人妻av无码专区_91精品视频专区_91福利视频在线观看_69**夜色精品国产69乱

牌號

trade name

c

cr

mn

si

mo

w

v

s

p

ni

hrc

臺式硬度計(jì)

特點(diǎn)及主要用途

characteristics&application

nd430

-

-

















35-40

用于軋輥堆焊

applied to repair roller

nd320h

-

-

-

-













45-55

用于軋輥堆焊

applied to repair roller

nd224

- 5

-

-

-

-

-

-



8



45-55

用于熱軋開坯輥堆焊