The ring pressure center plate is designed and produced according to national standards, and is a special test instrument for quantitative determination of standard samples of paper and cardboard. Applications A special testing instrument for quantitative determination of standard samples of paper and cardboard is a supporting tool for the DRK113 compression tester. Technical standard ISO 12192: "Paper and Paperboard-Compressive Strength-Ring Compression Method" GB/T 2679.8: "Determination of Ring Compressive Strength of Paper and Cardboard"; Product parameter Ring groove width: 0.15mm-1.00 mm, a total of 13 specifications, changing different center plates can test samples of different thicknesses Product configuration A set of center plate