GB/T 15779-2017Log of peeled veneer (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 15779-2006 "peeling veneer logs." This standard compared with GB/T 15779-2006, the main technology The changes are as follows:

--- Modify the scope (see Chapter 1);

--- Modify the normative references (see Chapter 2);

--- Added terms and definitions (see Chapter 3);

--- Modify the tree species, the common tree species increased (see 4.1);

--- Relaxed inspection of the allowable limit diameter (see 4.2.2);

--- Relaxed any 1m material within a long range of live, dead section number (see Table 1);

--- Strict heartwood decadent, pumping heart allowable limit (see Table 1);

--- Stronger any 1m material within a long range allowed number of insect holes (see Table 1);

--- Tightened longitudinal crack, the outer limit of the skin (see Table 1);

--- Strict material length 4m below the allowable limit of bending (see Table 1);

--- Strengthened partial dry, the allowable limit of trauma (see Table 1). This standard proposed by the State Forestry Administration. This standard by the National Wood Standardization Technical Committee (SAC/TC41) centralized. This standard is drafted by: Heilongjiang Institute of Timber Science and Technology, Guilin Wood Products Quality Supervision and Inspection Station. The main drafters of this standard. Huang in China, Cui Yujia, Xu Bin, Zhao Xiu, Guan Shuai, Deng Xiaohua, Meng Xiangpeng, Wang Ziqi, Shi Lancui, Xu Rui, Cui Xiaolei, Liu Xiuyan, Cui Hongzhu, Zhang Jiabin, Lv Yuewei. This standard replaces the standards previously issued as.

--- GB/T 15779-1995, GB/T 15779-2006. Rotary cut veneer logs

1 Scope

GB/T 15779-2017 is the Chinese national standard on log of peeled veneer, in the field of wood technology. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 29 December 2017 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 July 2018. Classification: ICS 79.040, CCS B68. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the rotary veneer with the terms and definitions of wood, requirements, sampling methods, test methods, volume calculation and product signs. This standard applies to the production of plywood, veneer lumber and other purposes rotary veneer logs.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 144 logs inspection GB/T 155 logs defects

GB/T 4814 logs Volume Table

GB/T 15787 logs inspection terms

GB/T 17659.1 Saw Log Sampling, Determination of Part

3 Terms and definitions

GB/T 155 and GB/T 15787 defined terms and definitions apply to this document.