精品人妻久久久久久888,久久久久亚洲AV成人无码电影,亚洲免费在线不卡高清视频,中文无码一区二区不卡AV,精品国产你懂的在线观看,日韩精品中文字幕有码,在线看片日本一区二区,成a人片在线观看久亚洲,亚洲无AV码一区二区三区,国产高清精品在线一区二区

    1. <span id="kqklj"></span>
      <menuitem id="kqklj"><dl id="kqklj"></dl></menuitem>
      <rt id="kqklj"><small id="kqklj"></small></rt>

      1. Shandong Zhongrui Construction Machinery Co., Ltd official website!

        National Service Hotline:
        15005366588
               CONTACT US
        Shandong zhongrui construction machinery co. LTD
        Address : 3701 Zhuangjian Road, Kuiwen Economic Development Zone, Weifang City, Shandong Province, China
        Zip code:261041
        Phone:86-536-2288189 
        Manager li:15005366588
        URL:www.diegan.cn
        Email:15005366588@163.com 
        News Center

        Warmly celebrate the successful development of our company's ZRJSC series cluster down-the-hole hammer!

        ZRJSC series cluster type down-the-hole hammer
        The ZRJSC series cluster down-the-hole hammer is a new product developed by our company for pile hole construction specially equipped on rotary drilling rigs. This down-the-hole hammer and rotary drilling rig adopt the Bauer square connection method, which can match most rotary drilling rigs on the market.

        Aiming at the shortcomings of low working efficiency of rotary drilling rigs in hard rock environments, this product adopts the cluster type DTH hammer operation method, and utilizes the combined action of several single DTH hammers to meet the operation requirements of large-diameter pile holes and work efficiency Compared with the rotary drilling bit, it is dozens of times higher.

        At present, according to market demand, our company has officially launched a full range of products such as ZRJSC660, ZRJSC800, ZRJSC1000, ZRJSC1200, ZRJSC1300, ZRJSC1500, etc. At the same time, we can also customize and design special sizes according to customer requirements.

        In March 2015, our company successfully carried out the on-site verification of the ZRJSC1200 cluster down-the-hole hammer, and the on-site verification was a complete success!

        Picture 1: ZRJSC1200 cluster type DTH hammer

        Picture 2: The use site of ZRJSC1200 cluster down-the-hole hammer

        日韩乱码人妻无码系列中文字幕| 不打码在线观看一区二区三区视频| 天天做天天摸天天爽天天爱| 亚洲最大在线欧美精品| 人妻中文字幕不卡精品| 色呦呦中文字幕在线观看 | 久久精品国产99久久香蕉| 蜜桃网站视频在线观看| 国产不卡一区不卡二区| 中文字幕午夜五月一二| 久久亚州av午夜福利精| 国产亚洲精品久久一区二区 | 日本婷婷色伊人婷婷视频| 青青草免费激情自拍视频| 成年在线观看免费视频| 日本国产成人国产在线播放| 亚洲精品乱码国产精品不99| 一亚洲一区二区中文字幕| 色天使色偷偷av一区二区| 亚洲国产成人精品综合色| 一区二区三区熟女人妻| 午夜一区二区三区在线视频| 亚洲日韩精品一区二区三区| 中文第激情无激情码激情| 少妇熟女av一区二区| 二区天堂中文在线最新版| 手机在线观看的av网址| 欧美多人片高潮野外做片黑人| 超碰一区二区三区在线| 国产第一精品福利在线| 国产超碰av在线播放| 免费观看在线视频一区| 大陆av一区二区三区| 女同国产日韩精品在线| 国产一区二区欧美一区二区| 天天躁夜夜躁狠狠躁婷婷| 91久久综合精品久久久综合| 久草热视频这里有精品| 国产婷婷成人久久AV免费高清| 老湿机午夜福利在线观看| 熟妇人妻一区二区三区|