亚洲一久久久久久久久,国产精品无打码在线播放,无码精品久久久久久人妻中字,亚洲一区爱区精品无码

Product features

Specification: Φ 15 - Φ 350

Maximum length: less than 10000mm

Nitriding treatment, surface hardness: HV≥900

Nitriding depth: 0.5-0.8mm


2, material: surface WC/Co overall spray welding, can effectively improve the service life of screw


Extrusion screw - Granulation screw

Specification: Φ 15 - Φ 350

Maximum length: less than 10000mm

Nitriding treatment, surface hardness: HV≥900

Nitriding depth: 0.5-0.8mm


2, material: surface WC/Co overall spray welding, can effectively improve the service life of screw


亚洲中字幕日产AV片在线| 亚洲国产成人综合精品| 片多多免费观看高清完整版| 精品国产AV 无码一区二区三区| 亚洲成人色区| 亚洲WWW永久成人网站|