... performance measures: Temperature range: -183~+105°cWater vapor transmission: 1.16*10Thermal conductivity values: 0.036w/mkFire performance with BS ... : wall thickness (normal)in(mm)1/4",3/8",1/2",3/4",1",1-1/4",1-1/2",2"(6,9,13,19, ... 25,32,40,50)inside diameterin(mm)1/4 ... 6" IPS(6 ID to 168)lengthft(m)6',6.82'(1.83,2)About the Thermal Insulation Tube inner size ≥ ...