This document specifies the classification, technical requirements, inspection rules, marking, Encasement, transportation and storage of paper tube Cardboard, and describes the corresponding test methods. It is suitable for the production, inspection and sales of paperboard used in the manufacture of various types of paper tubes. The document cites a series of normative documents, including the taking and determination of paper and Cardboard samples, the determination of paper and Cardboard size and skewness, the determination of paper and Cardboard quantification, and the determination of paper and Cardboard thickness. In the classification part, paper tube Cardboard is divided into first-class products, first-class products and qualified products, and according to the width, it is divided into web paper and disc paper. In the technical requirements, the physical and chemical performance indicators of paper tube Cardboard shall comply with the provisions of Table 1. Terms and definitions are not defined in this document.