This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation and other requirements for pipe flanges made of impermeable graphite (impregnated, pressed). This standard applies to graphite tube flanges made of impermeable graphite materials (impregnated, pressed) used on pipelines transporting corrosive media in the chemical, petroleum and other industries. It also applies to similar-purpose pipelines in other industries. Impermeable graphite tube flange.
HG/T 3200-2009 Referenced Document
GB/T 13465.1 Test method of impermeable graphite materials.Part 1:General of test method for mechanical properties*, 2014-09-03 Update
GB/T 13465.2 Test method of impermeable graphite materials.Part 2:Flexure strength*, 2014-09-03 Update
GB/T 13465.3 Test method of impermeable graphite materials.Part 3:Compress strength*, 2014-09-03 Update
GB/T 1804 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications
HG/T 2059-2004 Technical regulations for imperious graphite tube
HG/T 2370-2005 Specification of graphite chemical process equipment
HG/T 2642 Test method for tensile strength of impermeable graphite materials