Rock wool pipe sections for process pipework
Mineral wool pipe sections are the default for straight runs of process pipe. The specification questions are density, binder and how the sections close.
Rock wool is an inorganic mineral fiber made from basalt and dolomite, melted and spun into fiber, bound and cured into shape. Pipe sections are the formed product for pipework, sized to the pipe outside diameter so that the section closes onto the pipe wall and limits heat loss along the run.
GB/T 11835 covers rock wool, slag wool and their products for equipment and pipework. For petrochemical plant the design reference is SH/T 3010, which governs insulation design rather than the material alone.
What to pin down in an enquiry
Density, binder type, compressive behaviour at the closure joint and the service temperature range are the four items that decide whether a pipe section performs. On outdoor runs the cladding and the vapour barrier carry as much weight as the wool itself.
Reference note. Figures and standard references are indicative and do not replace the project specification, the current edition of the standard, or product test reports for the specific supply.