2007JB/T 8195.12-2007 Indirect resistance furnaces.Part 12: RY series electroheating bath furnace
1991JB/T 5266-1991 Indirect resistance furnace RY series electric heating bath furnace
JB/T 5266-1991 Indirect resistance furnace RY series electric heating bath furnace was changed to JB/T 8195.12-2007 Indirect resistance furnaces.Part 12: RY series electroheating bath furnace.