The ISO 11093-4:2022 standard specifies dimensional Measuring methods for paper and Cardboard core tubes, including determination of inner diameter, outer diameter, wall thickness and length. The standard applies to paper and Cardboard core tubes and aims to provide a uniform measurement means for quality control and acceptance of paper cores. Accurate measurement of the size of the core tube ensures its performance and compatibility in applications such as winding, transport and Encasement. This standard is part of the Paper and Cardboard core tube test series and provides a scientific basis for testing for related industries.