Pipeline insulation has to follow the pipe, so a preformed cylindrical product can reduce the cutting and fitting work that comes with flat material. The supplied data describe this product as mineral-fiber insulation made mainly from basalt and other natural minerals, formed for use on industrial, building, and ship pipelines.
Rock wool pipe is listed with thermal conductivity no higher than 0.044 W/(m·K) at an average temperature of 70℃±2℃. The product data also give an average fiber diameter limit of 6.0 μm, along with defined tolerances for length, width, thickness, and density. These values are useful when a project needs repeatable sections for many similar pipe runs.
Fire performance is documented as Class A(A1), with a furnace temperature rise no higher than 30℃, mass loss no more than 50%, zero sustained flaming, and gross heat value no more than 2.0 MJ/kg. The product is also described for boilers and pipeline systems in petroleum, chemical, metallurgical, shipbuilding, textile, and building work.
Before ordering rock wool pipe, the pipe outside diameter, insulation thickness, length, quantity, and any outer protective layer should be confirmed so the insulation sections match the actual installation. For field work, cut sections should fit closely around valves, supports, and changes in direction so the insulation layer remains continuous along the pipeline.