GB/T 4897-2015 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 4897-2015 | English | 115 |
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Particleboard
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| GB/T 4897.1-2003 | English | 120 |
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Particleboard -- Part 1: General requirements for all board types
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| GB/T 4897-1992 | English | RFQ |
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Particle board
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GB/T 4897-2015: Particleboard---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT4897-2015
GB
NATIONAL STANDARD
ICS 79.060.20
B 70
Replacing GB/T 4897.1 ~ 4897.7-2003
Particleboard
[ISO 16893-2.2010, Wood-based panels - Particleboard –
Part 2.Requirements, MOD]
Issued on. JULY 3, 2015
Implemented on. FEBRUARY 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Classification... 8
5 Specification limits... 8
6 Requirements... 10
7 Measurement and test methods... 19
8 Inspection rules... 25
9 Symbols, packaging, transportation and storage... 28
Annex A (Normative) Calculation of 5-percentile and 95-percentile values... 29
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009
and GB/T 20000.2-2009.
This Standard is an amendment to GB/T 4897.1~4897.7-2003.Compared with
GB/T 4897.1~4897.7-2003, the major technical changes in this Standard are
as follows.
— COMBINE the standard divided into seven parts into one.
— The particleboards are divided into six types of panels based on the
applications in previous edition, while they are divided into twelve types
of panels in this Standard. Furthermore, ADD the property requirements
of six types of panels.
— MODIFY the classification and symbols.
— MODIFY the determination method.
— ADD the testing method of moisture resistance.
— The testing method and limit requirements of formaldehyde release use
the provisions of GB 18580.
— ADD the verticality measurement. DELETE the diagonal measurement.
— ADD the flatness measurement. DELETE the warpage measurement.
— ADD the following terms and definitions. “specification limit” and “high
humid conditions”.
— As additional property indicators, dimensional stability and sand content’s
requirements shall be determined after consultation between supplier
and demander.
This Standard was redrafted by reference to ISO 16893-2.2010 Wood-based
panels - Particleboard - Part 2.Requirements (EN) after modification.
Compared with ISO 16893-2.2010, the major differences between this
Standard and ISO 16893-2.2010 are as follows.
— MODIFY some expressions applicable to the international standards to
those applicable to China’s national standards.
— ADD the method for determining the properties of individual panel.
— ADD Section 6.2 “Appearance quality”, Chapter 7 “Measurement and test
methods”, Chapter 8 “Inspection rules”, Chapter 9 “Symbols, packaging,
transportation and storage”.
— The testing method and limit requirements of formaldehyde release use
the provisions of GB 18580.
— ADD the requirements for the water-absorbent thickness expansion
ratio in 2h of the furniture grade particleboard for use in dry conditions
— ADD the definitions of particleboard, general purpose particleboard,
furniture grade particleboard, load bearing particleboard and heavy-duty
load bearing particleboard.
— ADD the flatness measurement.
— WIDEN the lower specification limits of the moisture content to 3%.
— ADD the calculation formula of mid-panel density deviation.
Some of the elements of this document may be the subject of patent rights. The
issuing authorities of this document shall not be held responsible for identifying
any or all such patent rights.
This Standard was proposed by State Forestry Administration of the People’s
Republic of China.
This Standard shall be under the jurisdiction of the National Technical
Committee for Standardization of Wood-based Panels (SAC/TC 198).
Drafting organizations of this Standard. Research Institute of Wood Industry,
Chinese Academy of Forestry; Fujian Furen Wood Industry Co., Ltd; Kunming
Xinfeilin Panel Board Co., Ltd; Jilin Forest Industry Co., Ltd; Dareglobal Wood
(Fujian) Co., Ltd; Asia Dekor (Huizhou) Woods Co., Ltd; Power Unity Precedent
Technology (Beijing) Co., Ltd; Handan Jinsaibo Panels Co., Ltd; Jiangxi
Provincial Product Quality Supervision Testing College; Tangshan Jingsen
Wood-based Panels Co., Ltd; and Southwest Forestry University.
Main drafters of this Standard. Long Ling, Chen Shiying, Qu Yanchun, Zheng
Fengshan, Zhang Jianjun, Chen Chongying, Jiang Fuchang, Wu Fangjing,
Huang Mei, Yuan Yunzeng, Qiu Weixing, Yuan Junguo and Du Guanben.
The previous released editions substituted by this Standard are as follows.
— GB/T 4897-1985, GB/T 4897-1992 and GB/T 4897.1~4897.7-2003.
Particleboard
1 Scope
This Standard specifies the terms and definitions, classification, requirements,
measurement and test methods, inspection rules, symbols, packaging,
transportation and storage of the particleboards.
2 Normative references
The following documents are essential to the application of this document. For
dated references, only the editions with the dates indicated are applicable to
this document. For undated references, only the latest editions (including all the
amendments) are applicable to this document.
3 Terms and definitions
The terms and definitions defined in GB/T 18259-2009 and LY/T 1717-2007 and
the following ones are applicable to this document. For ease of use, some of
the terms and definitions in GB/T 18259-2009 and LY/T 1717-2007 are
repeatedly listed below.
4 Classification
Classification in accordance with the applications.
5 Specification limits
For the dimensional deviation, the numerical values in Table 1 refer to its
specification limits. For the mid-panel density deviation and moisture content,
the numerical values required in Sections 6.3.1.1 and 6.3.1.2 refer to their
specification limits. For the formaldehyde release, the numerical values
required in GB 18580 refer to upper specification limits.
6 Requirements
The dimensional deviations shall comply with the requirements of Table 1.
The mid-panel density deviation shall be ± 10%.
7 Measurement and test methods
The measurement shall be carried out according to relevant provisions in GB/T
19367-2009.
The moisture content shall be determined according to the provisions of Section
4.3 in GB/T 17657-2013.
8 Inspection rules
Besides all of the exit-factory inspection items, the items of the modulus of
elasticity, surface bonding strength, moisture resistance and screw holding
force have also been added in the type inspection. CONDUCT the type
inspection under one of the following circumstances.
The products shall use cubic meter (m3) as unit of measurement (the
permissible error shall not be taken into account).
9 Symbols, packaging, transportation and storage
The products shall be respectively packed properly in accordance with different
types and specifications. Each package shall be attached with an inspection
label that gives clear indication of the product name, type, grade, manufacturing
plant’s name, trademark, format dimensions, quantity, product standard number
and formaldehyde release limit sign.
Annex A
(Normative)
Calculation of 5-percentile and 95-percentile values
This Annex specifies the method for calculating the 5-percentile and 95-
percentile values of sample panel.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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