This part of GB/T4897 specifies the technical requirements, statistical calculation and determination methods, measurement and test methods, inspection rules, marking, packaging, transportation and storage, and marking of structural boards used in a dry state. GB/T 4897.6-2003 Particleboard Part 6: Requirements for reinforced structural boards used in a dry state GB/T4897.6-2003 Standard download decompression password: www.bzxz.net

IC8 79. 060. 20
National Standard of the People's Republic of China
GB/T 4897.6-2003
Partially replaces GB/T4897-1992
Particleboard
Part 6: Requirements for heavy-duty load-bearingboards for use in dry state
conditions2003-01-27 release
People's Republic of China
General Administration of Quality Supervision, Inspection and Quarantine
2003-05-01 implementation
GB/T4897.6-2003
GB/T4897% creative board\is divided into seven parts: Part 1: Common requirements for all board types; Part 2: Requirements for ordinary boards used in dry conditions; Part 3: Requirements for furniture and interior decoration boards used in dry conditions; Part 4: Requirements for structural boards used in dry conditions; Part 5: Requirements for structures used in humid conditions; Part 6: Requirements for reinforced structural boards used in explosive conditions; Part 7: Requirements for reinforced structural boards used in humid conditions. This part is the sixth part of B/T4897 particleboard. This part is not equivalent to the European standard EN312-6:1997 "Particleboard Part 6: Requirements for reinforced structural boards used in dry conditions". Except for surface bonding strength and screw holding force, the physical and chemical performance indicators are the same as EN312-6. The dimensional change detection items are not listed in this part. This part replaces the corresponding part of GB/T4897-1992. GB/T4897--2003 Particleboard\Compared with the previous version (B/T4897-1992), the important technical change is that the original standard is divided into seven parts, among which the requirements for structural boards used in moisture-proof conditions and the requirements for reinforced structural boards used in wet conditions are newly added. This part corresponds to the technical requirements of Class B in the original standard, but the performance indicators are higher, which is consistent with EN 312-6. This part was proposed by the State Forestry Administration.
This part was drafted by the National Technical Committee for the Promotion of Standardization of Wood-Based Panels. The responsible drafting unit of this part is the Institute of Wood Industry, Chinese Academy of Forestry. The participating drafting units of this part are Beijing Timber Factory and Hebei Saibo Board Industry Group. The main drafters of this part are Chen Wangying, Long Ling, Zheng Fengshan, and Zhang Zhanhao. This part was first issued in February 1985, revised for the first time in August 1992, and this is the second revision. This part is entrusted to the National Technical Committee for the Promotion of Standardization of Wood-Based Panels for interpretation. CB/T 4897. 6--2003
Particleboard Part 6: Requirements for reinforced structural boards used in a dry state 1 Scope
This part of GB/T 4897 specifies the technical requirements, statistical calculation and determination methods, measurement and test methods, inspection rules, marking, packaging, transportation and storage, and signs for structural boards used in a dry state. This part applies to particleboard as defined in 3.6 of GB/T 4897.1-2003. This part does not apply to standard particleboard (OSB). 2 Normative references
The provisions in the following documents become the provisions of this part through the application of this part of GB/T 4897 . For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, the parties to an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version applies to this part.
GB/T4897.1—2003: Flower board Part 1: Common requirements for all board types GB/T17657-1999 Test methods for physical and chemical properties of selected boards and veneer artificial boards 3 Technical requirements
3.1 Thickness, width, difference between two diagonals, warpage, appearance quality and common indicators shall comply with GB/T 4897,1-2003 5.1~5.5 requirements.
3.2 Physical and chemical performance indicators are shown in Table 1.
Table 1 Physical and chemical performance indicators
Static bending strength
Flexural elastic modulus
Internal bonding strength
Surface bonding strength
24 h water absorption thickness expansion rate
Nominal thickness range/mm
>20~25
22 550
>25~32
≥2400
>32～40
22 200
Screw holding force: For plates with a thickness of ≥16mm, the screw holding force on the plate surface is ≥1100N, and the screw holding force on the plate edge is ≥800N. 4 Statistical calculation and determination method
According to the provisions of Chapter 6 of GB/T4897.1-2003. 5 Measurement and test methods
5.1 Sampling and specimen size
According to the provisions of 7.2 of GB/T4897.1-2003. GB/T 4897.6--2003
Determination of static bending strength and bending elastic modulus
According to the provisions of 4.9 of GB/T 17657--1999. 5.3 Determination of internal bonding strength
According to the provisions of 4.8 of GB/T 17657--1999. 5.4 Surface bonding strengthbZxz.net
According to the provisions of 4.13 of GB/T 17657--1999. 524h water absorption and swelling rate determination
shall be carried out in accordance with 4.5 of GB/T17657-1999. 5.6 Screw holding force determination
shall be carried out in accordance with 4.10 of GB/T 17657:-1999. 6 Inspection rules
Inspection rules shall be carried out in accordance with Chapter 8 of GB/T4897.1--2003. 7 Marking, packaging, transportation, purchase and storage, and marking shall be carried out in accordance with Chapter 9 of GB/T4897.1---2003.
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