This standard specifies classification, requirements, test method, result calculation and judgment method, inspection rules as well as marking, packaging, transportation and storage of the oriented strand board.
This standard is applicable to the oriented strand board with multi-layer structure which is made of wooden wafer with specified shape and thickness by oriented forming and pressing after sizing.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/T 17657 Test Methods of Evaluating the Properties of Wood-based Panels and Surface Decorated Wood-based Panels
GB 18580 Indoor Decorating and Refurbishing Materials - Limit of Formaldehyde Emission of Wood-based Panels and Finishing Products
GB/T 19367 Wood-based Panels - Determination of Dimensions of Panels
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
oriented strand board (OSB)
the multi-layer structural board that is made from wooden wafer with specified shape and thickness by oriented forming and hot pressing after sizing and the shavings on the surface layer are arranged along the length or width direction of the board
3.2
dry condition
indoor atmosphere or protected outdoor atmosphere, which generally refers to the atmosphere of 20℃ in temperature, up to 65% in relative humidity or that with a relative humidity above 65% for only few weeks a year
