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ZHOUSHAN OSD MACHINERY CO.,LTD. | ||
Address | NO.22 XINGONG ROAD, JINTANG TOWN, ZHOUSHAN, ZHEJIANG, CHINA | |
Contact | Mr Wade Zheng | |
Whatsapp/ Wechat | +8613666718087 | |
Email | sales5@oushengda.com | |
Website | www.oushengda.com | |


















Technical data of screw &cylinder | ||||||||
Base Material | 38CrMoAlA | |||||||
Heat treatment | Nitriding + Hardening & Tempering | |||||||
Nitriding hardness | HV900~1050 | |||||||
Nitriding thickness | 0.5~0.8mm | |||||||
Surface roughness | Ra0.4 | |||||||
Liner straightness | 0.015mm | |||||||
Technical data of alloy | ||||||||
Bimetallic hardness | HRC58-68 | |||||||
Bimetallic thickness for screw | 1.0-3.0mm | |||||||
Type of alloy | ||||||||
Stellite | Wear resistance | ★★★ | ||||||
Colmonoy 6 PTA | ||||||||
Colmonoy 56 PTA | ||||||||
Tungsten carbide | Wear resistance | ★★★★ | ||||||






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