GB/T 20445-2017Planed lumber (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 20445-2006 "planing material." The main technical changes compared with GB/T 20445-2006 are as follows.

--- Modify and add some terms and definitions;

--- Expand the planing material for tree species;

--- Adjust the planing material size deviation, increase and adjust some of the material indicators;

--- part of the description of the test method has been modified;

--- Part of the moisture content of the sample test method is modified, an increase of electrical measurement method.

1 Scope

This standard specifies the terms and definitions of planed material, technical requirements, test items and methods, inspection rules and packaging, marking, storage and transport.

This standard applies to the production of planed timber, processing and distribution areas.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 1931 wood moisture content determination method

GB/T 2828.1 Sampling procedures for sampling inspection - Part 1: Batch inspection sampling plan retrieved by acceptance quality limit (AQL)

GB/T 4822 sawn timber inspection

GB/T 4823 sawn timber defects

GB/T 11917 Timber process terminology

Determination of GB/T 19367 plywood

3 Terms and definitions

GB/T 4822, GB/T 4823 and GB/T 11917 as defined by the following terms and definitions apply to this document.