GB/T 3294-2018 in English

Background and significance of standard revision

As the core foundation of footwear manufacturing, the dimensional accuracy of shoe lasts directly affects the comfort and fit of finished shoes. GB/T 3294—2018 "Shoe Last Size Detection Method" is a comprehensive revision of the original standard GB/T 3294—1998, which mainly optimizes and supplements the measurement methods of key parameters such as the length, width, height, circumference and sway of shoe lasts. With the advancement of footwear manufacturing technology and the improvement of consumers' requirements for shoe comfort, the new standard has put forward higher requirements in terms of detection accuracy, equipment selection and data processing.

New and modified technical content

Analysis of core detection steps

Implementation Suggestions

Equipment Selection:

• Give priority to high-precision instruments, such as vernier calipers (accuracy 0.02mm) and tripod parallel gauges.
• Ensure that the calibration cycle of the newly added equipment is consistent with the original equipment to avoid the measurement results being affected by equipment errors.

Staff Training:

• Operators need to receive professional training and be familiar with the various test steps and instrument usage specifications.
• Regular refresher training is recommended to ensure that technical proficiency is synchronized with standard updates.

Data Processing:

• Record the measurement results strictly in the format specified in 7.3 and retain one decimal place.
• Establish an electronic database to facilitate subsequent data analysis and comparative research.