... .Flange Type:SOP, SOH, BL, PL, WN, SO etc.The flange standard: 1.JIS Standard: JIS B 2220, JIS 2216, JIS 7805, JIS ... , PL, WN.2.DIN Standard: WN, SO, BL.3.ANSI Standard: SO, WN, SW, Threaded, Lap Joint, Ring Joint.4.JPI Standard: SO, WN, SW, Threaded ... , Lap Joint, Ring Joint.5.Nonstandard FlangesThe certificate of the flanges.Because we had a ...