This standard specifies a sampling plan and sampling procedures for quality inspection of electric welding machines and accessories. This standard applies to sampling inspections in product quality supervision, certification, type inspection and grading of mass-produced electric welding machines and their accessories. For the product quality evaluation and delivery inspection of electric welding machines and their accessories, the sampling methods specified in this standard can be referred to.
JB/T 5256-1991 history
1991JB/T 5256-1991 Method for inspecting and sampling welders