Product Item: High Density Fireproof Rock Wool Pipe
Nominal Diameter: DN100
Inner Diameter (ID): 114 mm
Thickness: 40 mm
Length: 1000 mm
Density: 100 kg/m3
Material: Chemically Neutral, free of soluble sulfur salts, low in chlorine ions
Source: https://www.landee.cn/fireproof-rock-wool-pipe-dn100-114-mm-40-mm-1000-mm.html