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JB/T 9179.6-1999 JB/T 9179.6-1999 Machining allowances and tolerances for free forgings on hydraulic presses Module JB/T9179.6-199
JB/T 9179.5-1999 JB/T 9179.5-1999 Machining allowances and tolerances of free forgings on hydraulic presses Short cylindrical JB/T
JB/T 9179.4-1999 JB/T 9179.4-1999 Machining allowances and tolerances of free forgings on hydraulic presses Discs and punchings JB
JB/T 9179.3-1999 JB/T 9179.3-1999 Machining allowances and tolerances of free forgings on hydraulic presses Step shafts JB/T9179.3
JB/T 9179.2-1999 JB/T 9179.2-1999 Machining allowances and tolerances of free forgings on hydraulic presses - Circular shafts, squ
JB/T 9179.1-1999 JB/T 9179.1-1999 General requirements for machining allowances and tolerances of free forgings on hydraulic press
JB/T 9178.2-1999 JB/T 9178.2-1999 Complexity classification and conversion coefficient of free forgings on hydraulic press JB/T917
JB/T 9178.1-1999 JB/T 9178.1-1999 General technical conditions for open forgings on hydraulic presses JB/T9178.1-1999 Standard dow