GB/T 19536-2015_English: PDF (GB/T19536-2015)
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| Standard ID | GB/T 19536-2015 (GB/T19536-2015) | | Description (Translated English) | Plywood for container flooring | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B70 | | Classification of International Standard | 79.060.10 | | Word Count Estimation | 16,194 | | Date of Issue | 2015-07-03 | | Date of Implementation | 2015-11-02 | | Older Standard (superseded by this standard) | GB/T 19536-2004 | | Quoted Standard | GB/T 1413-2008; GB/T 2828.1-2012; GB/T 9846.2-2004; GB/T 17657; GB/T 18259-2009; GB/T 19367-2009; ISO 1496-1-2013 | | Drafting Organization | Chinese Academy of Forestry Wood Industry Research Institute; CIMC Container Holdings Ltd; Xinhui CIMC Wood Co.; MY Timber Co., Ltd; Foshan is the Wood Co., Ltd.; Jiangsu Happy Wood Group Limited; Langfang Sanli Wood Co.; Ltd Deqing three subjects insect repellent; Huzhou Fenghe glue Technology Co., Ltd.; Zhejiang Hua Yunfeng new materials and technologies; Nanjing Forestry University | | Administrative Organization | China Wood-based Panel Standardization Technical Committee (SAC/TC 198) | | Regulation (derived from) | National Standard Announcement 2015 No.22 | | Proposing organization | State Forestry Administration | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This Standard specifies the terms and definitions for container flooring plywood, classification, requirements, test methods, inspection rules and signs, packaging, transportation and storage. This Standard applies to the wood or bamboo veneer unit (bamboo, mats, etc.) composite made with wood veneer, with pest control, anti-corrosion and weathering performance, for general cargo container floor or cladding of plain plywood. | | Standard ID | GB/T 19536-2004 (GB/T19536-2004) | | Description (Translated English) | Plywood for container flooring | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B70 | | Classification of International Standard | 79.060.10 | | Word Count Estimation | 10,145 | | Date of Issue | 2004-06-22 | | Date of Implementation | 2004-09-15 | | Drafting Organization | Institute of Chinese Academy of Forestry Timber Industry | | Administrative Organization | National Standardization Technical Committee plywood | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 7 of 2004 (total 69) | | Proposing organization | State Forestry Administration | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China | | Summary | This standard specifies: container floor with plywood definition of technical requirements, test methods, inspection rules and signs, packaging, transport and storage. This standard applies to: wood veneer made without surface treatment with pest control corrosion function General cargo with container floor with plywood. |
GB/T 19536-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 79.060.10
B 70
Replacing GB/T 19536-2004
Plywood for Container Flooring
ISSUED ON. JULY 3, 2015
IMPLEMENTED ON. NOVEMBER 2, 2015
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 Application Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 5
4 Classification... 6
5 Requirements ... 6
6 Test Methods ... 11
7 Inspection Rules ... 16
8 Marking, Packaging, Transportation and Storage ... 19
Annex A (Informative) Simulated Container Underframe for Test ... 20
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 19536-2004, Plywood for container flooring. Compared
with GB/T 19536-2004, the main differences of this Standard are as follows.
-- it changes application scope and adds bamboo-wood plywood for container
flooring and faced plywood for container flooring;
-- it adds categories;
-- it changes and supplements definitions;
-- it changes warping values in dimensions and dimensional deviations;
-- it changes appearance quality requirements;
-- it adds indexes and test methods for static bending strength, elasticity modulus
of bamboo-wood plywood for container flooring;
-- it cancels indexes and test methods for bonding strength;
-- it adds indexes and test methods for short-span shear force;
-- it adds indexes and test methods for concentrated load; and
-- it adds strength requirements and test methods for container flooring.
Attention is drawn to the possibility that some of the elements of this document may
be the subject of patent rights. The issuer of this document shall not be held
responsible for identifying any or all such patent rights.
This Standard was proposed by the State Forestry Administration.
This Standard shall be under the jurisdiction of the National Technical Committee 198
on Wood-based Panels Standardization of China (SAC/TC 198).
The drafting organizations of this Standard. Chinese Academy of Forestry Research
Institute of Wood Industry, CIMC Container Holding Co., Ltd., Xinhui Zhongji Wood Co.,
Ltd., Maoyou Timber Co., Ltd., Foshan Zhengsen Wood Co., Ltd., Jiangsu Happy
Wood Group Co., Ltd., Langfang Sanli Wood Co., Ltd., Deqing Sanke Insect-resist
Agents Co., Ltd., Huzhou Fenghe Glue Technology Co., Ltd., Zhejiang Yunfeng
Greeneo Co., Ltd. and Nanjing Forestry University.
