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YB 4028-1991
Chinese Standard: 'YB 4028-1991'
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Contents [version]
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Status
Related Standard
YB 4028-1991
English
279
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Days<=3
(Deep well pumps with welded steel pipe)
YB 4028-1991
Obsolete
YB 4028-1991
SIMILAR
Google-Books for your assessment (Full-PDF of
YB 4028-1991_English
needs to be translated from scratch):
YB/T 4019-2020
YBB 00232003-2015