Lead glass sheet

The most critical specification is the Lead Equivalent (Pb Eq), which typically ranges from 0.5mm to 4.0mm depending on the radiation energy levels (kV). You must also verify the Light Transmittance, which should be above 85% to ensure clear visibility for medical staff. Additionally, ensure the glass has a high density (typically 4.36 g/cm³ or higher) to provide adequate protection while maintaining a manageable thickness.

For global trade, lead glass must comply with IEC 61331-2:2014 (Protective devices against diagnostic medical X-radiation). In the European market, CE Marking is mandatory, while the US market requires FDA registration for medical devices. You should also request ISO 13485 certification from the manufacturer to ensure their quality management system meets medical industry requirements.

For Diagnostic X-ray rooms (80-120kV), a lead equivalence of 2.0mm Pb is standard. However, for CT rooms or PET scans, thicker sheets (up to 3.0mm-4.0mm Pb) are required due to higher energy levels. When ordering, specify custom cutting requirements, as lead glass is brittle and difficult to resize on-site without specialized equipment like water-jet cutting.

Lead glass is softer and more prone to scratching than standard silica glass due to its high lead oxide content. It is also sensitive to moisture and acid; exposure to high humidity can cause 'sweating' or discoloration (iridescence). Ensure the supplier provides protective laminations or advises on using neutral cleaners to maintain long-term optical clarity.

The primary risk is breakage due to the high weight and brittleness of the material. You must insist on fumigated wooden crate packaging with internal shock-absorbing foam and moisture-proof vacuum sealing. For high-value orders, it is highly recommended to use Made-in-China.com's Secured Trading services and purchase all-risk marine insurance that specifically covers 'breakage'.

Request a Third-Party Inspection Report (such as from SGS or TUV) before the balance payment is made. Specifically, ask for a Radiation Shielding Test to confirm the actual lead equivalence matches the datasheet. Negotiate a quality guarantee period of at least 2-5 years against spontaneous discoloration or oxidation, which are common defects in low-quality lead glass.

Due to the extreme density and weight of lead glass, shipping costs are calculated by weight rather than volume. Ensure your warehouse has heavy-duty lifting equipment (forklifts/cranes) capable of handling crates that can exceed 500kg. For small batches, LCL (Less than Container Load) is possible, but ensure the crate is placed on the bottom of the stack to prevent crushing.

Prioritize Audited Suppliers who have undergone on-site verification. Check their Business License to ensure their scope includes 'radiation protection materials.' Review their export history to your specific region to ensure they are familiar with your local customs documentation, such as Certificate of Origin or specific medical import permits.