JB/T 989-1977 Welded right angle pipe joint body JB/T989-1977 standard download decompression password: www.bzxz.net
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Standard of the First Machinery Industry Department of the People's Republic of China Welded right-angle pipe joint body Marking example: Right-angle pipe joint body with a pipe outer diameter of 28mm: Joint body 28JB989--77 First Machinery Industry Department of the People's Republic of China, First Machinery Industry Department Standardization Research Institute JB989-77Www.bzxZ.net Replace JB989-67 Other 2||t t||May 1, 1977 Jinan Foundry and Forging Machinery Research Institute, etc. Total 2 pages Page 2 Outer diameter of pipe M12×1.25 -0.20M22×1.5 M36×2 M42×2 M52×2 JB989—77 Technical conditions are in accordance with the provisions of JB1003-77. 32 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.