>自己注冊上下分 24h在線客服! " />

色在线观看亚洲欧洲_黄色一二三区_午夜福利日本在线_k频道国产欧美日韩精品二区_一级 片内射视频播放下载_中文字幕无码aⅴ免费不卡_免费看午夜福利专区_久久精品国产亚洲av大全软件_桃色视频在线观看_国产精品成人av电影不卡

NEXT
PREV
 
Product
Specifications:Φ45/90mm-Φ92/188mm
Materials and Technology:
1.38CrMoALA nitriding treatment
Nitriding depth:0.5-0.8mm,nitriding hardness:HV≥920
2.42CrMo Plating:induction hardening+plating/double metal plating PTA+Chrome hardness:≥HV800,thickness 0.03-0.05mm,roughness Ra0.2um
3.SKD61 quenching,vacuum quenching overall hardening treatmen
Hardness index:HRC>55-58,straightness 0.015mm/m,roughness Ra0.4um
4.9Cr18Mov vacuum hardening,CNC circular grinding
Hardness index:HRC>50-55,straightness 0.015mm/m,roughness Ra0.4um

 

All rights:Zhoushan City Weida Machinery Co.,Ltd. Add:No.2 Road Dinghai District Jintang Town,Jinshan Industrial District,Zhoushan City 浙ICP備13024562號 Technical support:93BAIDU