Rockwool (Mineral Wool) pipe cover/ sections 

The pipe covers are suitable for thermal insulation of piping works operating at service temperature 350C, and used in air-conditioning systems, flange and central-heating. Also be ideal for enhancing sound absorption of pipelines in conditions where liquids, air or solid particles are transported through the pipelines at high velocities. 
Each section has a kerf for easy installation. 

Availability: 
Inside Diameter: 18 ~ 850mm; Thickness: 25 ~ 300mm; 
Length: 1000mm 
Density: 100 ~ 150kg/m3 Pipe covers are no-combustible, and high water-repellent performance, non-hygroscopic. 
Rockwool is neutral (PH 7) or slightly alkaline. It will not normally support the growth of molds, fungi and bacteria.