2Vダイレール式：30448(88° V14-V18)

30448

(88° V14-V18)

全面焼き入れ
HRC47±3
耐圧980kN/m
(100Ton/m)

分割型 (耳形状)

全面焼き入れ
HRC47±3
耐圧980kN/m
(100Ton/m)

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