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NB/T 10729-2021 English PDF

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US$349.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
NB/T 10729-2021: General technical conditions of metal mesh for roadway support in coal mine
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
NB/T 10729-2021	349	Add to Cart	3 days	General technical conditions of metal mesh for roadway support in coal mine	Valid

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Basic data

Standard ID: NB/T 10729-2021 (NB/T10729-2021)
Description (Translated English): General technical conditions of metal mesh for roadway support in coal mine
Sector / Industry: Energy Industry Standard (Recommended)
Classification of Chinese Standard: D98
Word Count Estimation: 15,110
Issuing agency(ies): National Energy Administration

NB/T 10729-2021: General technical conditions of metal mesh for roadway support in coal mine

---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.
General technical conditions of metal mesh for roadway support in coal mine ICS 73.100 CCSD97 People's Republic of China Energy Industry Standard General technical conditions of metal mesh used for support of coal mine roadway Published on 2021-11-16 2022-02-16 Implementation Released by the National Energy Administration directory Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Structure type and specification 2 5 Technical requirements5 6 Detection method 7 7 Inspection and Decision Rules 8 8 Packaging, marking, transport and storage of products8

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the Science and Technology Development Department of China Coal Industry Association. This document is drafted by. Zibo Mining Group Co., Ltd., China University of Mining and Technology, Jiema (Jining) Mine Support Equipment Manufacturing Co., Ltd. company. The main drafters of this document. Lu Weidong, Zhao Qingmin, Sun Xikui, Chang Qingliang, Wang Yajie, Liu Yexian, Zhang Jinkui, Tan Li, Xin Changwei, Song Xiaolin, Hou Tao, Zhang Wen, Sun Yue, Zhang Zixue, Chen Xiangning, Sun Shuai. General technical conditions of metal mesh used for support of coal mine roadway

1 Scope

This document specifies the structural types and specifications, technical requirements, testing methods, inspection and judgment rules, production packaging, marking, transportation and storage of products. This document is applicable to metal meshes for various roadway support systems in underground coal mines, including woven meshes, diamond meshes, welded meshes, etc.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 228.1-2021 Tensile test of metallic materials - Part 1.Test method at room temperature GB/T 1499.3-2010 Steel for Reinforced Concrete Part 3.Reinforced Welded Mesh GB/T 17505-2016 General technical requirements for delivery of steel and steel products

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 The mesh pocket test can be carried out on the metal mesh under the condition of the same distance as the design of the underground roadway support system. 3.2 mesh strength meshstrength In the case where the jacking test machine is fixed with a certain row spacing between the anchor rods, the maximum test for the jacking test of the metal mesh is carried out with a 500mm diameter disc. great strength. 3.3 mesh size The distance between adjacent warp or weft threads. 3.4 wire diameter The diameter of the rebar of the metal mesh. 3.5 hole pitch The distance between adjacent filament centerlines. 3.6 warp wire All longitudinal wires on the wire mesh. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of NB/T 10729-2021_English be delivered?

Answer: Upon your order, we will start to translate NB/T 10729-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of NB/T 10729-2021_English with my colleagues?

Answer: Yes. The purchased PDF of NB/T 10729-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.