GB 4820-2013 English PDF

US$88.00 · In stock
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GB 4820-2013: Sawn timber for shaft lifting guide
Status: Valid

GB 4820: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 4820-2013	88	Add to Cart	2 days	Sawn timber for shaft lifting guide	Valid
GB 4820-1995	199	Add to Cart	2 days	Sawn timber for shaft lifting guide	Obsolete
GB 4820-1984	RFQ	ASK	3 days	Sawn timber for shaft lifting guide	Obsolete

Similar standards

GB/T 18107   LY/T 2407   LY/T 1184   GB/T 1927.11   GB/T 4812   GB/T 4814   

Basic data

Standard ID: GB 4820-2013 (GB4820-2013)
Description (Translated English): Sawn timber for shaft lifting guide
Sector / Industry: National Standard
Classification of Chinese Standard: B68
Classification of International Standard: 79.040
Word Count Estimation: 5,579
Older Standard (superseded by this standard): GB 4820-1995
Quoted Standard: GB/T 449; GB/T 4822; GB/T 17659.2
Regulation (derived from): National Standards Bulletin No. 22 of 2013
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the tank Woods technical requirements, test methods and volume measurement. This standard applies to a dedicated tank mine shaft Woods.

GB 4820-2013: Sawn timber for shaft lifting guide

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Sawn timber for shaft lifting guide ICS 79.040 B68 National Standards of People's Republic of China Replacing GB 4820-1995 Woods tank Issued on. 2013-11-12 2014-09-11 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Article 3.4 of this standard are mandatory, the rest are recommended. This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB 4820-1995 "tank Woods", compared with GB 4820-1995 The main changes are as follows. --- Suitable species expanded from the original six to seven kinds, and filling Latin; --- For articulated, dead knots, Poles have done a permissible limits tightened restrictions; --- Increased sampling of the product. Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents. This standard by the National Standardization Technical Committee timber (SAC/TC41) and focal points. This standard was drafted. Heilongjiang Provincial Academy of Forestry, Coal Datun Coal and Electricity Company, Shandong Yankuang Group was for the center. The main drafters of this standard. Tie force, put off, Li River, Songrun Hui, Wang Wei Qi, Liu Decheng, Heping Sheng, Ding Jianqiang, plum gold, Jiang Lu, Chen, Han Bin, Mu Guanghui, Zhao Nan, Li Weidong. This standard replaces the standards previously issued as follows. --- GB 4820-1984, GB 4820-1995. Woods tank

1 Scope

This standard specifies the technical requirements for tank woods, test methods and measurement volume. This standard applies to the mine shaft special tank woods.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 449 sawn timber volume table GB/T 4822 Test sawmills GB/T 17659.2 sawn timber batch inspection Sampling and judging methods - Part 2. Lumber batch inspection Sampling and judging methods

3 Technical requirements

3.1 Species Fir (Abiesspp.), Spruce (Piceaspp.), Armand Pine (Pinusarmandi), pine (Pinuskoraiensis), kwangtungensis (Pinuskwangtungensis), Pinus sylvestris (Pinussylvestrisvarmongolica), Ash (Fraxinusmandshurica). 3.2 Dimensions 3.2.1 Length. 6m, 8m. 3.2.2 Width and thickness. 210mm or more. Common Size. 210mm × 210mm, 240mm × 240mm, 270mm × 270mm, 300mm × 300mm. 3.3 Deviation 3.3.1 allowed length. 6-2cm. 3.3.2 The width and thickness allowed. ± 4mm. 3.4 defect limit Table 1 Limit defect. Table 1 defect in material limits Name defect allowable limit Articulated, dead knots maximum size can not exceed 20% of the width of material Must not have decayed within the full range of timber length Poles can not be more than six at any 1m length within the range of material Table 1 (continued) Name defect allowable limit High bending maximum camber shall not exceed the length of the song within the level of 1% Cracks, leather Length does not exceed 10% of material length Through cross-section must not have Wane maximum size should not exceed 20% of the width of material (through the whole length of the material must not have)

4 Test methods and volume measurement

4.1 Sampling Method Execution according to the provisions GB/T 17659.2 of. 4.2 size calibration Execution according to the provisions GB/T 4822's. 4.3 Evaluation Material Execution according to the provisions GB/T 4822's. 4.4 Volume measurement Execution according to the provisions GB/T 449's. ......

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