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


        Precision Casting Valve PartsMore>>

        Stainless steel castings

        Publisher: Wuxi Yongsheng Metals Goods Co.,Ltd. Release Time:2016/10/24 10:27:16 Clicks:1778 Close
        Previous product: Stainless steel castings  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:  3055
          
        Related Products
        ????

        QQ??????

        • Customer Advisory
        • ??????????????
        • ??????????????
        • Technical consulting
        • ??????????????
        Click to hide
        亚洲精品成人无码中文毛片| 日本偷拍一区二区三区| 99久热在线精品视频观看| 不卡无码人妻一区三区音频| 中文字幕在线国产精品| 尻美国老妇人的肥白逼| 欧美制服丝袜亚洲自拍偷拍| 日韩欧美国产成人在线| 亚洲美综合乱码精品成| 国产区欧美区一区二区| 精品国产亚洲一区人成在线| 国产av福利久久精品| 偷拍精品视频在线观看| 日本中文字幕人妻系列| 国产在线观看不卡网址| 国产一区二区三区高清视频| 国产熟女高潮一区二区三区| 激情文学亚洲| 激情内射亚洲一区二区| 蜜桃视频中文字幕一区二区三区| 北岛玲精品一区二区三区| 亚洲夫妻性生活视频网站| 亚洲伊人免费综合网站| 国产一区二区三区亚洲天堂| 91精品国产综合久久青草| 亚洲免费视频一区二区三区| 成人你懂的在线免费观看| 日韩成人在线精品视频| 人妻丰满熟妇中文字幕| 精品人妻—区二区三区| 岛国精品一区二区蜜桃| 日韩有码中文字幕一区| 欧美高清亚洲欧美一区| 激情文学久久| 久久婷婷夜色精品国产| 亚洲av三级黄色在线观看| 青草视频在线观看精品| 国产精品日韩精品日韩| av在线中文字幕日韩| 久久精品国产99国产精品亚洲| 天堂av在线播放免费|