*BK1系列材质为优质氮化钢38 CrMoAl、SACM645

*氮化保温：505℃38小时、550℃34小时

*氮化层深：单边0.48mm以上

*氮化层硬度：HV960〫 以上

*直线度每米小于0.06

*料管生产范围：内孔（∅14-∅250）长度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