surface 20 of inner tubular 14 or another surface such as the surface of a connecting member 24 or 26 which may also be at a temperature of more than 400 degrees f in this location the getter material which is preferably activatable by heat of steam in space 28 absorbs both hydrogen permeating through the outer tubular wall and gases outgassed from the inner tubular 14 to increase the surface area of the getter material the getter material can for example advantageously be of a sponge form which is a form providing a large surface area and is commonly known to those of ordinary skill in the art to which this invention pertains or it may be provided on a corrugated metal strip shown at 32 in fig2 that surrounds and is adjacent the outer surface of inner tubular 14 the corrugated strip 32 may for example be iron or another metallic alloy with the getter material formed in a coating on the strip the getter material is advantageously titanium an alloy of titanium zirconium or an alloy of zirconium for absorption of hydrogen as well as other active gases getter material such as aluminum may be added for absorbing other active gases these getter materials may be activated or increased in activity at elevated temperatures typically the temperatures within space 28 to absorb the objectionable active gases that would otherwise migrate into space 16 in this way relatively inexpensive mild carbon steel can be used for constructing inner and outer tubulars without corrosion resistant diffusion coatings such as chromium or nickel plating or stainless steel this results in significant 34 savings 34 in manufacturing of the tubular apparatus 10 while.