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DL/T 646-2021 English PDF (DLT646-2012, DLT646-2006)

DL/T 646-2021_English: PDF (DL/T646-2021)
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
DL/T 646-2021English849 Add to Cart 6 days [Need to translate] Manufacturing technical requirements for steel tubular structures of transmission line and substation Valid DL/T 646-2021
DL/T 646-2012English160 Add to Cart 0--9 seconds. Auto-delivery Manufacturing technical requirements for steel tubular structures of substation and transmission line Obsolete DL/T 646-2012
DL/T 646-2006English799 Add to Cart 5 days [Need to translate] Manufacturing Technical Requirements for Transmission and Substation Steel Tubular Structures Obsolete DL/T 646-2006
DL/T 646-1998English519 Add to Cart 4 days [Need to translate] Technical specification of manufacturing steel transmission pole structures Obsolete DL/T 646-1998


BASIC DATA
Standard ID DL/T 646-2021 (DL/T646-2021)
Description (Translated English) Manufacturing technical requirements for steel tubular structures of transmission line and substation
Sector / Industry Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard K90
Classification of International Standard 29.020
Word Count Estimation 37,321
Date of Issue 2021-01-07
Date of Implementation 2021-07-01
Drafting Organization Power Industry Power Equipment and Line Equipment Quality Inspection and Testing Center; Qingdao Huijintong Power Equipment Co., Ltd.; Changshu Fengfan Power Equipment Co., Ltd.; State Grid Jibei Electric Power Co., Ltd. Materials Branch; Chongqing Jiangdian Power Equipment Co., Ltd.; Wenzhou Taichang Iron Tower Manufacturing Co., Ltd.; Chongqing Yuhuang Power Equipment Manufacturing Co., Ltd.; Nanjing Daji Iron Tower Manufacturing Co., Ltd.; Anhui Hongyuan Iron Tower Co., Ltd.; Hebei Sanen Metal Structure Co., Ltd.
Administrative Organization National Overhead Line Standardization Technical Committee (SAC/TC 202)
Issuing agency(ies) National Energy Board

BASIC DATA
Standard ID DL/T 646-2012 (DL/T646-2012)
Description (Translated English) Manufacturing technical requirements for steel tubular structures of substation and transmission line
Sector / Industry Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard K90
Classification of International Standard 29.020
Word Count Estimation 34,390
Older Standard (superseded by this standard) DL/T 646-2006
Quoted Standard GB/T 41; GB/T 95; GB/T 470; GB/T 699; GB/T 700; GB/T 702; GB/T 706; GB/T 709; GB/T 805; GB/T 985.1; GB/T 985.2; GB/T 1591; GB/T 2694; GB/T 2828.1; GB/T 2829; GB/T 3091; GB/T 3098.1; GB/T 3098.2; GB/T 3323; GB/T 5117; GB/T 5118; GB/T 5267.3; GB/T 5293; GB/
Drafting Organization Power industry electrical equipment and wiring equipment Quality Inspection and Testing Center
Administrative Organization China Electricity Council
Regulation (derived from) National Energy Board Notice 2012 No. 6; industry standard filing Notice 2012 No. 10 (No. 154 overall)
Summary This standard specifies: steel pole transmission point, steel towers and steel structure manufacturing process stent materials, processing, testing, packaging, labeling, storage and transportation requirements. This standard applies to components used mai

BASIC DATA
Standard ID DL/T 646-2006 (DL/T646-2006)
Description (Translated English) Manufacturing Technical Requirements for Transmission and Substation Steel Tubular Structures
Sector / Industry Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard K47
Classification of International Standard 29.24
Word Count Estimation 20,227
Date of Issue 2006-05-06
Date of Implementation 2006-10-01
Older Standard (superseded by this standard) DL/T 646-1998
Drafting Organization Power industry electrical equipment and wiring equipment Quality Inspection and Testing Center
Administrative Organization National Standardization Technical Committee overhead power lines
Regulation (derived from) NDRC Notice No. 29 of 2006; National Energy Board Notice 2012 No. 6; industry standard filing Notice 2012 No. 10 (No. 154 overall)
Summary This standard specifies the transmission steel pole, steel towers and steel support structure substation technical requirements of the manufacturing process, inspection rules, test methods and packaging, labeling, storage and transportation requirements. This standard applies to components used mainly polygonal steel, round steel pipe manufacturing, and the use of hot-dip galvanized or hot spray zinc (and zinc alloy) coated steel structure embalmed power transmission manufacturing and inspection. Other similar steel structures can be implemented by reference.


