How to check the quality of stainless steel fasteners?

Inspection standards for stainless steel standard parts:

1. The inspection items mainly include three aspects: mechanical properties, dimensions and surface defects;

2. Corresponding technical conditions, product standards and other standards, the regulations on product surface defects are GB5779 in China, and the quality level standards in China follow the standards of JB/JQ1301; export products mainly follow the US ATSM, ANSI, UK BS, German DIN and Japanese JIS standards.

3. Advanced cartons are usually used for packaging and storage, and then packed into cartons or wooden boxes. Strictly follow the regulations.