the drill rod of the hydraulic breaker, used for
the steel firms,materialof the high density of the steel alloy,NC
prodution line,advanced heat treatment,*0 centigree degree hardness
of the hammer pick, *8 centigree degree hardness inside the
machineSB*0 GB2T SB*3 SB*5 SB*0 SB*1N HB*0G GB8AT
SB*1 GB8T SB**0 HB*0G SB**1 SB**1
SB**1