1.1 This standard prescribes requirements of two types of grey yarns ( cotton and cotton blended with regenerated cellulosic fibres ) intended for use in automatic looms, powerlooms and handlooms.
1.2 This standard also prescribes the requirements for two-fold ( doubled ) yarns.
IS 171-1985 history
1985IS 171-1985 Specification for gray yarn blends of cotton and cotton regenerated cellulose fibers