Lead glass windows price manufacturers

When sourcing lead glass, the most critical factor is the Lead Equivalent (Pb levels), typically ranging from 0.5mm to 3.0mm Pb for standard medical use. You must verify the glass density, which should ideally be around 4.36 g/cm³ to 5.2 g/cm³ to ensure effective radiation shielding. Additionally, check the Light Transmission rate; high-quality lead glass should offer over 85% transparency to ensure clear visibility for technicians. Price is heavily influenced by the thickness (usually 10mm to 20mm) and the purity of the lead oxide content.

To ensure safety and legal importation, the product must meet IEC 61331-2:2014 (Protective devices against diagnostic medical X-radiation). For the US market, FDA registration is often required, while the European market necessitates CE Marking and adherence to EN 61331 standards. Always request a Radiation Shielding Test Report from a third-party laboratory to validate that the glass provides the stated protective lead equivalence.

The application dictates the cost: CT rooms and X-ray rooms typically require 2.0mm Pb equivalence, whereas PET-CT or Gamma Knife rooms may require much thicker glass (3.0mm Pb or higher), significantly increasing the price. For industrial NDT (Non-Destructive Testing), the glass must be even more robust. Buyers should also consider if they need custom-sized frames (Lead-lined telescopic frames), as integrated window units are more expensive but ensure no radiation leakage at the edges.

Inspect the glass for bubbles, inclusions, or scratches, as these can compromise shielding integrity and visibility. High-quality lead glass should have a pale yellow tint (due to high lead content) but must remain perfectly clear without distortion. Check for edge finishing; beveled or polished edges reduce the risk of cracking during installation. Ensure the protective film is intact to prevent moisture-induced 'fogging' or oxidation during transit.

The greatest risk is breakage due to the extreme weight and brittleness of the glass. You must mandate heavy-duty fumigated wooden crate packaging with internal shock-absorbing foam and 'Fragile' labeling. Because lead glass is susceptible to acidic corrosion and oxidation (staining), ensure the supplier uses vacuum sealing or moisture-proof desiccant inside the crates. For shipping to countries with strict environmental laws, ensure the Lead Content Declaration is included in the shipping documents.

Lead glass is often priced by the square meter or per piece based on thickness. To get the best rates, consolidate your requirements to meet a higher weight bracket, as shipping costs per unit drop significantly with volume. Negotiate for tiered pricing (e.g., 5-10 units vs. 50+ units). For first-time buyers, request a small sample piece (e.g., 100x100mm) to test lead equivalence locally before committing to a full-size window order.

Always use Secured Trading Services provided by Made-in-China.com to ensure payment is only released after proof of shipment. For large orders, insist on a Pre-shipment Inspection (PSI) by a third party like SGS or Intertek to verify the Pb equivalence and dimensions match the Proforma Invoice. Ensure the contract includes a quality guarantee clause covering oxidation or 'clouding' that might appear within the first 6 months of use.

Lead glass is exceptionally heavy; therefore, Sea Freight (LCL or FCL) is the most economically feasible method. If using Air Freight for urgent medical projects, be prepared for high surcharges due to the density of the cargo. Ensure the supplier provides a Detailed Packing List specifying the net and gross weight of each crate to avoid customs delays or unexpected handling fees at the destination port.