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:2020/8/6 17:01:44 Clicks:1298 Close
        Previous product: Precision casting  Next product: Stainless steel castings
        Product Details
        Quality control of wax mold assembly and module etching and cleaning
        In the process of wax mold assembly in precision casting companies, the following phenomena often occur: the operator chooses the wrong die head, the wax mold welding distance is incorrect, the wax mold arrangement is wrong, the wax drips, and there are welds, etc., which are greatly affected The production rate of castings and the pass rate of one-time delivery are calculated.
        Module etching and cleaning are mainly degreasing to improve the wettability of the module and facilitate coating. Therefore, on the one hand, it is necessary to record and control the preparation and use times of the etching solution; on the other hand, it is necessary to inspect the modules by batch to observe whether the silica sol (0.5% of the volume of wetting agent) completely wets the module.
        Precision casting enterprises should strengthen the quality control of the above two points.
        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:  5933
          
        Related Products
        ????

        QQ??????

        • Customer Advisory
        • ??????????????
        • ??????????????
        • Technical consulting
        • ??????????????
        Click to hide
        人妻自拍偷拍在线播放| 男女午夜视频免费观看| 午夜精品福利综合在线| 欧美一区二区三区激情爽 | 这里只有精品视频自拍| 欧美精品中文字幕亚洲综合| 亚洲自偷精品视频自拍| 国产精品伦一区二区三区| 亚洲日本中文字幕三级| 日本精品高清视频在线| 国产精品不卡一二三区| 日本久久中文字幕一区| 久热久热精品在线视频| 日韩一区二区三区乱码免费| 国产高清女人对白av在在线| 亚洲中文字幕久久人妻| 久久九九久精品国产| 女生高潮喷水视频在线| 午夜av成人免费观看| 一品道av| 产一级一片内射视频免费| av天堂午夜精品蜜臀| 国产成人在线午夜视频| 欧美性猛交XXXX乱大交蜜桃| 亚洲欧美日韩国内综合| 自拍av一区二区三区| 国产精品民宅偷窥盗摄| 国产精品美女午夜av| 亚洲国产欧美在线成人91| 国产自产视频一区二区三区| 亚洲熟女综合一区二区| 国产做受XXX在线观看| 一区二区三区蜜桃在线视频| 亚洲国产精品色婷婷久久| 五月激情四射狠狠婷婷| 91麻豆高清在线观看| 天天av一区二区三区| 亚洲精品毛片免费观看| 国产又粗又长又大又黑| 亚洲国产精品亚洲高清| 久久精品熟女不卡av高清|