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Position: Chinese Standard in English/LY/T 1738-2020
LY/T 1738-2020   Plywood for parquet (English Version)
Standard No.: LY/T 1738-2020 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 5000 words Price(USD):150.0 remind me the price change

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Implemented on:2020-10-1 Delivery: via email in 1 business day
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Standard No.: LY/T 1738-2020
English Name: Plywood for parquet
Chinese Name: 实木复合地板用胶合板
Chinese Classification: B70    Artificial board
Professional Classification: LY    Professional Standard - Forestry
ICS Classification: 79.060.10 79.060.10    Plywood 79.060.10
Issued by: National Forestry and Grassland Administration
Issued on: 2020-03-30
Implemented on: 2020-10-1
Status: valid
Superseding:LY/T 1738-2008 Plywood for solid wood composite flooring
Language: English
File Format: PDF
Word Count: 5000 words
Price(USD): 150.0
Delivery: via email in 1 business day
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard is a revision of LY/T 1738-2008 Plywood for solid wood composite flooring. The following main technical changes have been made with respect to LY/T 1738-2008: ——The definition of no-added formaldehyde plywood for parquet is added; ——The classification is modified. ——The requirements for specification and dimension deviation are modified; ——The requirements for pin knots, live knots, abnormal structure of wood and other defects in the appearance quality are deleted; ——The bonding strength requirement in the physical and chemical properties is deleted; ——The inspection method and requirements of formaldehyde emission are modified; ——The size and quantity of dimensional stability test pieces; ——The schematic diagram for specimen sawing is added; ——The sampling plan for appearance quality inspection and specification and dimension deviation inspection is added; ——The identification, packaging and transportation requirements are modified. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights. This standard was proposed by and is under the jurisdiction of SAC/TC 198 National Technical Committee on Wood-based Panels of Standardization Administration of China. The previous edition of this standard is as follows: ——LY/T 1738-2008. Plywood for parquet 1 Scope This standard specifies the classification, requirements, inspection methods, inspection rules, and identification, packaging, transportation and storage of plywood for parquet. This standard is applicable to plywood for parquet. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 9846-2015 Plywood for general use GB/T 17657-2013 Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels GB/T 18103-2013 Engineered wood flooring GB/T 18259-2018 Terminology for wood-based panels and their surface decoration GB 18580 Indoor decorating and refurbishing materials - Limit of formaldehyde emission of wood-based panels and finishing products GB/T 19367-2009 Wood-based panels - Determination of dimensions of panels 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 18259-2018 and the following apply. 3.1 plywood for parquet plywood for parquet made by veneer assembly and gluing 3.2 no-added formaldehyde plywood for parquet plywood for parquet without adding any adhesive or auxiliary agent containing formaldehyde component in the preparation process   4 Classification 4.1 By the type of adhesive: a) no-added formaldehyde plywood for parquet; b) added formaldehyde plywood for parquet. 4.2 By the service environment: a) Type I plywood: used outdoors; b) Type II plywood: used in humid conditions. 5 Requirements 5.1 Specification and dimension deviation The specification and dimension deviation of plywood for parquet shall be in accordance with those specified in Table 1. Table 1 Specification and dimension deviation of plywood for parquet Item Requirement Thickness deviation The difference between the average thickness da and the nominal thickness dn is 0mm~0.3mm; The difference between the maximum dmax and the minimum dmin of the inner thickness of the plywood shall not be greater than 0.3mm. Length deviation The absolute value of the difference between the nominal length ln and the average length la shall not be greater than 5mm, and negative deviation is not allowed. Width deviation The absolute value of the difference between the nominal width wn and the average width wa shall not be greater than 3mm, and negative deviation is not allowed. Verticality deviation ≤ 1mm/m Edge straightness deviation ≤ 1mm/m Warping degree ≤ 0.75% 5.2 Appearance quality The appearance quality of plywood for parquet shall be in accordance with those specified in Table 2.
Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Classification 5 Requirements 6 Inspection methods 7 Inspection rules 8 Identification, packaging, transportation and storage
Referred in LY/T 1738-2020:
*GB/T 9846.2-2004 Plywood - Part2: Tolerances on dimensions
*GB/T 9846.3-2004 Plywood-Part 3:General specification for plywood for general use
*GB/T 9846.4-2004 Plywood - Part4: Specification for classification by appearance of plywood for general use
*GB/T 9846.5-2004 Plywood - Part 5: Inspection codes of plywood for general use
*GB/T 9846.6-2004 Plywood - Part 6: Marking, tag, packaging of plywood for general use
*GB/T 17657-1999 Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels
*GB/T 18103-2000 Parquet
*GB/T 19367.1-2003 Wood-based panels-Determination of thickness,width and length of boards
*GB/T 19367.2-2003 Wood-based panels―Determination of squareness and straightness of boards
*GB/T 35590-2017 Information technology―General specification for portable digital equipments used power bank
*QB/T 1858-2004 Perfume and cologne
*HG/T 20592-2009 Stee1 Pipe F1anges (PN designated)
*GB 3565-2005 Safety requirements for bicycles
*GB/T 39335-2020 Information security technology—Guidance for personal information security impact assessment
*GA 374-2019 Burglary-resistant electronic locks
*GB/T 19001-2016 Quality management systems―Requirements
*GB 4943.1-2022 Audio/video,information and communication technology equipment—Part 1: Safety requirements
*GB 4806.7-2016 National Food Safety Standard - Food Contact Plastic Materials and Articles
*GB/T 35590-2017 Information technology―General specification for portable digital equipments used power bank
*GB 150-2011 Pressure Vessels (Collection GB150.1~150.4-2011)
*GB/T 5750-2006 Standard examination methods for drinking water
*JB/T 10391-2008 Specification for Yseries(IP44)three asynchronous motor (Frame size 80~355)
*GB 14880-2012 National Food Safety Standard for the Use of Nutritional Fortification Substances in Foods
*GB 9706.1-2020 Medical electrical equipment—Part 1: General requirements for basic safety and essential performance
Code of China
Standard
LY/T 1738-2020  Plywood for parquet (English Version)
Standard No.LY/T 1738-2020
Statusvalid
LanguageEnglish
File FormatPDF
Word Count5000 words
Price(USD)150.0
Implemented on2020-10-1
Deliveryvia email in 1 business day
Detail of LY/T 1738-2020
Standard No.
LY/T 1738-2020
English Name
Plywood for parquet
Chinese Name
实木复合地板用胶合板
Chinese Classification
B70
Professional Classification
LY
ICS Classification
Issued by
National Forestry and Grassland Administration
Issued on
2020-03-30
Implemented on
2020-10-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
LY/T 1738-2008 Plywood for solid wood composite flooring
Language
English
File Format
PDF
Word Count
5000 words
Price(USD)
150.0
Keywords
LY/T 1738-2020, LY 1738-2020, LYT 1738-2020, LY/T1738-2020, LY/T 1738, LY/T1738, LY1738-2020, LY 1738, LY1738, LYT1738-2020, LYT 1738, LYT1738
Introduction of LY/T 1738-2020
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard is a revision of LY/T 1738-2008 Plywood for solid wood composite flooring. The following main technical changes have been made with respect to LY/T 1738-2008: ——The definition of no-added formaldehyde plywood for parquet is added; ——The classification is modified. ——The requirements for specification and dimension deviation are modified; ——The requirements for pin knots, live knots, abnormal structure of wood and other defects in the appearance quality are deleted; ——The bonding strength requirement in the physical and chemical properties is deleted; ——The inspection method and requirements of formaldehyde emission are modified; ——The size and quantity of dimensional stability test pieces; ——The schematic diagram for specimen sawing is added; ——The sampling plan for appearance quality inspection and specification and dimension deviation inspection is added; ——The identification, packaging and transportation requirements are modified. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights. This standard was proposed by and is under the jurisdiction of SAC/TC 198 National Technical Committee on Wood-based Panels of Standardization Administration of China. The previous edition of this standard is as follows: ——LY/T 1738-2008. Plywood for parquet 1 Scope This standard specifies the classification, requirements, inspection methods, inspection rules, and identification, packaging, transportation and storage of plywood for parquet. This standard is applicable to plywood for parquet. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 9846-2015 Plywood for general use GB/T 17657-2013 Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels GB/T 18103-2013 Engineered wood flooring GB/T 18259-2018 Terminology for wood-based panels and their surface decoration GB 18580 Indoor decorating and refurbishing materials - Limit of formaldehyde emission of wood-based panels and finishing products GB/T 19367-2009 Wood-based panels - Determination of dimensions of panels 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 18259-2018 and the following apply. 3.1 plywood for parquet plywood for parquet made by veneer assembly and gluing 3.2 no-added formaldehyde plywood for parquet plywood for parquet without adding any adhesive or auxiliary agent containing formaldehyde component in the preparation process   4 Classification 4.1 By the type of adhesive: a) no-added formaldehyde plywood for parquet; b) added formaldehyde plywood for parquet. 4.2 By the service environment: a) Type I plywood: used outdoors; b) Type II plywood: used in humid conditions. 5 Requirements 5.1 Specification and dimension deviation The specification and dimension deviation of plywood for parquet shall be in accordance with those specified in Table 1. Table 1 Specification and dimension deviation of plywood for parquet Item Requirement Thickness deviation The difference between the average thickness da and the nominal thickness dn is 0mm~0.3mm; The difference between the maximum dmax and the minimum dmin of the inner thickness of the plywood shall not be greater than 0.3mm. Length deviation The absolute value of the difference between the nominal length ln and the average length la shall not be greater than 5mm, and negative deviation is not allowed. Width deviation The absolute value of the difference between the nominal width wn and the average width wa shall not be greater than 3mm, and negative deviation is not allowed. Verticality deviation ≤ 1mm/m Edge straightness deviation ≤ 1mm/m Warping degree ≤ 0.75% 5.2 Appearance quality The appearance quality of plywood for parquet shall be in accordance with those specified in Table 2.
Contents of LY/T 1738-2020
Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Classification 5 Requirements 6 Inspection methods 7 Inspection rules 8 Identification, packaging, transportation and storage
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