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GB/T 6482-2007 Thread extension steel bars for rock drilling

Standard Number:  GB/T 6482-2007
Title:  Thread extension steel bars for rock drilling
Language:  Simplified Chinese
Publication Date:  2007/10/25
Execute Date:  2008/4/1
Status:  Current
Standard Type:  Product
International Classification for Standards (ICS)METALLURGY>>Iron and steel products>>Steels profiles
CCS Classification for Standardsmetallurgical>>Iron and steel products>>Steel, deformed steel
Publisher:  Chinese Standards(GB)
Number of Pages:15  

Preface: This standard and ISO10207:1991 "drill bit tools - impact drill with nominal size is 22 mm and 38 mm waveform of screw drilling tools, and ISO10208:1991 the drill bit tools - left-handed waveform thread, the degree of consistency is not equivalent, the main differences are as follows: - increases the trapezoid Thread the corresponding code, related dimension, symbols and schematic diagram. -- -- -- combined with the actual situation in our country, drill rod classification and code are given. - adjust the length of drill rod basic size and allowable deviation range. - specifies the drill rod and connected set of surface heat treatment hardness range. Instead of this standard GB/T6482-1994" Drilling with waveform "threaded drill rod. Compared this standard with GB/T6482-1994 main changes are as follows: -- -- -- changed the name of the standard, by the standards of the drilling using waveform threaded drill rod, the drilling with threaded drill rod instead. - increase the definition of screw drill rod. - will drift jumbo Tunneling jumbo drill rod instead of drill rod. - to cancel the definition of relay drill rod, no longer will relay the classification of the drill rod classification and code included in the drill rod. - increases the content of related items order. - changed to suspend the desktop connected set of symbols, the original standard of LJT LJZ instead. - change the nominal hexagonal hollow steel The symbol of the edge distance, the original standard B to H. - increased the size of trapezoidal thread, the symbols and drawings. - adjust the shape, size and allow deviation chart content, the original standard 14 figure, 6 tables, adjusted for 18 figure, four tables. This standard put forward by the China iron and steel association. this Standard steel by the national standardization technical committee to review. This standard drafting unit: guiyang special steel co., LTD., iron and steel research institute, guizhou three group industrial co., LTD., changsha institute of mining and metallurgy research institute of metallurgical industry information standards. Main drafter of this standard: latent, Tian Qiaoli, dacac, GanHaiRen, chun-hong zhang, Du Jian li, wang Build, Dong Xinye. This standard replaced all previous releases of standard: GB/T6482-1986, GB/T 6482-1994 Rope thread extension steel bars for rock drilling.  
Description:This standard specifies drilling with threaded drill rod, connected to the set of terms and definitions, size, shape, technical requirements, test methods, inspection rules and signs, packaging, transportation, storage and quality certificate, etc.
this standard applies to 22 mm ~ 51 mm diameter drilling screw waveform and the trapezoidal thread connection drill rod and connected set.  
File Format:  PDF(Acrobat Reader) or Word version doc Document
File Size:  234KB
Tile in English:  Thread extension steel bars for rock drilling

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