The chain is hinged with the clamp handle through the connecting plate, that is, one end of the chain is hinged with one end of the connecting plate, and the other end of the connecting plate is hinged with the clamp handle. The teeth at the front end of the clamp handle arc distributed in an arc. The chain type pipe at work, non articulated chain end is free, and the clamp handle is fixed or hinged, pipe clamping, rotating by friction between the pipe and winding its chain to achieve, and the torque by the meshing force of local cone and the front end of the clamp handle chain produced no, the clamp handle force on the pipe surface sites.
Therefore, the chain pipe wrench can not only the metal pipe, and pipe fittings, pipe fittings, ceramic thin-wall plastic pipe fittings for clamping, rotating, does not have a bite, no damage to the surface of the pipe.
A chain plate hand, also known as a chain clamp, comprises a clamp handle and a chain hinged at one end with the clamp handle, and the front end of the pliers handle is provided with teeth meshed with the chain
