’re hunting for a dependable china 14 ft metal roofing price factory source, here’s the candid version from someone who’s sat in more coil yards than I’d care to admit. Prices are moving weekly, paint lines are busy, and everyone asks the same question: “What’s the real cost per panel?” Short answer: it hinges on coating mass, thickness, and how tightly your supplier holds tolerances (and yes, logistics still bites).

Product snapshot: EGI steel for 14 ft panels

Product: Price Electro Galvanized Iron Per KG (EGI Steel) from XD, Hebei. Factory office: Room 1017, Qicheng Building, No.210, ZhongHuanan Street, Qiaoxi District, Shijiazhuang, Hebei. It’s supplied as steel coil/sheet, cut-to-length to 14 ft (≈4.27 m) and then roll-formed. EGI is great where clean paintability, flatness, and precise coating control matter—many customers say the finish consistency beats regular GI for topcoat systems.

Specification highlights

Process flow and testing

Pickling → cold rolling → degreasing → electrolytic galvanizing → passivation → tension leveling → oiling → slitting/CTL (14 ft) → inspection → seaworthy packing. Tests: coating mass (ISO 1460), salt spray (ISO 9227/ASTM B117), bend test (ASTM E290), paint adhesion (ASTM D3359), mechanicals (ASTM A370). Typical lab note: Z60-class EGI with chromate passivation often clears 240–480 h neutral salt spray; paint systems push service life much longer, especially inland.

Price talk (how to estimate a 14 ft panel)

Rule-of-thumb mass = 7.85 × thickness(mm) kg/m². Example: 0.40 mm ≈ 3.14 kg/m². A 14 ft (4.27 m) × 0.914 m panel ≈ 3.90 m² → ≈ 12.3 kg. If coil price were, say, $1.00/kg FOB (illustrative only), one bare panel’s metal cost ≈ $12.3 before roll-forming, packaging, and freight. Reality swings with coating, currency, and MOQ. To be honest, locking a quarterly price window helps.

Where it’s used

• Cold storage and logistics roofs/walls (clean paint finish is a win)
• Container tops, modular cabins, site shelters
• Agricultural sheds; light industrial buildings; inland warehouses
• Coastal projects with robust paint systems and proper sealing

Advantages and what buyers like

Flatter sheets, tight gauge control, excellent paintability, and neat edge quality. Interestingly, many buyers say EGI resists underfilm corrosion better when topcoated, compared with lower-mass GI. Service life? Around 10–20 years inland with quality coatings; 5–12 years coastal, depending on design details and maintenance.

Vendor snapshot (real-world differences)

Customization checklist

• Cut-to-length: 14 ft standard or custom
• Profiles: trapezoidal, corrugated, concealed-fix
• Coating mass: match environment (e.g., 60–120 g/m²)
• Pre-paint systems: RAL per project, film thickness to spec
• Protective film, logo backer, palletization per export rules

Quick case notes

Coastal logistics hub (East China): 0.45 mm EGI, heavy-duty primer + PVDF topcoat; onsite salt fog was rough, but panels looked sharp after year one—maintenance team called out “easy recoat.” Inland ag sheds (Mid-Asia): 0.35 mm EGI, polyester topcoat; feedback said installation speed improved thanks to better flatness. Not scientific, but it tracks with lab results.

If you circle back for quotes, mention china 14 ft metal roofing price factory and request coating mass, CTL accuracy, and confirmed salt spray data in the same email—saves three days of back-and-forth.

Standards and references

1. ASTM A879/A879M – Electrolytic Zinc-Coated Steel Sheet
2. JIS G3313 – Electrolytic Zinc-Coated Steel Sheet
3. GB/T 2518 – Continuous Electrogalvanized Steel Sheet
4. ISO 9227 / ASTM B117 – Neutral Salt Spray Testing
5. ASTM D3359 – Paint Adhesion by Tape Test
6. ASTM A370 – Mechanical Testing of Steel Products