This part of GB/T 4802 stipulates the method of measuring the pilling performance and surface change of the fabric surface by the circular locus method.
GB/T 4802.1-2008 Referenced Document
GB/T 6529 Textiles.Standard atmospheres for conditioning and testing
GB/T 4802.1-2008 history
2008GB/T 4802.1-2008 Textiles.Determination of fabric propensity tosurface fuzzing and topilling.Part 1: Circular locus method
1997GB/T 4802.1-1997 Textiles--Assessing the rate of pilling of fabrics--Circular locus method