The utility model relates to a chain type wrench, also known as a chain clamp, which comprises a handle and a chain which is hinged with one end of the handle.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 handle. The teeth at the front end of the pliers handle arc distributed. 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.

1 high quality chrome vanadium steel precision forging, forging a whole, overall heat treatment.
2 gear tooth jaw induction hardening, unique design, can be both positive and negative rotation.
3 used to fasten or dismantle the larger metal pipe work, for the pipeline installation.