*BK1系列材質(zhì)為優(yōu)質(zhì)氮化鋼38CrMoAl、SACM645

*氮化保溫：505℃38小時(shí)、550℃34小時(shí)

*氮化層深：?jiǎn)芜?.48mm以上

*氮化層硬度：HV960? 以上

*直線度每米小于0.06

*料管生產(chǎn)范圍：內(nèi)孔（∅14-∅250）長(zhǎng)度5000mm

BK1 series(nitride barrel)

*BK1 series is made of high quality nitride steel 38CrMoAl、SACM645

*nitride insulation:38 hours of 505℃,34 hours of 550℃

*nitride layer deep:unilateral more than 0.48 mm

*the hardness:HV960?  above

*straighthess is less than 0.06 per meter

*feed barrel production within the scope of hole (∅14-∅250)length is 5000mm