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GB/T 155-2017 English PDF

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GB/T 155-2017: Defects in logs
Status: Valid

GB/T 155: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 155-2017English519 Add to Cart 5 days [Need to translate] Defects in logs Valid GB/T 155-2017
GB/T 155-2006EnglishRFQ ASK 5 days [Need to translate] Defects in logs Obsolete GB/T 155-2006
GB/T 155-1995EnglishRFQ ASK 6 days [Need to translate] Defects in logs Obsolete GB/T 155-1995
GB 155.1-1984English199 Add to Cart 2 days [Need to translate] Coniferous woods--Defects--Classification Obsolete GB 155.1-1984

PDF similar to GB/T 155-2017


Standard similar to GB/T 155-2017

GB/T 18107   LY/T 2407   LY/T 1184   GB/T 143   GB 154   

Basic data

Standard ID GB/T 155-2017 (GB/T155-2017)
Description (Translated English) Defects in logs
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard B68
Classification of International Standard 79.040
Word Count Estimation 26,277
Date of Issue 2017-12-29
Date of Implementation 2018-07-01
Older Standard (superseded by this standard) GB/T 155-2006
Regulation (derived from) National Standards Bulletin 2017 No. 32
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 155-2017: Defects in logs

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Defects in logs ICS 79.040 B68 National Standards of People's Republic of China Replacing GB/T 155-2006 Log defects 2017-12-29 Posted 2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Categories 11 Appendix A (informative) Wood defects on the material 14 Index 18

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 155-2006 "wood defects." Compared with GB/T 155-2006, the main technical changes are as follows. --- The following terms and definitions have been added. Ring festival, loose section, cluster festival, wheel crack, arc crack, chaos pattern, fungus discoloration, white rot, brown rot, soft Rot, chisel wormhole, wear and fat harvesting. --- Modify, add the terms of the original standard inaccurate or improper interpretation of the terms and definitions. Asphyxia wood, bark stripping, living Festival, dead section, leakage Festival, Surface Festival, Hidden Festival, End crack, Single crack, Ring crack, Long crack, Freeze crack and Shock crack, Penetrating crack, Root hypertrophy, Pocket, Sharpening, Twist Turn the grain, stress wood, should be pressed wood, should pull wood, double heart or heartwood, tree bag, tree tumor, false heartwood, containing sapwood, heartwood discoloration and streaks, Sapwood discoloration, sapwood stains, sapwood decay, heartwood decay, insect damage, bird's eye, mechanical damage, sawing, pumping heart, dry defects, wood Structural defects, defects and injuries caused by fungi. --- Removed the original standard in the following terms and definitions. Visible defects, lobed, split, surface pest, shallow pest, deep pest, tree Injured, torn and cut. --- Modify some logs defects in English Notes. --- Classification of defects has been adjusted knot according to the level of students, materials, growth sites and distribution of the classification; cracks into the crack and Rift, ring cracking and arc cracking included in the split; the tree bag from the dry defects adjusted to the structural defects of wood, and include random pattern In; fungal defects caused by fungal discoloration and decay into two categories, fungal discoloration of asphyxia browning in the sapwood discoloration, rot Rotten increase in accordance with the type and nature of divided into white rot, brown rot and soft rot; injury increased chisel hole; mechanical injury increased fat harvest injury, And the wind folding wood redraw into a category. --- Remove the test and calculation methods. --- Remove GB/T 155-2006 Appendix A, Appendix B. Added informative Appendix A. This standard proposed by the State Forestry Administration. This standard by the National Wood Standardization Technical Committee (SAC/TC41) centralized. This standard was drafted unit. Northeast Forestry University, Forestry Research Institute of Liaoning Province, Heilongjiang Province Tonghe Forestry Bureau, Jilin, China Forest Industry Group Co., Ltd., Qingdao Agricultural University, Harbin Forestry Bureau. The main drafters of this standard. Shen Jun, Wang Jingxian, Zhang Hongzhao, Liu Yu, Du Chao, Zhao Yang, Yu Changyong, Cui Xiaolei, Zhang Guoxin. This standard replaces the standards previously issued as. --- GB/T 155.1 ~ 155.3-1984; --- GB/T 4823.1 ~ 4823.3-1984; --- GB/T 155-1995, GB/T 155-2006. Log defects

1 Scope

This standard specifies the terms and definitions of conifer and broadleaf wood defects, classification. This standard applies to softwood and hardwood logs. The original reference to the implementation.

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 11917 Timber process terminology GB/T 15787 logs inspection terms

3 Terms and definitions

GB/T 11917, GB/T 15787 and defined by the following terms and definitions apply to this document. 3.1 Knot knot Branches contained in the trunk or main branch of the xylem. 3.1.1 according to the degree of staging is divided into live and dead section 3.1.1.1 Liveknot; intergrownknot The knot formed by the live branches of trees, knot growth wheel and the surrounding wood closely linked, hard texture, structure normal. 3.1.1.2 Dead section deadknot; encasedknot The knot formed by withered branches of trees, the knot growth wheel detached or partially detached from the surrounding wood. 3.1.2 According to the material is divided into healthy section, decay section and leakage section 3.1.2.1 Sound festival soundknot The knot material is intact, no decadent phenomenon. 3.1.2.2 Decayedknot The knot itself has been decadent, but did not penetrate the trunk, the wood around them intact. 3.1.2.3 Tolerance seriouslydecayedknot Knot not only itself has been decadent, but also deep inside the trunk, causing the decay of the internal material.

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