GB4820-2013

Sawn timber for shaft lifting guide

罐道木

GB 4820-2013 es una norma nacional china obligatoria vigente: Sawn timber for shaft lifting guide. Sector: Maquinaria. Enfoque: Seguridad de productos. Entrada en vigor: 11 sept 2014.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

This standard applies to sawn timber for shaft lifting guides (罐道木) specifically used in mine shafts. It is not applicable to general construction timber or other industrial wood products. It is essential for manufacturers and suppliers providing wood materials for mining operations in China.

Requisitos técnicos

This standard specifies the technical requirements for sawn timber for shaft lifting guides (罐道木), including tree species, dimensions, tolerances, and defect limits. Clause 3.4 regarding defect limits is mandatory, while other clauses are recommended. The standard specifies seven tree species, including Abies spp., Picea spp., and Pinus koraiensis, with Latin names provided for clarity. Dimensional requirements include lengths of 6m or 8m, and minimum widths and thicknesses of 210mm, with specific tolerances for length and cross-section. The standard also defines strict defect limits for knots, decay, insect holes, bending, cracks, and blunt edges. Compared to the previous version, the standard expands the applicable tree species and tightens the allowable limits for knots and insect holes.

Métodos de ensayo

The standard outlines testing and evaluation procedures, including sampling methods, dimensional measurement, and material quality assessment. Sampling is conducted according to GB/T 17659.2, while dimensional inspection and material quality evaluation follow GB/T 4822. Volume calculation is performed according to GB/T 449. These procedures ensure consistent quality control and compliance verification for the sawn timber.

Preguntas frecuentes

What products are regulated under GB 4820-2013?

GB 4820-2013 applies to sawn timber for shaft lifting guides (罐道木), which is specifically used in mine shafts.

Are there any updates from the previous version of GB 4820-2013?

Yes, compared to GB 4820-1995, the updated standard expands the applicable tree species from 6 to 7, adds Latin names, tightens the allowable limits for knots and insect holes, and includes new sampling methods.

Is GB 4820-2013 mandatory?

Clause 3.4 regarding defect limits is mandatory, while the remaining clauses are recommended.

The summary above provides a high-level overview of GB 4820-2013. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 4820-2013 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Producto
CCS: B68
ICS: 79.040
Organismo competente: National Forestry and Grassland Administration
Comité técnico: National Technical Committee on Timber of Standardization Administration of China

Relaciones

Sustituye a:GB 4820-1995