Abstract: A hot fluid-conducting pipe assembly, comprising an inner metal pipe through which flows a hot fluid,Support pins regularly arranged on and outwardly projecting from the outer surface of the inner metal pipe,Refractory of said coupling members fixed to the inner metal pipe by the support pins, each coupling members having upper and lower faces concentric with the surface of the inner metal pipe, trapezoidal side faces in the longitudinal direction of the inner metal pipe, and sectorial side faces in the circumferential direction of the inner metal pipe,Heat-insulating refractory blocks mounted between the coupling members and each having an underside portion provided with a cushioning layer formed of an elastic refractory material,A heat-insulating layer formed of an elastic refractory material and uniformly covering the upper faces of the coupling members and of the heat-insulating blocks, andAn outer metal pipe covering the heat-insulating layer.

Abstract: Wall structure of a hot fluid chamber, comprisingAn inner metal wall;A plurality of support pins regularly arranged on and projecting outward from the surface of the inner metal wall;A plurality of coupling members fixed to the inner metal plate by the support pins, each coupling member being of a truncated quadrangular pyramid shape and made of a heat-insulating refractory material;A plurality of heat-insulating refractory blocks mounted between the coupling members, each block having the underside portion provided with a cushioning layer formed of an elastic refractory material;A heat-insulating layer formed of an elastic refractory material and covering the surfaces of the coupling members and of the heat-insulating refractory blocks; andAn outer metal wall covering the heat-insulating layer.