JB / T 106-2004 "Valve signs and painting" This standard specifies the various types of general valve logo, marking style, marking methods and dimensions, the color of the valve paint. This standard applies to all types of general valves. This standard instead of JB / T 106-1978, compared with JB / T 106-1978, the main technical content has the following changes: 1, the standard name has changed; 2, an increase of valve diameter and pressure code marking style, modify The angle of the form of the mark style; 3, modified cast mark mark size and embossed font embossed depth provisions; 4, modified the "valve material identification paint" requirement; 5, modified the valve drive Paint color requirements; 6, delete the "valve seal surface material identification paint." This standard was approved in October 20, 2004 release, April 1, 2005 began to implement, the standard valve by the National Standardization Technical Committee.