This standard specifies the method for determining the grain strength and elongation height of leather. This standard applies to various types of leather (light leather).
QB/T 2712-2005 history
2005QB/T 2712-2005 Leather-Physical and mechanical tests-Determination of distension and strength of grain-Ball burst test
1984QB/T 3812.7-1999 Leather.Determination of distension and strength of grain.Ball burst test