The utility model relates to
polyurethane heat preservation board technical field discloses a hidden fireproof
polyurethane heat preservation board, including
polyurethane board, the side of polyurethane board is sleeved and is installed the first plug -in iron box of one side is open, the side of polyurethane board away from the first plug -in iron box is sleeved and is installed the second clamping iron box of one side is open, the first plug -in iron box between second clamping iron box has the docking structure, the first plug -in iron box and second clamping iron box between being provided with clamping part, in the utility model, polyurethane board nests in the first plug -in iron box and second clamping iron box, can carry out
fire prevention through the first plug -in iron box and second clamping iron box, avoid the
erosion of the fire adhesion on the surface of rigid polyurethane board to it to through the first plug -in iron box and second clamping iron box protection polyurethane board, simultaneously, still can have good heat preservation function while having the fire -proof function, makes polyurethane board hide in the first plug -in iron box and second clamping iron box.