The main drafters of this Standard. Yang Fan, Hu Shenghui, He Sidong, Tao Renzhong,
Cheng Jilie, Huang Qingbang, Wang Daojiang, Huang Anmin, Lv Bin, Wang Ximing,
Jin Jing, Cai Jiankun, Kou Fuping, Gu Shuixiang, Xu Bin and Jia Dongyu.
Plywood for Container Flooring
1 Application Scope
This Standard specifies the terms and definitions, classification, requirements, test
methods, inspection rules and marking, packaging, transportation and storage of
plywood for container flooring.
This Standard applies to plain or faced plywood which is generally used for container
flooring, made of wood veneers or bamboo-based elements (such as bamboo curtain,
bamboo mat and so on) and resistant to insects, corrosion and weathering.
2 Normative References
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced document (including any
amendments) applies to this Standard.
GB/T 1413-2008, Series 1 freight Containers – Classification, Dimensions and
Ratings
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 9846.2-2004, Plywood – Part 2. Tolerances on Dimensions
GB/T 17657, Test Methods of Evaluating the Properties of Wood-based Panels and
Surface Decorated Wood-based Panels
GB/T 18259-2009, Terms of Wood-based Panel and Its Surface Decoration
GB/T 19367-2009, Wood-based Panels – Determination of Dimensions of Panels
ISO 1496-1.2013, Series 1 Freight Containers – Specification and Testing – Part 1.
General Cargo Containers for General Purposes
3 Terms and Definitions
Those defined in GB/T 18259-2009 and the following terms and definitions apply to
this document.
3.1
plywood for container flooring
plywood which is generally used for container flooring, made of wood veneers or
bamboo-based elements (such as bamboo curtains, bamboo mats and so on) and
resistant to insects, corrosion and weathering
3.2
full-wood plywood for container flooring
plywood for container flooring, which is made by bonding wood veneers, including plain
plywood and faced plywood
3.3
bamboo-wood plywood for container flooring
plywood for container flooring, which is made by bonding bamboo elements and wood
elements, such as bamboo curtains and bamboo mats, including plain bamboo-wood
composite plywood and faced bamboo-wood composite plywood
4 Classification
4.1 It is divided into the following categories in accordance with materials.
a) full-wood plywood for container flooring; and
b) bamboo-wood composite plywood for container flooring.
4.2 It is divided into the following categories in accordance with surface treatment.
a) plain plywood for container flooring; and
b) faced plywood for container flooring.
5 Requirements
5.1 Structure
5.1.1 Full-wood plywood for container flooring
5.1.1.1 Face veneers shall be of full size with the tight surface facing outwards. The
vertical jointing of inner veneers shall not be more than 50% of the total number of
plies and shall not be more than 30 cm apart at the same location.
5.1.1.2 The veneers of symmetric plies on both sides of central ply shall be of the
same thickness, the same tree species or tree species of similar mechanical properties;
the grain direction shall also be the same.
As specified in the density measurement of GB/T 17657. The density of sample to be
tested is the arithmetic mean value of the densities of three test pieces, accurate to
0.01 g/cm3.
6.3.3 Water content test
As specified in the water content measurement of GB/T 17657. The water content of
sample to be tested is the arithmetic mean value of the densities of three test pieces,
accurate to 0.1%.
6.3.4 Static bending strength and elasticity modulus test
Carry out the test as specified in the “three-point bending” provisions for static bending
strength and elasticity modulus measurement in GB/T 17657.
The longitudinal and lateral static bending strength of sample to be tested is the
arithmetic mean value of the static bending strengths of three test pieces, accurate to
0.1 MPa.
The longitudinal and lateral elasticity modulus of sample to be tested is the arithmetic
mean value of the elasticity moduli of three test pieces, accurate to 10 MPa.
6.3.5 Immersion peeling performance test
Carry out the test as specified in the immersion peeling test in GB/T 17657. The
processing conditions of test pieces shall be as specified in the requirements for class
I immersion peeling test.
6.3.6 Short-span shear force test
6.3.6.1 Principle
Determine the maximum load borne by test pieces over a specified span.
6.3.6.2 Apparatus
Including.
a) universal mechanical tester, accurate to 10 N; and
b) Vernier caliper, division value 0.02 mm.
6.3.6.3 Test method
6.3.6.3.1 Test pieces are stored at (20 ± 2)˚C and relative humidity (65 ± 5)% to a
constant mass.
NOTE It is deemed that the mass is constant when the difference in mass measured two
times 24 h apart is less than 0.1% of the mass.
