Lead door

The most critical factor is the Lead Equivalence (Pb thickness), typically ranging from 0.5mm to 4.0mm depending on the radiation source (X-ray, CT, or PET). You must ensure the internal lead sheet is seamless to prevent radiation leakage. Additionally, the core material should be high-density composite or solid wood, and the frame must be lead-lined to provide continuous shielding at the door-to-wall interface.

For medical and industrial use, products should ideally comply with IEC 61331-1 (Protective devices against diagnostic medical X-radiation). In the US market, NCRP (National Council on Radiation Protection) reports are the benchmark, while the EU requires CE marking and adherence to EN 12453 for motorized doors. Always request a Radiation Protection Test Report from a third-party laboratory.

The choice depends on the usage frequency and hygiene requirements. Automatic sliding doors are preferred for high-traffic CT rooms and operating theaters to ensure hands-free operation and maintain sterility. They should feature infrared safety sensors and a power-off manual override. Manual swing doors are more cost-effective for low-traffic areas like dental X-ray rooms but require heavy-duty reinforced hinges to support the significant weight of the lead.

Lead doors are essential in Medical Imaging Departments (X-ray, CT, MRI, PET-CT), Radiotherapy rooms, Dental clinics, and Industrial Non-Destructive Testing (NDT) labs. For specialized environments like MRI, ensure the door is non-magnetic (RF shielding) rather than just lead-lined.

Request a real-time video inspection of the production line and ask the supplier to use a Lead Thickness Gauge on camera. Since lead is expensive, some dishonest suppliers may use thinner sheets than specified. For high-value orders, sourcing through Made-in-China.com allows you to utilize secured payment services and third-party inspection options to mitigate quality risks.

Lead doors are extremely heavy and susceptible to deformation. They must be packed in reinforced fumigated wooden crates with internal shock-absorbing foam. Ensure the shipping terms (Incoterms) are clear; due to the weight, CIF or DAP might be complex, so many professional buyers prefer FOB to maintain control over the heavy-lift logistics provider.

Pricing is heavily influenced by the current market price of lead ingots. Negotiate a volume-based discount (typically 5-10% for orders over 20 units) but be wary of prices significantly below market average, as this often indicates recycled lead with impurities or insufficient shielding. Ask for a price breakdown of the lead content versus the door hardware.

Always use Letter of Credit (L/C) or Escrow services provided by reputable platforms like Made-in-China.com for large transactions. Never transfer full payment upfront; a standard 30% deposit and 70% balance against the Bill of Lading (B/L) is the industry norm. Ensure the Proforma Invoice (PI) explicitly states the Lead Equivalence and Warranty Period (minimum 2 years).