GB/T 33040-2016 in English

VALID

Identification method of heat-treated wood

Issued on:2016-10-13
Implemented on:2017-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 33040-2016
Document status:	VALID
Superseded by:	GB/T 31747-2026 Thermally modified wood
Superseded on:	2027-03-01
Title in English:	Identification method of heat-treated wood
Title in Chinese:	热处理木材鉴别方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2016-10-13
Implemented on:	2017-05-01
ICS Classification:	79.040-Wood, sawlogs and sawn timber
Chinese Classification:	B60-Basic standard and general method on forestry
Professional Classification:	GB-National Standard
Related Keywords:	heat-treated wood identification methods domestic heat-treated wood identification methods heat-treated wood wood quality identification heat-treated wood introduction professional interpretation
Related Topics:	Palladium carbon identification Method identification + two cen Glycoside identification method palladium identification Granularity processing method Granularity processing method method of identification Processing method Preprocessing hot wood Identification method Identification method party identification party difference Identification of Palladium Chromatographic method UV identification method GB 33040 Principle of UV identification gc identification method Identification method of heat treated wood identification method The principle of identification of anthracene glycosides Identification of anthracene glycosides Anthracene Glycoside Identification Principle A method of processing a material GBT33040 GB/T 33040-2016 UV identification method of pharmaceuticals Organofluorine identification principle ADA authentication value Commonly used methods to identify drugs How to identify phenol How to identify reconstituted milk by color difference method Basic methods of heat treatment Drug identification method requirements Beeswax identification method General identification methods of aztreonam How to identify magnesium carbonate Physical and chemical identification methods of licorice What are the commonly used heat treatment methods? Summary of amino acid identification methods How to identify silicotungstic acid The simplest way to identify aluminum Main methods of heat treatment Amino acid identification method Commonly used heat treatment methods Identification methods drug analysis How to identify crystal phases Commonly used methods for drug identification Methods for handling contaminated equipment Chemical treatment UV identification method Commonly used heat treatment methods How to identify recombinants Physical and chemical properties identification methods Plasmid pre-heating treatment method Qualitative identification method of isoniazid Heat treatment method How to identify sodium salt Arginine identification method Standard number for export wood heat treatment Methods for preprocessing Chinese medicinal materials How to identify atropine Microbial identification methods Identification methodsPhysical and chemical identificationChemical identificationMicroscopic identification How to identify isoniazid Amino identification method How to identify atropine Ambroxol chemical identification Material heat treatment methods Raster decryption identification method How to identify sponges Chemical drug identification methods How to identify alkyl halides How to identify naphthoquinone Iron ion identification method Common heat treatment methods mainly include How to identify beeswax Pharmacopoeial methods for identification of bromides Several methods of heat treatment How to identify salicylic acid The method and principle of UV identification How to identify propofol Urea identification method Four common heat treatment methods How to identify ibuprofen chemically How to identify fluoride How to identify chemicals Amino identification method Commonly used heat treatment methods include Differences in the principles of each method of material analysis Exclusive identification tests and drug identification methods Common heat treatment methods General identification methods for drug identification How to identify naproxen Histidine identification method How to identify dandelions Physical and chemical identification methods of Qinpi Medicinal Chemistry Identification Methods Organofluoride identification method What are the three methods of heat treatment? Experimental method for identification of benzoic acid How to identify ammonium bromide How to identify chemical drugs Several processing methods of heat treatment Amino Acid Identification Method Development Amino acid pharmacopoeia identification method Glycerol identification method How to identify Pulan How to identify silver ions How to identify phenol Common methods for drug identification Establishment of identification analysis method Drug identification methods Identification method of cuvette Identification of Cardiac Glycosides Heat treatment methods include rest

《GB/T 33040-2016热处理木材鉴别方法》由TC41（全国木材标准化技术委员会）归口，TC41SC1（全国木材标准化技术委员会基础标准分会）执行，主管部门为国家林业和草原局。

Introduction

Professional interpretation of heat-treated wood identification methods

1. Background of standard formulation and analysis of technological evolution

As a new type of wood modification technology, heat-treated wood is mainly based on carbonization treatment under high temperature and low oxygen environment to give wood higher stability and durability. The introduction of GB/T33040-2016 standard fills the gap in domestic heat-treated wood identification methods and provides a unified technical specification for the industry.

With the rapid development of the wood industry and technological upgrading, the application scope of heat-treated wood continues to expand, from interior decoration to outdoor construction, and its market demand continues to grow. The formulation of this standard not only meets the industry's demand for standardized testing, but also provides a basis for wood quality identification in international trade.

2. Comparison and analysis of standard frameworks

Standard dimensions	GB/T33040—2016	Comparison with international standards
Term definitions	Clearly define professional terms such as heat-treated wood and hygroscopic equilibrium moisture content	Align with international wood modification standards to ensure consistency of technical terms
Test indicators	Hygroscopic equilibrium moisture content, color difference between surface and core layers (ΔE*)	Keep consistent with ISO standards to increase comparability
Judgment rules	Both indicators must be met at the same time	More stringent to ensure product quality

3. Implementation suggestions and practical application cases

Case 1: Testing of heat-treated wooden flooring of a certain enterprise

Sample submitted: a certain brand of oak flooring
Test indicators: Moisture absorption equilibrium moisture content and Color difference between surface and core layer (ΔE*)
Test results: Moisture content is 8.2%, ΔE*=7.5, which meets the standards for outdoor broad-leaved wood

More samples: DL/T 368-2010 YD/T 3934-2021 JGJ 94-2008

Sample only — not a preview of GB/T 33040-2016

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