I-ASTM A182 F904L Flange iyinsimbi engelona engazinzile yensimbi engenacala ngokuqukethwe okuphansi kwekhabhoni. Le nsimbi ephakeme engenacala ingezwe ngethusi ukuthuthukisa ukumelana kwayo nokunciphisa ama-acid aqinile, njenge-sulfuric acid. Insimbi nayo iyamelana nokugqwala kokugqwala kokuqhekeka kanye nokugqwala kwe-crevice.
