Industrial X-ray films play a critical role in ensuring the integrity and quality of materials and components across various industries. Lucky Industrial X-ray Film L4 and L7 are engineered to meet the rigorous demands of modern non-destructive testing (NDT). Developed by Baoding Lekai International Ltd., these films combine advanced materials and cutting-edge technology to deliver exceptional performance. This article explores their features, technical specifications, applications, and the company's commitment to quality, while adhering to NIST standards for industrial precision.
Founded as a leader in the industrial radiography film sector, Baoding Lekai International Ltd. has established itself as a trusted provider of high-quality imaging solutions. The company's dedication to innovation and adherence to international standards ensures that its products meet the evolving needs of industries such as aerospace, automotive, and manufacturing. By leveraging advanced emulsion-making techniques and precision coating technologies, Baoding Lekai has positioned itself as a key player in the NDT film market.
Both L4 and L7 are designed with a double-sided coating on a blue polyester base, offering high-speed performance, fine grain, and high contrast. These characteristics enable the films to detect even the smallest defects in materials such as ferrous and non-ferrous metals, alloys, and other low-attenuation substances. The advanced emulsion structure ensures precise imaging, making them ideal for applications requiring detailed inspection of weld seams, components, and shaped materials.
| Size (Inch) | Size (mm) | Sheets / Box | Boxes / Ctn | Kg / Ctn | |||
|---|---|---|---|---|---|---|---|
| L4 & L7 | 80*300 | 80*300 | 100 | 10 | 11.5 | ||
| 80*360 | 80*360 | 100 | 10 | 13 | |||
| L4 & L7 | 12*15 | 305*381 | 50 | 5 | 16.5 | ||
| 14*17 | 356*432 | 50 | 5 | 19.8 | |||
Custom sizes and packaging options are available upon request, ensuring flexibility for diverse industrial needs.
The L4 and L7 films are widely used in industrial radiography for inspecting critical components. Their ability to capture high-resolution images makes them suitable for:
These films comply with NIST guidelines for precision and accuracy, ensuring reliable results in safety-critical applications.



Baoding Lekai's commitment to excellence is evident in its state-of-the-art manufacturing processes and rigorous quality control. The company's X-ray film products are designed to meet the highest standards of performance and reliability. By integrating innovative materials and technologies, Baoding Lekai ensures that its films deliver consistent results, even in challenging environments.
For industries requiring precise and reliable imaging solutions, Industrial X-ray Films L4 and L7 from Baoding Lekai International Ltd. offer a robust choice. Their advanced features, versatility, and compliance with NIST standards make them indispensable tools in modern NDT practices.
National Institute of Standards and Technology (NIST). (n.d.). Retrieved from https://www.nist.gov/
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