Pipe insulation material:

    The surface of the fiberglass needle mat can apply with different materials to use in variety insulation product such as fiberglass cloth, silicon cloth, foil or plastic, and can be used as the heat insulation、protection for under ground pipe at power station, petrochemical industry.

Fibreglass Needle Mat Property

Thermal and Optical Properties	Fiberglass is inorganic fiber and will not combustion
	Thermal Expansion Coefficient：4.8*10-6cm/cm/℃
	Specific heat：0.19cal/g℃
	Thermal conductivity Coefficient： 0.040w/cm.k
	Heat Resistant Temp: 700℃
	Conversion Rate（25℃）：1.55
Mechanical Properties	Fiberglass has high tensile strength and good stability in length
	Tensile Strength：350kg/mm2
	Elastic Modulus：7300kg/mm2
	Horizontal Tensile Strength：35.6N/50mm
	Vertical Tensile Strength：97.2N/50mm
Conductance	Fibreglass have good electric insulation
	Permittivity：102Hz104Hz-6.32,  1010Hz-6.11
	Loss Tangent: 102Hz-0.0042,   102Hz-0.006
	Volume Resistivity：1010Ωcm,
Corrosion	Fibreglass will not absorb water, will not contribute to metal corrosion and will not decay

Fiberglass Chemical Composition（Weight％）
SiO2	Al2O3	CaO	MgO	B2O3	Impurity
					R2O	Fe2O3	Other
54.1±0.5	14.6±0.4	16.6±0.3	4.6±0.3	8.8±0.5	＜0.8	＜0.5	Allowance

Fiberglass Thermal Conductivity：

Temperature（℃）	25°	100°	200°	300°	400°	500°	600°	700°
Thermal Conductivity （kcal/mhr℃）	0.030	0.037	0.048	0.058	0.076	0.094	0.112	0.16