Float Glass

Description

1. Product Overview

Float Glass is a high-precision, flat soda-lime silicate glass sheet manufactured through the continuous floating of molten glass over a bath of molten tin, resulting in exceptional optical clarity and uniform thickness. It serves as the foundational substrate for architectural glazing, automotive windshields, mirrors, and high-end display screens. Its strategic value lies in delivering distortion-free transparency and dimensional consistency at scale, enabling downstream value-added processing (tempering, laminating, coating) with minimal material waste—a critical cost and performance lever for global industrial buyers.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Soda-lime-silica (SiO₂: 71–73%, Na₂O: 12–14%, CaO: 8–10%, MgO: 2–4%, trace Al₂O₃ + K₂O)

• Grade/Purity Standard: ASTM C1036 (Standard Specification for Flat Glass) / EN 572-2 compliant; iron content <0.1% (low-iron variant available for ultra-clear applications)

• Physical Characteristics:

  • Form: Rigid flat sheets

  • Color: Clear (greenish edge due to iron), ultra-clear (low-iron), tinted options (bronze, gray, green)

  • Thickness range: 1.0 mm – 25 mm (standard: 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 15 mm, 19 mm)

  • Sheet size: Maximum 6000 mm × 3210 mm; custom cut on request

  • Density: 2.5 g/cm³

  • Flatness tolerance: ≤ 0.1 mm per meter length (wave distortion < 0.05%)

• Optical Properties: Light transmittance ≈ 88–91% (clear); <1% haze

• Packaging Options: Interleaved paper or powder-coated interlayers; A-frames (vertically stacked) or seaworthy wooden crates (horizontal); edge protectors + anti-moisture film

• Shelf Life: Unlimited when stored vertically in dry, clean conditions (<60% RH) away from abrasives

3. Core Industrial Applications

• Architectural & Building Envelopes: Curtain walls, windows, balustrades, and interior partitions. Performs better than rolled plate glass due to zero optical distortion and consistent thickness, enabling seamless large-panel installation and lower breakage rates.

• Automotive Glazing: Windshields (after lamination), side/rear windows (after tempering). Superior surface flatness reduces optical refraction errors for driver safety and allows automated robotic handling in high-speed production lines.

• Solar Photovoltaics: Cover glass for PV modules (patterned tempered variant). Low-iron float glass achieves >91% transmission, directly increasing energy yield by 2–3% vs. standard glass.

• Mirror & Furniture Manufacturing: Silvering substrate and tabletop surfaces. Flawless back-surface quality ensures mirror image fidelity without “waviness” — reducing downstream coating rejection rates by up to 40%.

• Display & Electronics (ultra-clear grade): Protective covers for LCD/LED screens and touch panels. Ultra-low iron and bubble-free formulation eliminates color shift and light leakage.

4. Competitive Advantages

• Quality Consistency: Real-time laser flatness monitoring and automated edge deletion; thickness variation ≤ ±0.05 mm within the same batch — certified by ISO 9001:2024 and IATF 16949 for automotive supply chains.

• Supply Reliability: Redundant production lines across three continents with 50,000+ MT monthly capacity; 98.5% on-time-in-full (OTIF) delivery record over 24 months.

• Logistics Capability: Dedicated flatbed container loading protocols; pre-shipment third-party inspection optional (SGS, Bureau Veritas). Break-bulk and LCL available for smaller buyers.

• Price Competitiveness: Direct-from-furnace pricing eliminates trader markups; volume-tiered discounts (20 MT / 50 MT / 200 MT+ bands).

• Sustainability: Up to 32% post-industrial cullet (recycled glass) in batch recipe; lower carbon footprint per ton than regional competitors (verified by EPD). Waste heat recovery in annealing lehr.

• Technical Support: CAD-ready flatness maps, stress pattern simulation data, and glass handling guides included. Dedicated application engineers for downstream tempering/laminating yield improvement.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20MT (mixed thicknesses/sizes allowed; up to 4 SKUs per container)

• Loading Capacity:

  • 20-ft container: Max 20 MT (depending on thickness and crate dimensions)

  • 40-ft container: Max 26 MT

  • Special bulk flatbed trailer (road/rail): Up to 48 MT per shipment

• Lead Time: 15 days for standard clear glass (ex-works); 25 days for low-iron or tinted

• Incoterms supported: EXW, FOB, CIF, CFR, DDP (volume-dependent)

• Payment terms: LC at sight (standard) / 30% TT deposit + 70% against BL copy (approved buyers)