Quality control

Quality control

Here XULONG SPRING views quality control as a chain of process, from raw material inspection to final product inspection.
Raw material inspection is our first process, when steel reach our factory, our QC department will check it with our purchase requirements, usually hardness, tensile strength, wire diameter and outlook will be checked.
Before mass production and prototype production, there is a must process, our colleague of workshop have to make several samples to let QC test and confirm with signature, then mass production is allowed, this named first article inspection(FAI).
During production, our colleague of QC department will check the products according to their plan and record the testing data, this call during production inspection.
When springs are finished and before they are allowed to pack into warehouse, there is a final inspection by QC department.
All of these are base on scheduled process of ISO system, XULONG SPRING have been certificated IATF 16949 since 2015.