JB/T 988-1977 Welded straight pipe joint body JB/T988-1977 standard download decompression password: www.bzxz.net
Some standard content:
Standard of the First Machinery Industry Department of the People's Republic of China Welded Straight Pipe Fitting Body Ci×35wwW.bzxz.Net Marking example: Straight pipe fitting body with a pipe outer diameter of 28mm; Fitting body 28JB988-77 The First Machinery Industry Department of the People's Republic of China issued the First Machinery Industry Department Standardization Research Institute 356 JB988-77 Replace JB98 8--67 The rest are 3 implemented on May 1, 1977 Jinan Foundry and Forging Machinery Research Institute and other leather pipes JB988-77 M12×1.25 M36×2 M42×2 M52×2 M60×2 Technical conditions are in accordance with the provisions of JB1003-77. 24 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.