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Database: 189759 (19 Oct 2025)
MT 646-1997 English PDF
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MT 646-1997
: Frictional metal prop
Status: Obsolete
Standard ID
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Standard Title (Description)
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MT 646-1997
English
399
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Frictional metal prop
Obsolete
MT 646-1997
PDF similar to MT 646-1997
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Basic data
Standard ID
MT 646-1997 (MT646-1997)
Description (Translated English)
Frictional metal prop
Sector / Industry
Coal Industry Standard
Classification of Chinese Standard
D97
Classification of International Standard
73.100.99
Word Count Estimation
10,182
Date of Issue
11/10/1997
Date of Implementation
4/1/1998
Older Standard (superseded by this standard)
MT 5-1974; MT 70-1983
Summary
This standard specifies the classification friction metal pillar, technical requirements, test methods, inspection rules, marking, packaging, transport and storage. This standard applies to mining friction metal pillars.