1996GB/T 2679.6-1996 Corrugating medium--Determination of the flat crush resistance after laboratory fluting
1981GB 2679.6-1981 Method for determination of flat crush strength of corrugated core
GB 2679.6-1981 Method for determination of flat crush strength of corrugated core was changed to GB/T 2679.6-1996 Corrugating medium--Determination of the flat crush resistance after laboratory fluting.