Layer-type optical cable with steel wire carried secretly in sheath

The utility model provides a layer winding type optical cable having a steel wire embedded sheath, which comprises a cable core, a polyethylene sheath that is covered onto the cable core, a central reinforcing steel wire arranged along the cable core axle of the cable core, at least one loose sleeve that is positioned on the circumference of the central reinforcing steel wire, a charging ointment layer that is positioned between the loose sleeve and the central reinforcing steel wire, at least two loose sleeve optical fibers positioned inside the polyethylene sheath. The utility model not only can improve the pressure resistant strength of the optical cable and the extension resistant strength of the sheath as well as the lower temperature performance, but also can save the pipeline resources and reduce the communicating project constructing cost.