The basic situation The national standardization administrative department approved the establishment and authorization of technical organizations. The first committee was established in 1992 and is currently the third one. The existing 46 members, of which 1 chairman, vice chairman of the 2, Secretary-General 1 people. Secretariat Unit: Hefei General Machinery Research Institute. ISO / TC153, ISO / TC / 153 / SC1 / SC2, ISO / TC185 China's counterparts in technical institutions. Duty to develop valve industry, national and industry standards medium and long-term planning and annual plan, review the valve industry's national standards and industry standards, responsible for the standard content, is responsible for publicizing and interpretation of centralized standards, in charge of the valve industry standardization technology research. Centralization is responsible for the scope of the national general, special purpose materials of various high school low pressure valve, valve drive, overvoltage protection safety devices and other specialized areas of standardization. Products covered are universal valves, check valves, ball valves, butterfly valves, gate valves, pressure reducing valves, safety valves, diaphragm valves, steam traps, etc. as well as drive devices for these valves . Serial No. Standard No. Name Standard Replacement No. Date of implementation 1GB / T12226-2005 General purpose valve gray cast iron technical conditions GB / T12226-19892006-01-01 2GB / T12227-2005 General valve ductile iron technical conditions GB / T12227-19892006-01 -01 3GB / T12229-2005 General valve carbon steel castings technical conditions GB / T12229-19892006-01-01 4GB / T12230-2005 General valve stainless steel castings technical conditions GB / T12230-19892006-01-01 5GB / T12232-2005 General Valve flange connection iron gate valve GB / T12232-19892006-01-01 6GB / T12250-2005 steam traps terminology, logo, the length of the structure GB / T12250-1989, GB / T12248 ~-01-01 7GB / T12251 Test methods for steam traps GB / T12251-1989-2006-01-01
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