This standard specifies the grading, type, basic requirements, structures and dimensions of wooden framed cases, the usage method of steel nails and bolts, assembly methods and tests and inspections.
This standard is applicable to the design, manufacture and inspection of wooden framed cases with a mass of 0.5 t to 40 t and the following outer dimension: length is below 12.0 m, width and height are below 5.0 m.
When the mass or dimension of the contents of the wooden framed case exceeds the applicable range, it can also be designed according to the requirements of this standard.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 41 Hexagon nuts - Product grade C
GB/T 95 Plain washers - Product grade C
GB/T 102 Hexagon head wood screws
GB/T 897 Double end studs - bm=1d
GB/T 953 Double end studs (clamping type) - Product grade C
GB/T 1931 Method for determination of the moisture content of wood
GB/T 4857 (All Parts) Packaging—Basic tests for transport packages
GB/T 5398 Test methods for large transport packages
GB/T 5780 Hexagon head bolts—Product grade C
GB/T 5781 Hexagon head bolts—Full thread—Product grade C
GB/T 6170 Hexagon nuts, style 1
GB/T 7350 Waterproof packaging
GB/T 12626.2 Hard fibreboard—Part 2: General requirements for all board types
GB/T 18926 Packaging containers - Wood members
GB/T 20241 Laminated veneer lumber
GB/T 24311 Plywood for foldable packing cases
GB/T 25820 Steel strip for packing
YB/T 5002 Round nails for general uses
3 Grading
Wooden framed cases are divided into the following two grades according to the circulation environment conditions:
Grade I: it is mainly used for complicated circulation environment, with large number of reloads, and the cases may be subjected to large external force hazards during circulation;
Grade II: it is mainly used for good circulation environment, with small number of reloads, and the cases may be subjected to small external force during the circulation.
