标准布氏硬度块、布氏条
(150-600)HBW 10/3000 150/块
(150-600)HBW 5/750 150/块
(150-600)HBW 2.5-187.5 150/块
(75-125)HBW 10/1000
(75-125)HBW 5/250
(75-125)HBW2.5/62.5
(150-250)HBS 5/750