午夜福利av一区二区,久久精品人妻系列在线,成人午夜做爰高潮片免费,人妻丝袜在线日韩精品,亚洲熟女少妇淫语高潮,日本在线观看一区不卡,人妻中文字幕不卡精品,黑人和中国熟女啪啪视频,国产精品午夜福利一区,国产精品久久九九av

<li id="gc843"></li>
<center id="gc843"></center>
<label id="gc843"></label>

  • <center id="gc843"><optgroup id="gc843"></optgroup></center>
    <li id="gc843"><tbody id="gc843"><listing id="gc843"></listing></tbody></li>

      • Wuxi Precision Casting Factory home, welcome to visit Wuxi Yongsheng Metals Goods Co.,Ltd.!

        Favorite | Problem | Sitemap

        page_banner

        Yong Sheng Metal Products

        Piston Ring
        Mechanical parts casting
        Valve Castings
        Civil Hardware
        Casting structure
        Automotive Castings
        Workpiece
        Auto parts casting
        Structural precision casting
        Civil metal casting
        Valve class Precision Castings
        Mechanical parts casting
        Hardware
        Automotive Parts Casting
        Casting structure
        Civil metal casting
        Precision Casting Valve Parts
        Mechanical parts casting
        Valve, pump class
        Auto parts casting
        Structural precision casting
        Civil metal casting
        Precision Casting Valve Parts
        Mechanical parts casting

        Contact Us

        Contact: Zhiyong,Lu

        Hotline:86- 13806173867
        Contact: Miss Ma

        Tel: 0510-68916532
        Fax: 0510-68916533
        E-mail: lyzz@vip.163.com 
        caochuantou@163.com

        Website: http://m.jxsysd.com

        Address: No. 38 Xiqun Meicun Industrial Park Road, Wuxi


        Auto parts castingMore>>

        Stainless steel castings

        Publisher: Wuxi Yongsheng Metals Goods Co.,Ltd. Release Time:2016/10/24 10:28:20 Clicks:2004 Close
        Previous product: 無錫精密鑄造  Next product: Stainless steel castings
        Product Details

        The working life of precision castings: the organization structure caused by heat treatment is unreasonable, the grain size exceeds the standard, leading to the main properties such as toughness of castings, hot and cold fatigue properties, wear resistance and so on, affecting the working life of precision casting parts.
           The cost of manufacturing precision castings: As the intermediate or final step in the manufacturing process of precision castings, cracking, distortion and poor performance are caused by heat treatment. In most cases, castings are discarded and can be used even if they are repaired. Will increase the working hours, extended delivery time, increase the cost of manufacturing castings.
        Precision casting precision manufacturing: organizational transformation is not uniform, incomplete heat treatment and the formation of residual stress caused by excessive casting after the heat treatment, assembly and precision casting process of deformation, thereby reducing the accuracy of precision casting, or even scrap .
           Precision casting parts strength: heat treatment process is not properly developed, heat treatment operation is not standardized or heat treatment equipment is not good, resulting in the strength of the castings to be processed (hardness) can not meet the design requirements.
        It is heat treatment technology and the quality of precision casting closely related, making these two technologies in the process of modernization, mutual promotion and common improvement. In recent years, the international precision casting heat treatment technology is the rapid development of the field of vacuum heat treatment technology, precision casting parts of the surface hardening technology and precision casting material pre-hardening technology. Http://www.cnwxyszj.com

        About Us

        Wuxi Yongsheng Metals Goods Co.,Ltd.

        Hotline:86-13806173867

        Contact: Zhiyong Lu
        Contact: Miss Ma

        Tel: 0510-68916532
        Fax: 0510-68916533
        E-mail: lyzz@vip.163.com

         caochuantou@163.com

        Website:http://m.jxsysd.com

        Address: No. 38 Xiqun Road Industrial Park, Jiangsu Wuxi Meicun

        Order online
        Ordering Products: 
        Contact: 
        Tel: 
        Address: 
        Email: 
        Remarks: 
        Code:  2548
          
        Related Products
        ????

        QQ??????

        • Customer Advisory
        • ??????????????
        • ??????????????
        • Technical consulting
        • ??????????????
        Click to hide
        男人的天堂av网站一区二区 | 免费国产在线精品三区| 一区二区三区一级黄色| 91九色成人国产熟女| 亚洲欧美日韩中文字幕在线一区| 久久精品九九亚洲精品| 一本久久知道综合久久| 色哟哟亚洲精品一区二区| 亚洲人妻一区二区精品| 国产麻豆精品视频在线观看| 亚洲另类欧美亚洲精品免费| 人妻少妇av在线观看| 国产激情内射免费精品| 日韩一区二区三区无码人妻视频| 大香蕉大香蕉最新在线视频| 国产日韩成人内射视频| 亚洲精品国产成人在线观看| 老湿机69福利区无码| 国产一级二级三级视频| 久久精品国产精品亚洲蜜月| 日本一区二区三区在线| 国产在线拍偷码自揄拍无| 国产精品日韩中文字幕| 久久精品国产亚洲av高清蜜臀| 国产成人无码精品久久二区三区| 中文字幕久热精品视频| 亚洲欧美日韩精品久久奇米色影视 | 麻豆亚洲国产成人精品无码区| 国产免费午夜精品理论| 综合激情网一区二区三区| 国产精品偷窥熟女精品视频| 欧美成人福利一区二区三区| 亚洲AV人人夜夜澡人人| 女人高潮一区二区三区av| 日韩av一区免费播放| 亚洲国产五月天综合网| 亚洲欧美一区二区三区中文| 国产一区二区丝袜高跟鞋| 免费亚洲一区二区三区av| 国产精品专区欧美专区| 青青成线在人线免费啪|