6, copper alloy valve: inokodzera PN≤ 2.5mpa mvura, mvura yegungwa, okisijeni, mhepo, mafuta uye mamwe midhiya, pamwe nekupisa kwe -40 ~ 250 ℃ steam medium, inowanzoshandiswa ZGnSn10Zn2 (tin bronze), H62 , HPB59-1 (ndarira), QAZ19-2, QA19-4(aluminum bronze).7, yakakwirira tembiricha mhangura: yakakodzera nom...
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