91视频免费视频I国产超碰在线观看Iav黄色国产I天天色视频I日韩天天综合I欧美狠狠操I91在线亚洲I久久免费视频5I丝袜美腿一区I国内精品中文字幕I成人午夜网址I亚洲一区二区三区在线看

        Production guarantee:
        Design and manufacture in accordance with German Rexroth hydraulic cylinder technology and standards;
        Process cylinder bore using German deep hole boring machine;
        Grind the piston rod using German abrasive belt grinding center;
        Process cylinder parts such as cylinder head, bottom, etc. using German drilling, milling and boring center;
        Process the piston, guide buffer ring, etc. using Japanese turning center.
 
       Manufacturing standards:
       referenced German DIN24 346 and SMS standards;
       ISO4413;
       GB3766-83: General technical requirements for hydraulic cylinder system;
       GB7935-87: General technical requirements for hydraulic components.