Heat insulating glass wool pipe shell is tubular heat insulating tube cured and formed after heating centrifugal glass cotton pad to which phenolic resin adhesive agent is applied.
保温玻璃棉管壳为离心玻璃棉毡施加酚醛树脂粘结剂加温固化成型的筒状保温管材。
3
The quantity of carbon added shall be not less than 1.5kg per each m3 space, after adding carbon, pipe or header shall be sealed with heat insulating cotton etc.