This standard specifies the allowable limit deviation for black leather forgings. This standard applies to forgings whose entire surface is not machined or part of the surface is not machined.
GB/T 15826.9-1995 history
2008GB/T 21471-2008 Machining allowancs and tolerances for steel open die forgings on hammer.Shafts
1995GB/T 15826.9-1995 Machining allowances and tolerances for steel open die forgings on hammer--Forging without machining
GB/T 15826.9-1995 Machining allowances and tolerances for steel open die forgings on hammer--Forging without machining was changed to GB/T 21471-2008 Machining allowancs and tolerances for steel open die forgings on hammer.Shafts.