GB/T 149 was the national standard for pencils but now it has been abolished.
GB/T 26698-2011 Examination pencils and special pens for card application and GB/T 26704-2011 Pencils will be implemented soon.
Other pencil-related industry standards are
QB/T 2992.3-2008 Terminology for pen products Part 3: Pencils
QB/T 2992.4-2008 Terminology for pen products Part 4: movable pencil
QB/T 1023-2007 Mechanical pencils
QB/T 1024-2007 Black leads for mechanical pencils
QB 1045-1991 Technical regulations for labor safety in pencil industry
NF T37-001-4-2001 Plated metal coils. Test methods. Part 4:Pencil hardness
NF E04-707-3-1994 Automatic drawing pencils. Part 3:Graphite.HB pencil core bending strength
NF E04-707-1-1990 Mechanical pencils. Part 1:Classification, dimensions, performance requirements and tests
NF E04-707-2-1990 Mechanical pencils. Part 2:Black lead. Classification and dimensions
HG/T 2245-1991 Nitro pencil paints of various colors
QB/T 2774-2006 pencil
HG/T 2246-1991 Various colors of nitro pencil primer
GB/T 6739-2006 color paints and varnishes pencil method of determining the hardness of the paint film
Hope it’s useful to you！
