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Pipa Boiler A179 A192
ASTM A179———Standar American Society for Testing & Materials
digunakake kanggo exchanger panas tubed, condenser lan peralatan ngatur panas padha; Kelas Utama: A179
ASTM A192——- Standar American Society for Testing & Materials digunakake kanggo tekanan dhuwur min. Kekandelan tembok baja karbon mulus Boiler lan tabung Superheater; Kelas Utama: A192
