Corrugated Steel Sheets

Description

1. Product Overview

Corrugated Steel Sheets are high-tensile, cold-rolled or hot-dipped galvanized steel panels engineered for structural cladding, roofing, and load-bearing wall systems in industrial and infrastructure projects. Their primary industrial use spans large-scale construction, agricultural facilities, and modular warehousing, where dimensional stability and corrosion resistance are non-negotiable. The key value proposition is an optimized strength-to-weight ratio combined with lifecycle cost predictability — making them a strategically essential material for buyers seeking to reduce maintenance cycles and improve project ROI in harsh or high-humidity environments.

2. Key Specifications & Technical Characteristics

• Material composition: Commercial steel (ASTM A653 / JIS G3302) with G90, G115, or Z275 galvanized coating; optional AZ50 Aluzinc.

• Grade / yield strength: 230 MPa to 550 MPa (SS Grade 33 to 80 equivalent).

• Physical characteristics:

  • Thickness: 0.12 mm to 1.2 mm (26–10 gauge)

  • Profile pitch: 76 mm, 88 mm, or custom (trapezoidal T35, T55)

  • Height: 18 mm to 75 mm corrugation

  • Finish: Smooth, mini-rib, or embossed; standard color: unpainted galv or PVDF / polyester coat (RAL codes)

• Density: 7,850 kg/m³ (base steel)

• Packaging options:

  • Export seaworthy bundles (0.5–3 MT per unit)

  • Palletized with edge protectors + anti-rust VCI paper

  • Naked coil or cut-to-length (CTL) sheets on wooden skids

• Shelf life: >24 months in dry, covered storage; galvanized sheets show no white rust under recommended humidity (<60% RH)

3. Core Industrial Applications

• Primary industries: Prefab building construction, agricultural sheds, logistics centers, tunnel lining, and emergency shelter manufacturing.

• Operational use cases:

  • Roofing and vertical cladding for cement plants, grain silos, and cold storage

  • Formwork for cast-in-place concrete (reusable corrugated decking)

  • Crash barriers and acoustic panels on highway projects

• Performance advantage: Unlike flat sheets or fiber cement, corrugation provides 4× higher moment of inertia per unit mass, allowing longer spans without secondary purlins. Hot-dip galvanizing outperforms standard painted sheets in salt-spray tests by 800+ hours to red rust. Cost per square meter installed is typically 15–20% lower than aluminum or coated FRP over a 15-year horizon.

4. Competitive Advantages

• Quality consistency: Each batch verified via 3-point bend test, coating thickness gauge (magnetic), and salt spray (ASTM B117) — certificate of analysis (COA) included.

• Supply reliability: Multi-mill sourcing (Asia, GCC, Eastern Europe) with buffer stock at bonded warehouses; lead time 15–25 days ex-mill, 5–7 days ex-stock.

• Logistics capability: Direct container loading or break-bulk; rail-flatbed compatible crating for inland delivery.

• Price competitiveness: LME steel linkage with quarterly fixed pricing options for contract volumes (>500 MT/year).

• Environmental & technical support: 100% recyclable; EPD available upon request. CAD details + load-span tables provided by in-house structural engineers.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 20 metric tons (MT) – can be split across 2–3 profiles or coating types in one shipment.

• Loading capacity (MT per container):

  • 20-ft dry container: max 18 MT (sheet bundles only; pallets reduce to 16 MT)

  • 40-ft high cube container: max 24 MT (optimal for CTL sheets up to 3.6m length)

  • Note: Full vessel load (FCL) recommended for >20 MT; break-bulk vessel capacity: 250–500 MT per hatches.