... :Q235,A105,ST37.2,20#,16Mn 3.Type:Flat, Slip-on,Bind ,Welding neck etc. LOOSE FLANGE1.Carbon steel flange with ... electroplate, powder coating and so on.6.Varieties: threaded flange, slip-on flange (SO), socket welding flange, lap joint flange (LJF ... flange, pad type flange, loose hubbed flange, welding plate flange, welding neck collar, welding-on collar, loose plate flange, companion flange and so ...