1. Zvinoenderana nechiyero cheindasitiri yemagetsi, marudzi eflange ndeaya: plate type flat-welded flange, butt-welded flange, integral flange, butt-welded ring-plate type loose sleeve flange, flat-welded ring-plate type loose sleeve flange. , flanged ring-plate type loose sleeve flange, flange cover. 2...
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