tifab offer bar stock thermowells sleeves are designed to meet standards established by bsi, din, asme and other authorities; manufactured in-house from traceable exotic metals like titanium, tantalum, niobium, zirconium, nickel hastalloy b & c inconel, monel & its alloys. Availability [a] bar stock thermowell (i) screwed construction flat tip well for low pressure application.(ii) flange construction domed tip well for high pressure application. [b] fabricated thermowell (i) fabricated screwed.(ii) fabricated seamweld seamless sleeve.