GB4820-2013

Sawn timber for shaft lifting guide

罐道木

GB 4820-2013 は現行の中国強制国家規格です：Sawn timber for shaft lifting guide。業界：機械。テーマ：製品安全。施行日：2014年9月11日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

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.

技術要求

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.

試験方法

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.

よくある質問

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.

適用のヒント

種別: 製品
CCS: B68
ICS: 79.040
所管部門: National Forestry and Grassland Administration
技術委員会: National Technical Committee on Timber of Standardization Administration of China