Combination screws, we from production to delivery to customers. In this whole process, we all need to test the quality of the combined screws. This will ensure the quality of the combined screws. This will allow our customers to use our screws more confidently and boldly. Then, in the process of quality measurement of the combined screws, we generally encounter what are the bad quality problems! Next, we will briefly introduce Jinjia Hardware Xiaobian. For reference only. Usually as follows:
Poor molding
Eccentricity, imprints, offset heads, missing materials, headshots, etc.
Poor dental caries
Bad teeth, bad GO NOGO GAUGE, bad screws, bad nails, etc.
Inaccurate size
Length, outside diameter, bone diameter, angle, etc.
Bad plating
Black, color difference, etc.
Poor reliability
Bad salt spray test, poor torsion, poor hardness, poor hydrogen embrittlement, poor breakage, poor slide
Bad environment
Poor materials (containing harmful substances), poor plating, etc.
Then there is poor mixing, etc.