screw gate jack 螺旋机门油缸
Country Helix Screw Gate 代购美国专柜正品
screw gate valve 螺旋闸阀
screw gate lifting device 螺旋式闸门启门机
ROLLBALL SCREW GATE VALVE 滚珠丝杠式平行闸板阀
Aerating screw gate 充气螺旋闸门
inside screw gate valve 内螺纹闸阀
gate screw 闸门螺旋
If the consequence of the rope coming out of the krab would be catastrophic, a screw gate krab must be used;
如果绳子脱出钩环的下场很凄惨，一定要用带锁钩环；
LZ series screw gate is used in top silo, bottom silo, inlet and outlet etc. of building material, metallurgical, ore, electric power, chemical industry, glass, light industry and foodstuff etc.
LZ系列螺旋闸门用于建材、冶金、矿山、电力、化工、玻璃、轻工、粮食等行业的库顶、库底及进出口等。 是控制流量变化较大，启动频繁，切断迅速的理想设备。
Non-rising-inside screw stems are used in bronze and iron gate valves.
暗杆-内螺纹结构用于青铜和铸铁闸阀。
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