7.3.2 If the appearance quality, dimensions and mechanical performance of products
are as specified, then the batch of products is determined to be accepted, or else, it is
determined to be rejected.
8 Marking, Packaging, Transportation and Storage
8.1 Marking
8.1.1 Product marking
Products shall be marked at the proper positions with product name, manufacturer
name, product standard number, manufacturing date and inspection mark and so on.
8.1.2 Packaging label
Packaging label shall be indicated with product name, manufacturer name, address,
product standard number, manufacturing date, quantity and dampproof, sun protection
mark and so on.
8.2 Packaging
Products shall be packaged in accordance with specifications, tree varieties and batch
numbers when they are delivered. Package shall make sure that products are
protected from bump, scratch and contamination. The requirements for packaging can
also be as agreed by the supplier and the purchaser.
8.3 Transportation and storage
Products shall be piled in order during transportation and storage and protected from
contamination, damp, rainwater and sun...
......
GB/T 19536-2004
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 79.060.10
B 70
Plywood for Container Flooring
ISSUED ON. JUNE 22, 2004
IMPLEMENTED ON. SEPTEMBER 15, 2004
Jointly Issued by. General Administration for Quality Supervision,
Inspection and Quarantine (AQSIQ);
Standardization Administration of China (SAC).
Table of Contents
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Requirements ... 5
5 Test Methods ... 9
6 Inspection Rules ... 11
7 Marking, Packaging, Transportation and Storage ... 14
Foreword
Plywood for container flooring, as structural load-bearing material, is an important
component for freight container. It acts as the functions of supporting and protecting
cargo in container.
Anti-corrosion agent type and loading in the testing method of this Standard
references to the requirements of "Cargo Containers. Quarantine Aspects and
Procedures" (2001) issued by the Australian Quarantine and Inspection Service
(AQIS).
This Standard was proposed by the State Forestry Bureau.
This Standard shall be under the jurisdiction of the National Technical Committee 198
on Wood-based Panels of Standardization Administration of China.
Responsible drafting organization of this Standard. Wood Products Research Institute
of the Chinese Academy of Forestry.
Participating drafting organizations of this Standard. Xinhui Zhongji Container Wood
Flooring Co., Ltd., Southern CIMC Containers Manufacture Co., Ltd., Zhejiang Deren
Bamboo Technology Limited, Guangda Wood Industry (Shenzhen) Co., Ltd., and
Henan Huanghe Forestry Limited.
Main drafting staffs of this Standard. Yang Fan, Lu Bin, Yaogu, Zhang Jie, Liu
Yongdan, Guo Xibiao, Fan Chongzhen, and Ma Hong.
Plywood for Container Flooring
1 Scope
This Standard specifies definition, technical requirements, testing method, inspection
rules, marking, packaging, transportation and storage of plywood for container
flooring.
This Standard is applicable to general plywood for container flooring for general cargo,
which is made of wood veneer, not surface-treated, and has corrosion protection
function.
2 Normative References
The following documents contain provisions which, through reference in this text,
constitute provisions of this Standard. For the dated references, the subsequent
amendments (excluding corrigendum) or revisions of these publications do not apply.
However, all parties coming to an agreement according to this Standard are
encouraged to study whether the latest edition of these documents is applicable. For
the undated references, the latest edition of the normative document is applicable to
this Standard.
GB/T 2828.1-2003 Sampling procedures for inspection by attribute - Part1.
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection (ISO 2859-1. 1999, IDT)
GB/T 9846.2-2004 Plywood – Part 2. Tolerances on dimensions
GB/T 9846.7-2004 Plywood - Part 7. Cutting of test specimens
GB/T 17657-1999 Test methods of evaluating the properties of wood-based panels
and surface decorated wood-based panels
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
"Cargo Containers. Quarantine Aspects and Procedures" (2001), Australian
Quarantine and Inspection Service (AQIS) (2001)
4.6 Physiochemical properties
4.6.1 Physical and mechanical property shall meet the requirements of Table 3.
Table 3 Physical Mechanical Property Index of Plywood For Container Flooring
Inspection items Unit Index value
Static bending
strength
Along grain
MPa
≥85.0
Cross grain ≥35.0
Elastic modulus
Along grain
MPa
≥10000
Cross grain ≥3500
Density g/cm3 ≥0.75
Moisture % ≤12.0
Bonding strength of single specimen MPa ≥1.70
Immersion de-cohesion -
The cumulative length of any unstuck
ply on each side does not exceed 1/3
the length of this ply (under 3mm is
not counted)
4.6.2 Anti-corrosion agent type and loading shall meet the requirements of "Cargo
Containers. Quarantine Aspects and Procedures" (2001) issued by the Australian
Quarantine and Inspection Service (AQIS).
5 Test Methods
5.1 Determination of Specification and dimension
5.1.1 Measurement of thickness, width and length shall comply with the
requirements of GB/T 19367.1-2003.
5.1.2 Measurement of edge straightness shall comply with the requirements of 5.2
and 6.2 in GB/T 19367.2-2003.
5.1.3 Measurement of diagonal line
Measure on two diagonal lines of the ply (board), accurate to 1mm.
The difference of the two diagonal lines measured is the diagonal length difference of
the ply.
5.1.4 Warping measurement shall comply with the requirements of Appendix A in
GB/T 9846.2-2004.
5.2 Preparation, Size and Quantity of Specimen
5.2.1 Size and quantity of specimens shall meet the requirements of Table 4.
to 0.1%.
5.3.3 Determination of static bending strength and elastic modulus
The determination shall comply with the requirements of 4.9 in GB/T 17657-1999;
Three specimens whose length direction is parallel (along the grain) or vertical
(across to the grain) with outer ply fiber direction are cut respectively from each
specimen board.
Static bending strengths along and cross the grain of the tested specimen are the
arithmetic mean of the static bending strengths of three specimens with same grain
direction, accurate to 0.1 MPa.
Elastic modulus along and cross the grain of the tested specimen are the arithmetic
mean of the elastic modulus of three specimens with same grain direction, accurate to
10 MPa.
5.3.4 Bonding strength determination
The determination shall comply with the requirements of 4.15 in 17657-1999; and the
processing conditions to the specimen shall meet the requirement of Category I glued
wood.
5.3.5 Determination of immersion de-cohesion performance
The determination shall comply with the requirements of 4.17 in 17657-1999; and the
processing conditions to the specimen shall meet the requirement of Category I glued
wood.
6 Inspection Rules
6.1 Inspection Classification
Inspection of the products is divided into exit-factory inspection and type inspection.
6.1.1 Exit-factory inspection includes.
a) Appearance quality;
b) Specification / size;
c) Physical mechanical property inspection, including density, moisture content,
static bending strength, elastic modulus, bonding strength and immersion
de-cohesion.
6.1.2 Type inspection, except all items of exit-factory inspection, is added with
anti-corrosion agent loading.
6.2.4 As for determination of physical chemical properties, the specimens shall be
sampled randomly from each batch, and the sampled sheet number shall meet the
requirements of Table 7.
Table 7 Physiochemical Properties Sampling Plan
Batch quantity range / sheet Sampled sheet number in primary inspection
Sampled sheet number in
re-inspection
≤1200
1201~3200
3201~10000
≥10001
6.3 Judgment Rules
6.3.1 Test Result Judgment
6.3.1.1 If the average values of density, moisture content, static bending strength,
and elastic modulus of the specimens for plywood for container flooring MEET the
specified values, it is deemed that the glued wood of this batch has acceptable
property; otherwise, if a certain item is not acceptable, new specimens may be
re-sampled for re-inspection.
6.3.1.2 Judgment of bonding strength of specimens for plywood for container
flooring. If the number of the specimens whose bonding strength index value meets
the requirement is equal to or larger than 90% of number of effective specimens, it is
deemed that this property of the glued wood in this batch is acceptable; if the number
is less than 70%, it is deemed that they are disqualified. If the number of the
specimens whose bonding strength meets the requirement is equal to or larger than
70% but less than 90%, new specimens may be re-sampled for re-inspection; if the
re-inspection results show that the number of the specimens whose this property
index value meets the requirement is equal to or larger than 90% of number of
effective specimens, then it is deemed that this property of the glued wood in this
batch is acceptable; otherwise, it is deemed that they are disqualified.
6.3.1.3 If the number of the specimens ( plywood for container flooring) acceptable
in immersion de-cohesion performance is larger than or equal to 5, it is deemed that
they are qualified (acceptable); otherwise, new specimens may be re-sampled for
re-inspection.
6.3.1.4 If the anti-corrosion agent loading meets the requirement of "Cargo
Containers. Quarantine Aspects and Procedures" (2001) issued by the Australian
Quarantine and Inspection Service (AQIS), it is deemed that they are qualified
(acceptable); otherwise, new specimens may be re-sampled for re-inspection.
6.3.2 Overall judgment
If appearance quality, specification/ size, physical mechanical property, anti-corrosion
agent, and loading of the products all meet the corresponding requirements, they are
deemed as acceptable; otherwise, they are deemed as unacceptable.
7 Marking, Packaging, Transportation and Storage
7.1 M...
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