Screw Clamp
Construction
( 1 ) Hoisting and conveying work
General steel materials including H-beams, I-beams, steel sheets, channels, angles and steel piles, and also steel framed beams, columns, welded structures, and other structures.
( 2 ) Lowering devices
Electric chain blocks, hoists, pulleys and other lowering devices.
( 3 ) Dragging work
Dragging steel plates for spreading on the ground, dragging structures, and so on.