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" power station control valve " approval of 3 states level is released
From;  Author:Stand originally
2008 the 2nd period approval of level of state of People's Republic of China issues announcement (always 115 period) , " marine involve a powerful person quickly " , " power station control valve " , " the metal is sealed ball valve " the standard obtains national quality to supervise examine approval of quarantine total bureau is announced.

Name of standard number level is replaced standard approval date edits GB/T 5744-2008 of date executive date is marine concern metal of GB 10869-1989 1989-03-31 2008-01-31 2008-07-01 GB/T 21385-2008 of control valve of power station of GB/T 5744-1993 1985-12-06 2008-02-14 2008-09-01 GB/T 10869-2008 of a powerful person quickly 2008-02-02 2008-07-01 of sealed ball valve