Ububiko nuwitanga ASTM A249 Tubing, ASTM A249 TP304, ASTM A249 TP316L, ASTM A249 TP304L.ASTM A249 UBWOKO 304 Igiciro.
ASTM A249 / A249M - 16a
Inomero yerekana ASTM igaragaza verisiyo idasanzwe ya ASTM.
249 = yahawe nimero ikurikirana
16 = umwaka wo kwakirwa kwambere (cyangwa, mugihe cyo gusubiramo, umwaka wanyuma wanyuma)
a = yerekana isubiramo ryakurikiyeho mumwaka umwe
Igihe cyo kohereza: Werurwe-14-2019