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DIN EN 751-2:1997
Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds
This document deals with requirements and tests of non-hardening jointing compounds for metallic threaded joints comming in contact with 1st, 2nd, and 3rd family combustible gases and hot water of heating systems.
Deutsches Institut für Normung [din]