This standard specifies the general technical requirements for anti-seepage Coatings, which are applicable to the situation where various anti-seepage Coatings play a local anti-seepage effect on the workpiece during gas and solid chemical heat treatment. These Coatings include anti-carburizing Coatings, anti-nitriding Coatings, anti-carbonitriding Coatings, anti-nitrocarburizing Coatings, anti-boronizing Coatings, anti-chromium Coatings, and anti-aluminum Coatings. The anti-seepage coatings formed by these Coatings play a role in preventing the active atoms generated in the seepage agent from penetrating into the surface of the workpiece during chemical heat treatment.