女国产女AV百合大片在线观看_异族女人性变态另类_草莓视频最新版网站下载免费_主播国产 欧美_液液酱白丝JK开腿自慰_国产片亚洲永久免费AV_中文字幕人妻毛片av_娇喘h校园h乳尖h_日韩动漫在线播放一区_艳妇乳肉豪妇荡乳后续黄蓉

Hotline:13771485234
 
CHINESE ENGLISH  
 
Advanced and complete …
Concrete delivery cyli…
Hydraulic cylinders
S Valve
Wear sleeve
Transition sets
 
 
NEWS
Concrete pump concrete Why fight when called?
Publisher:admin  Time:2013/10/25 15:14:16  Click:2480

When playing some concrete pump concrete will be issued a sharp cry, the sound mainly from transport tanks, but check the piston, no strain, the lubrication system normal reasons for different heart cylinders and transport tanks, transport cylinder wall thickness is thin, in operation, the fuel tank to produce resistance, causing vibrations to pass out through the delivery cylinder, purring.

Pre:How to solve the problem of concentric cylinders and transport cylinders?
Next:Our second-generation delivery cylinder and the first generation than have those advantages