Garden Tools Include : Telescopic Garden Shears, Garden Shears,Hedge Shears,Garden Scissors,Garden Saw Garden Tools,Garden Shears,Hedge Shears,Garden Scissors SHANGQIU DING LIAN INTERNATIONAL TRADE CO. ,LTD , https://www.dingqitools.com The ball valve core must be turned during the production of the ball valve (Fig. 1). If the workpiece accuracy or surface roughness is not required, the product will leak after assembly. To this end, we have designed a special device for the worm gear drive. The rotating part of the chassis 9 is fixed on the lathe large carriage 11 (Fig. 2), its axis and the lathe spindle shaft