This standard specifies the test method for the thickness of the top of the carpet base. This standard applies to all carpets whose piles can be cut from the carpet base, but does not apply to carpets with changes in wall thickness or density, unless the changing areas can be tested separately.
QB/T 1555-2001 history
2001QB/T 1555-2001 Test method for pile thickness on carpet tufts
1970QB/T 1555-1992 Test method for pile thickness on carpet base