STF28-STG47 DN16 STF28-STG47 DN25 Test certificate for STF28-STG47 DN16 and STF28-STG47 DN25 130 K 3.730.062 3.740.014 160-750, MFR / MK series obsolete MKG V 160.750-2 050 100 DN40 PAB423- 1 obsolete, replaced by Typ PAB 523-I;HEAT EXCHANGER;;;; PAB 423-I Typ PAB 523-I DN8PN350D DN250 - ANSI-CLASS 600-RF (0855227) 855227 9157340 MATERIAL-TEST CERTIFICATE