Get current pricing for Ketema,, KETEMA,-21946-ID Ketema, Inc. Stainless Steel Shell & Tube Heat Exchanger Nb#3533, Type I-r-4/beu/, Size 8-b-48, U910475a1, Shell Side Mawp 75 Psi @ 125 Deg. F, Tu . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: