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 to (excluding amending error in the text), or revisions of, any 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 - Part2: 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)
3 Terms and Definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
Plywood for container flooring
Plywood (veneer log) with functions of insect prevention, corrosion protection and weathering resistance, used as container flooring for bearing a certain load
4 Requirements
4.1 Board Structure
4.1.1 Surface board shall be full-breadth veneer, compacted plane facing outside. The internal layer is whole-sheet veneer, and shall not have end joint that has not be treated with inclined plane lapping or finger jointing.
4.1.2 Symmetrical layers outsides of the core layer shall be wood with same thickness, tree species or physical mechanical property, and same wood grain direction.
4.1.3 Thickness of veneer (single board) depends on anti-corrosion agent penetration. Generally, the total thickness of veneers with same fiber direction with outer ply is 60% the total thickness of the board blank.
4.1.4 Number of layers for board is not less than 19 (layers).
4.2 Bonding Property of Adhesion Agent
It shall meet the requirement of outdoor plywood (Category I plywood).
4.3 Anti-corrosion Agent
It shall adopt the one specified by ""Cargo Containers: Quarantine Aspects and Procedures"(2010) issued by the Australian Quarantine and Inspection Service (AQIS).
4.4 Specification and Dimensional Tolerance
4.4.1 Common breadth: 1160mm or 1141mm in width; 2400mm, 1388mm or 1010mm in length; or agreed by the supply and demand parties.
4.4.2 28mm in thickness; or agreed by the supply and demand parties.
4.4.3 Allowable dimensional tolerance of products shall satisfy the requirements of Table 1.
GB/T 19536-2004 The following standards are cited：
