58mm tri-element all glass vacuum tube

タイトルまたは説明

Feature: Assimilate the advanced *2 layers of spattering deposition of trivalent element technology, high borosilicate glass, gradual change of ALN/ALN-SS/CU selective complex absorptive coating. And these make vacuum tubes have high performance of absorptance and low reflection ratio. Through the interlayer, vacuum has a unique effect of thermo, with its temperature up to **0 Celsius degree of idle sunning, performing a strong heating ability. Specification: Length (nominal) ***0mm Outer tube diameter *8mm Inner tube diameter *7mm Weight 2.2kg Material Borosilicate Glass 3.3 Absorptive coating ALN/AIN-SS/CU Stagnation Temperature >**0 Celsius degree Absorptance >*3% Emittance <8% Maximum strength 0.8Mpa Resist cold **5 Celsius degree Resist hailstone *5mm Resist wind *0m/s Start-up temperature <=*5 Celsius degree