This standard specifies the technical requirements, test methods, inspection rules and markings, packaging, transportation, etc. of impermeable graphite tubes. This standard applies to impermeable graphite tubes used in chemical, petroleum and other industries.
HG/T 2059-2004 history
2014HG/T 2059-2014 Technical regulations for imperious graphite tube
2004HG/T 2059-2004 Technical regulations for imperious graphite tube