GB4820-2013

Sawn timber for shaft lifting guide

罐道木

GB 4820-2013은(는) 현행 중국 강제 국가 표준입니다: Sawn timber for shaft lifting guide. 산업: 기계. 주제: 제품 안전. 시행일: 2014년 9월 11일.

적용 여부는 제품 범위, 인증 경로, 주관 당국 공고, 전환 규정에 따라 달라집니다. 컴플라이언스 판단에 사용하기 전에 번역을 의뢰하거나 공식 출처를 확인하세요.

컴플라이언스 개요

이 개요는 현재 영어로만 제공됩니다.

적용 범위

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.

기술 요구 사항

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.

시험 방법

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.

자주 묻는 질문

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.

적용 참고 사항

유형: 제품
CCS: B68
ICS: 79.040
주관 부처: National Forestry and Grassland Administration
기술 위원회: National Technical Committee on Timber of Standardization Administration of China