An example fluid delivery tubing for a high-temperature system may include a ceramic wall. The ceramic wall may include a low thermal conductivity porous composition. An impermeable coating may seal the ceramic wall. The impermeable coating may have a thickness of less than or equal to 200 microns.

An example fluid delivery tubing for a high-temperature system may include a ceramic wall. The ceramic wall may include a low thermal conductivity porous composition. An impermeable coating may seal the ceramic wall. The impermeable coating may have a thickness of less than or equal to 200 microns.

A glass tube for pharmaceutical containers and a manufacturing process for a glass tube are provided. The glass tubes are characterized by a homogenous and low alkali leachability on the inner surface.

A glass tube for pharmaceutical containers and a manufacturing process for a glass tube are provided. The glass tubes are characterized by a homogenous and low alkali leachability on the inner surface.