GB 3265-1995 Fire protection snap connections was changed to GB 12514.2-2006 Fire coupling.Part 2: Patterns and basic parameters for fire snap-types coupling.
GB 3265-1995 Fire protection snap connections was changed to GB 12514.3-2006 Fire coupling.Part 3:Patterns and basic parameters for fire insertion-type coupling.
GB 3265-1995 Fire protection snap connections was changed to GB 12514.1-2005 Fire coupling.Part 1:General technical conditions for fire coupling.
GB 3265-1995 Fire protection snap connections was changed to GB 12514.4-2006 Fire coupling.Part 4: Patterns and basic parameters for fire screw-type coupling.
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