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Boiler Tube A179 A192
ASTM A179——–Standard of American Society for Testing & Equipment
amagwiritsidwa ntchito pa chubu kutentha exchanger, condenser ndi zida zofananira kutentha kufalitsa;Main Grade: A179
ASTM A192——-Standard of American Society for Testing & Equipment imagwiritsidwa ntchito pa kuthamanga kwambiri kwa min. Wall makulidwe opanda mpweya wa carbon steel Boiler ndi Superheater chubu;Main Grade: A192
