We are looking for coated evacuated glass tubes of 100 mm (millimeters) or bigger by 1, 1.5 and 2 m (miters), these are used for water heaters but this is not are purpose. We want at least three coatings with copper on the inside and an insulation temperature of 320 0C or better. These glass tubes will be sent to Santa Barbara, California. Anyone with glass tubes please reply