This standard does not apply to the digital control of flame cutting machines and plotters dedicated to the shipbuilding industry.
GB/T 8870-1988 history
2012GB/T 8870.1-2012 Automation systems and integration.Numerical control of machines.Program format and definitions of address words.Part 1:Data format for positioning,line motion and contouring control systems
1988GB/T 8870-1988 Numerical control of machines--Data format for positioning,line motion and contouring control systems