which contains a body including a lower part with an external thread for screwing it into the pipe of the water supply belt of the sprinkler machine, ... RU NOVIKOV,RU MOTORIN 被引量: 0发表: 2021年 NOZZLE HEAD FOR CUTTING CONCRETE STRUCTURE PURPOSE:To vary a spray interval of super-high...
We also supply various types of standard screws, whether it is screws to sheet metal, wood, screw into concrete or security screw for license plate. Hot Sale Bi-Metal Screw Fastener SS304/SS316 Body + SS410/420 Point, Self Drilling/Tapping Roofing ...
The fastening element is used for screwing into predrilled holes in timber chipboard, or lightweight concrete components. The screw has deep helical fins (3) which project well beyond the shank (2). Two such helical screw threads can be provided on a commons shank with opposite helix angles...
SOLUTION: According to the channel repairing method, the panel 10 which is made of ultra-high strength fiber-reinforced concrete and has fixing bumps 11 formed on a rear surface thereof, is stuck to a channel bottom surface to secure a gap between the panel 10 and the bottom surface, and ...