Abstract: A refractory insulator for insulating the joint between a long skid pipe, a supporting crossover pipe at right angles, and a riser for supporting both. The insulator comprises two halves each having a top portion and two pivoted lower side portions. When the halves are abutted, and the pivoted lower side portions are wrapped around the crossover pipe, the insulator will effectively seal the joint between these two pipes at the point of support by the riser. The pivoted portions are formed by reticulated wires embedded along the inner surface of the insulator and which provide pivotal joints between the upper portion and two lower side portions. The gaps at the pivoted joints can then be filled with insulating grout material.

Abstract: A refractory insulating shield for water-cooled pipes in reheating furnaces and the like. The refractory insulating shield has an inner surface in which metallic mesh is partially embedded for reinforcing the shield. A portion of the mesh is exposed and devoid of insulating covering to provide a free pivot for two parts of the insulating shield. The shield may be of substantially trapezoidal cross-section and said free pivot enables mounting on any portion of the cross-rail without the necessity of sliding it onto the end thereof. A modification is to provide a two-part covering for only the lower half of the skid by having a readily detachable connection between the two parts.

Abstract: Skid pipe insulation for water cooled support piping in a reheating furnace comprising refractory complementary sleeves extending about 270.degree. around the cooling pipe. The sleeves are bolted together at one end and the other ends are provided with substantially U-shaped clips which are adapted to inter-engage with complementary clips integrally welded or otherwise secured to the outer surface of the cooling pipe, which clips also serve as cooling fins.

Abstract: Skid pipe insulation for water cooled support piping in a reheating furnace comprising refractory semicircular complementary sleeves having wire reinforcement embedded in the sleeve refractory material and wherein the wire may be prestretched and located on the inner surface of the refractory insulation to directly contact, metal-to-metal, the outer surface of the cooling pipe. The reinforcing reticulations of the wire are at an angle to the longitudinal axis of the refractory sleeve. Identical semi-circular portions are provided with interconnecting anchoring studs and eyes to reduce inventory and to enable stressing of the wire reinforcement simply by turning nuts of J-bolts, eliminating the requirement for welding of the reinforcing wire to the pipe. Longitudinal shoulders on the refractory protect the bolts from the effect of heat of the slab.