Lead screen

The most vital specification is the Lead Equivalence (Pb), typically ranging from 0.5mmPb to 3.0mmPb depending on the energy level of the radiation source (e.g., X-ray vs. Gamma ray). You must also verify the core material integrity, ensuring the lead sheet is high-purity and free of voids. For mobile screens, ensure the stainless steel or powder-coated frame is robust enough to support the heavy lead weight, and prioritize medical-grade lockable casters for stability and ease of movement.

Buyers should prioritize suppliers who hold ISO 13485 (Medical Devices Quality Management) and CE Marking for the European market. For the US market, FDA registration is often required. Additionally, ensure the product meets IEC 60601-1-3 standards, which specifically cover radiation protection in medical electrical equipment. Always request a Radiation Protection Test Report from a certified third-party laboratory to validate the shielding effectiveness.

For Diagnostic X-ray rooms, a single-panel mobile screen with a lead glass observation window (minimum 1.5mmPb equivalence) is standard. In Interventional Radiology or Cath Labs, multi-panel folding screens are preferred to provide wrap-around protection for staff. For Industrial NDT (Non-Destructive Testing), screens often require higher lead equivalence (e.g., >2.0mmPb) and larger dimensions to shield high-energy industrial X-ray tubes.

The observation window must be made of High-Transparency Lead Glass. It is crucial to ensure the overlap between the lead glass and the lead sheet in the screen frame is at least 1cm to 2cm to prevent radiation leakage at the seams. Check for shatter-resistant coatings or tempered options if the screen will be moved frequently in high-traffic hospital environments.

Due to the extreme weight and brittleness of lead glass, the primary risk is structural damage or glass breakage. You must mandate reinforced wooden crate packaging (IPPC certified) with internal shock-absorbing foam. Because lead is high-density, shipping costs are calculated by weight, so it is often more economical to use Sea Freight (LCL or FCL) rather than air. Ensure the supplier provides a Material Safety Data Sheet (MSDS) if requested by the carrier, although lead metal is generally stable.

Utilize the Secured Trading services on Made-in-China.com to protect your payment until delivery is confirmed. Before full payment, hire a third-party inspection agency (like SGS or Intertek) to perform a 'Lead Leakage Test' using a dosimeter at the factory. This ensures there are no gaps in the internal lead lining that could compromise safety once the unit is in operation.

Focus on the purity of the lead used and the thickness of the stainless steel frame as negotiation points. Ask for a tiered pricing structure based on total lead weight. Since lead is a commodity, prices may fluctuate; try to lock in a price for 30 days during the negotiation phase. Additionally, negotiate for extra replacement casters or spare lead glass panels to be included in the bulk price to reduce long-term maintenance costs.

Verify the HS Code (typically 7019 or 9022) with your local customs broker to determine import duties. Be aware that some countries classify lead screens as Class I or Class II medical devices, requiring the importer to have a Medical Device Import License. Ensure all labels are in English (or the destination language) and clearly state the Lead Equivalence (Pb), as this is often checked during customs inspections.