copper screw hook 紫铜螺丝钩
copper-plated iron screw ring 镀紫铜铁吊环螺钉
copper r screw 紫铜螺丝
copper r screw hook 紫铜螺丝钩
Main products: copper screw, rivet, hexagon copper post, push pull connector and communication connector etc.
主要产品：铜钉、铆钉、六角铜柱、接插件、通讯连接器等精密五金零件。
The fire pump jointer of the utility model comprises an iron screw cap, a copper ring, and an iron body pump.
本实用新型解决了目前消防水泵接合器中铁螺旋盖和铁制体泵接口处的铜圈容易被盗窃的问题。
The swinging rotating joint consists of spherical body, thread joint sleeve, locking screw nut, large copper washer and two spherical rings.
本发明摆动旋转接头由球型接头体，螺纹接头套，锁紧螺帽，大铜垫和两个球面转环构成。
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