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Boiler Tube A179 A192
ASTM A179——–Standard ng American Society for Testing & Materials
ay ginagamit para sa tubed heat exchanger, condenser at katulad na heat conveying equipments; Pangunahing Grado:A179
ASTM A192——-Standard of American Society for Testing & Materials ay ginagamit para sa mataas na presyon min. Wall kapal seamless carbon steel Boiler at Superheater tube; Pangunahing Baitang:A192
