How to identify the quality of a glass wool pipe

Normally we will check below 3 points:

• The uniformity of thickness. Uniformity thickness will create thermal bridge, which will large reduce the effect of insulation.
• whether the hole of the pipe is in the center;
• Whether the density of the pipe can reach said density. This is important. Because density will affect the strength of the insulation. Ecoin glass wool pipe can bare a man standing on it.