This standard specifies the machining allowances and tolerances for circular, rectangular (A1/A2≤2.5), hexagonal disk and column free forgings. This standard is applicable to free forgings whose dimensions conform to 0.1D≤H≤(or A, S) discs and D
GB/T 15826.2-1995 history
2008GB/T 21470-2008 Machining allowances and tolerances for steel open die forgings on hammer.Disks,columns,rings and seamless cylindrical sleeves
1995GB/T 15826.2-1995 Machining allowances and tolerances for steel open die forgings on hammer--Disks and columns
GB/T 15826.2-1995 Machining allowances and tolerances for steel open die forgings on hammer--Disks and columns was changed to GB/T 21470-2008 Machining allowances and tolerances for steel open die forgings on hammer.Disks,columns,rings and seamless cylindrical sleeves.