DL/T 646-2012 DL ELECTRIC POWER INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.020 K 90 Recoard No.. 37314-2012 DL/T 646–2012 Replacing DL/T 646–2006 Manufacturing technical requirements for steel tubular structures of substation and transmission line ISSUED ON. AUGUST 23, 2012 IMPLEMENTED ON. DECEMBER 01, 2012 Issued by. National Energy Administration Table of Contents Foreword ... 3  1 Scope ... 5  2 Normative references ... 5  3 Terms and definitions, symbols ... 7  4 General provisions ... 9  5 Product classifications ... 9  6 Materials ... 9  7 Parts processing ... 11  8 Welding ... 16  9 Weldment assembly ... 25  10 Correction ... 27  11 Test assembly ... 27  12 Hot-dip galvanizing and hot spray zinc coating ... 29  13 Inspection ... 30  14 Packaging, marking, storage and transportation ... 36  Annex A ... 37  Annex B ... 39  Annex C ... 41  Annex D ... 42  Foreword This Standard is a revision of DL/T 646-2006 Manufacturing Technical Requirements for Steel Tubular Structures of Substation and Transmission Line, according to National Energy Administration’s Notification on Plan of Formulating/Revising 2010 Initial Energy Industries Standards (GNKJ (2010) No.320) (Plan No.. Energy 20100214), which is to standardize the production of steel pole, steel tubular tower and steel tubular structures of substation and transmission line, and promote the application of new materials, processes and technologies. This Standard replaces DL/T 646-2006 Manufacturing Technical Requirements for Steel Tubular Structures of Substation and Transmission Line. Compared with DL/T 646-646, the main changes are as follows. — Sufficiently consider the characteristics of high pressure steel tubular structure products, processing technology and welding requirements of high strength steel materials; — Various domestic enterprises have accumulated rich experiences in steel tubular structure manufacturing and testing through their years of practices. The mature parts are accepted by the present revision. — Have adjusted, increased and decreased some of items and tolerances; — Have increased quality requirements of flange; — Have modified the inspection rules. This Standard was modified according to GB/T 1.1 Directives for standardization - Part 1. the Structure and Drafting of Standards. This Standard was proposed by and shall be under jurisdiction of China Electricity Council. Drafting organizations of this Standard. Power Industry Power Equipment and Transmission Material Inspection Test Center, Weifang Chang'an Steel Tower Co., Ltd., Zhejiang Shengda Steel Tower Co., Ltd., Fujian YongFu Project Consultant Co., Ltd., Qingdao Wuxiao [Group] Share Co., Ltd., Anhui Hongyuan Steel Tower Co., Ltd., Changshu Fengfan Power Equipment Co., Ltd., Yunnan Power Line Material Factory, Qingdao Huijintong Electric Power Equipment Co., Ltd. AND Guangdong Electric Power Line Equipment Factory. Main drafters of this Standard. Cai Pengyi, Li Xianjin, Wang Jun, Dai Gangping, Zhao Jinfei, Wang Zhizeng, Zhang Guixiang, Zhao Jinyuan, Su Bo, Ma Jinguang, Zhu Danming and Ren Jindong. The previous versions replaced by this Standard are. DL/T646-1998, DL/T 646-2006. Manufacturing technical requirements for steel tubular structures of substation and transmission line 1 Scope This Standard specifies the requirements for materials, process, inspection, packaging, marking, storage, transportation and so on during manufacturing steel pole, steel tubular tower and steel tubular structures of substation-and-transmission line. This Standard applies to steel tubular structures of substation-and-transmission line, whose components mainly adopt polygonal and circular steel tubes and antiseptic treatment by hot-dip-galvanized or hot-zinc-spray (zinc alloy) coatings. Other similar steel tubular structure may reference to this Standard. 