... years exporting experience 2.Specification:1/2"-40" 3.Standard:DIN JIS ANSI 4.Certificate:GL BV DNV Forged Steel Flange:1 ... 2634, DIN 2635.3.ANSI Standard: ANSI B 16.5.4.JPI Standard: JPI 7S-15-84.5.API Standard: API6056.Nonstandard FlangesThe flange ... .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 ...