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LY/T 1793-2022: (logs for wood fiber)
Status: Valid LY/T 1793: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 1793-2022 | English | 129 |
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(logs for wood fiber)
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LY/T 1793-2022
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| LY/T 1793-2008 | English | 239 |
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Wood fiber log
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LY/T 1793-2008
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PDF similar to LY/T 1793-2022
Standard similar to LY/T 1793-2022 GB/T 6499 GB/T 6102.2 GB/T 11763 Basic data | Standard ID | LY/T 1793-2022 (LY/T1793-2022) | | Description (Translated English) | (logs for wood fiber) | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B32 | | Classification of International Standard | 79.040 | | Word Count Estimation | 5,597 | | Date of Issue | 2022-09-07 | | Date of Implementation | 2023-01-01 | | Issuing agency(ies) | State Forestry and Grassland Administration | LY/T 1793-2022: (logs for wood fiber)---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.
ICS 79.040
CCSB68
Forestry Industry Standard of the People's Republic of China
Replace LY/T 1793-2008
logs for wood fiber
Log for wood fiber
Released on 2022-09-07
2023-01-01 Implementation
Released by the State Forestry and Grassland Administration
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents"
drafting.
This document replaces LY/T 1793-2008 "Logs for Wood Fiber". Compared with LY/T 1793-2008, except for structural adjustment and editorial
Besides the changes, the main technical changes are as follows.
--- Changed the scope (see Chapter 1, Chapter 1 of the.2008 edition);
---Changed the use and tree species (see 4.1, 3.1 of the.2008 edition);
--- Dimensions and tolerances have been changed (see 4.2, 3.2 of the.2008 edition);
--- Changed the material index (see 4.3, 3.3 of the.2008 edition);
--- Changed the allowable limit of defects (see Table 1, Table 1 of the.2008 edition);
--- Changed the volume calculation (see Chapter 7, 4.2 of the.2008 edition).
Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed and managed by the National Timber Standardization Technical Committee (SAC/TC41).
This document was drafted by. Heilongjiang Academy of Forestry, Heilongjiang Institute of Wood Science, Shandong Agricultural University, Guangxi Zhuang Autonomous Region
Academy of Forestry Sciences, Guangxi Zhuang Autonomous Region State-owned Gaofeng Forest Farm, Guangxi Zhuang Autonomous Region State-owned Bobai Forest Farm, Guangxi Gaolin Forestry Co., Ltd.
Co., Ltd., Guangxi Gaofeng Wuzhou Wood-based Panel Co., Ltd., Guangxi Lelin Forestry Group Co., Ltd., Guangxi Yizhou Kaili Wood Industry Co., Ltd., Peony
Jianghengfeng Paper Co., Ltd., Shandong Xingang Enterprise Group Co., Ltd., Shandong Shengchang New Material Co., Ltd., Shandong Baishida Wood Co., Ltd.
Co., Ltd., Heilongjiang Forest Protection Research Institute.
The main drafters of this document. Zhang Hua, Zhang Jiabin, He Jincun, Liu Tao, Luo Dun, Teng Keyong, Chen Songwu, Xu Rui, Mao An, Cong Yan, Liu Xin, Zhang Shiqiu,
Lu Xiangyun, Huang Yusong, Huang Zhenhua, Li Ang, Ren Tuo, Li Xiaoyan.
The release status of previous versions of this document and the documents it replaces are as follows.
---First published as LY/T 1793-2008 in.2008;
--- This is the first revision.
logs for wood fiber
1 Scope
This document specifies the requirements, dimensional inspection, material evaluation, sampling method, volume calculation and product identification of logs for wood fiber.
This document is applicable to the production and circulation of logs for paper pulp and wood fiber.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document.
GB/T 144 log inspection
GB/T 155 Log defects
GB/T 4814 log volume table
GB/T 15787 log inspection terms
GB/T 17659.1 Sampling and Judgment Methods for Batch Inspection and Judgment of Sawn Logs Part 1.Batch Inspection and Sampling and Judgment Methods of Logs
LY/T 1511 Log product mark number printing
3 Terms and Definitions
The terms and definitions defined in GB/T 155 and GB/T 15787 apply to this document.
4 requirements
4.1 Tree species
4.1.1 Paper pulp
Suitable tree species for needles and broad leaves.
4.1.2 Wood fiber
All needle and broadleaf species.
4.2 Dimensions and tolerances
4.2.1 Check length
Since more than 0.5m. If the length of the inspection ruler is more than 2m, it shall be graded according to 0.2m; if the length of the inspection ruler is less than 2m, it shall be graded according to 0.1m. Grand Duke
The difference is 6-2cm.
4.2.2 Calibration diameter
Since above 4cm. If the diameter of the measuring ruler is less than 14cm, it shall be upgraded by 1cm. When the size is less than 1cm, it shall be upgraded by 0.5cm.
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