Prefabricated heat preservation steam slip heating power pipe of steel bushing steel

The utility model relates to a heating power pipe, especially prefabricated heat preservation steam slip heating power pipe of steel bushing steel way, including the work core pipe and outer pillar of coaxial inner conductor installation, work core outside of tubes parcel has the heat preservation, curved layer board is installed to the bottom of work core pipe outside the heat preservation, the support is installed to the extrados of layer board, and the leg joint has a slide bar, the slide bar parallel with the axial lead of work core pipe, the inner wall bottom of outer pillar set up the arc cushion, the extrados of arc cushion pastes bottom the inner wall of outer pillar, the interior cambered surface of arc cushion is provided with the spout, the position of sliding groove position and slide bar relative, the slide bar be located the spout and form the sliding pair. The utility model provides a prefabricated heat preservation steam slip heating power pipe of steel bushing steel way, simple structure, wor