This standard is applicable to thermometer bushings used on pipelines transporting corrosive media in chemical, petroleum and other industries, with an operating pressure of 3kgf/cm|(2). It is also applicable to thermometer bushings used on pipelines with similar uses in other departments.
HG/T 3202-1981 history
2009HG/T 3202-2009 Annular tube for thermometer of graphite