... rate ANSIANSI B16.5class150,300,600,900,1500,25001/2"-24"slip-on flange(SO)welding neck flange(WN)socket welding ... welding flange,threaded flanged,lap joint flange,blind flange,ring joint flange,long welding neck flangefree forgingsbody,body adapter, ... stem housing,trunning plate,seat ring,ringForging styleClosed die forgingopen die forging(free forging)Minimum ...