We are offering stainless steel tubes. It is available in a variety of compositions, most popular of which are astm-a-213, grade td-321. (16% cr, 8%n stabilized with titanium) and astm-a-213 grade td-347 (18% cr, 8% ni) stabilized with columbium. Either of these two may be used upto to 649oc. Care must be given to choice of welding rod to avoid brittleness in the welds.