2 Normative references The articles contained in the following documents have become part of this Standard when they are quoted herein. For the dated documents so quoted, all the modifications (including all corrections) or revisions made thereafter shall be applicable to this Standard. GB/T 41 Hexagon nuts, type 1 (GB/T 41-2000, ISO 4034.1999, IDT) GB/T 95 Plain washers - Product grade C (GB/T 95-2002, ISO 7091.2000, IDT) GB/T 470 Zinc ingots (GB/T 470-2008, ISO 752.2004, MOD) GB/T 699 Quality carbon structural steels GB/T 700 Carbon structural steels (GB/T 700-2006, ISO 630.1995, NEQ) GB/T 702 Hot-rolled steel bars - Dimensions, shape, weight and tolerances (GB/T 702- 2008, ISO 1035-1~4.1980, MOD) GB/T 706 Hot rolled section steel GB/T 709 Dimension shape weight and tolerances for hot-rolled steel plates and sheets (GB/T 709-2006, ISO 7452.2002, ISO 16160.2000, NEQ) GB/T 805 Tight nuts GB/T 985.1 Recommended joint preparation for gas welding manual metal arc welding gas-shield arc welding and beam welding (GB/T 985.1-2008, ISO 9692-1.2003, MOD) GB/T 985.2 Recommended joint preparation for submerged arc welding (GB/T 985.2- 2008, ISO 9692-2.1998, MOD) GB/T 1591 High strength low alloy structural steels GB/T 2694 Specification of manufacturing for transmission line tower GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1. Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection (GB/T 2828.1-2003, ISO 2859-1.1999, IDT) GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability) GB/T 3091 Welded steel pipes for low pressure liquid delivery (GB/T 3091-2008, ISO 559.1991, NEQ) GB/T 3098.1 Mechanical properties of fasteners - Bolts, screws and studs (GB/T 3098.1-2010, ISO 898-1.2009, MOD) GB/T 3098.2 Mechanical properties of fasteners – Nuts - Coarse thread (GB/T 3098.2- 2000, ISO 898-2.1992, IDT) GB/T 3323 Radiographic examination of fusion welded joints in metallic materials GB/T 5117 Carbon steel covered electrodes GB/T 5118 Low alloy steel covered electrodes GB/T 5267.3 Fasteners - Hot dip galvanized coatings (GB/T 5267.3-2008, ISO 10684.2004, IDT) GB/T 5293 Carbon steel electrodes and fluxs for submerged arc welding GB/T 5780 Hexagon head bolts-Product grade C (GB/T 5780-2000, ISO 4016.1999, IDT) GB/T 8110 Welding electrodes and rods for gas shielding arc welding of carbon and low alloy steel GB/T 8162 Seamless steel tubes for structural purposes GB/T 9793 Metallic and other inorganic coatings - Thermal spraying-Zinc, aluminium and their alloys (GB/T 9793-1997, ISO 2063.1991, IDT) GB/T 10045 Carbon steel flux cored electrodes for arc welding GB/T 11345 Method for manual ultrasonic testing and classification of testing results for ferritic steel welds GB/T 12470 Low-alloy steel electrodes and fluxes for submerged arc welding GB/T 13793 Steel pipes with a longitudinal electric (resistance) weld GB/T 17493 Low alloy steel flux cored electrodes for arc welding DL/T 284 Cold forging hot dip galvanizing bolt and nut for tower and hardware of transmission lines JGJ 81 Technical specification for Welding of steel structure of building JG/T 203 Method for ultrasonic testing and classification for steel structures 3 Terms and definitions, symbols 3.1 Terms and definitions The following terms and definitions apply to this Standard. Part The smallest unit of components and element, such as flanges, stiffening rib plate. 3.1.2 Component Basic units of steel structure that are composed by several parts such as welding parts composed by steel tubes and flanges. 3.1.3 Element Basic units of steel structure that is composed by parts or fastening connection of parts and components. 3.1.4 Assembling According to the precision and technical requirements specified, the process of connecting parts or fixing them together to make them become component. 3.1.5 Test assembling The assembly that is conducted for inspecting whether steel tubular structure or parts, GB/T 1591, GB/T 3091, GB/T 8162 and GB/T 13793. Conformity certificate of exit-factory shall be provided. The steel materials can only be used after passing sampling inspection. The batch and quantity o... ......

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