... .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 ... coordinate measuring system, spectrograph, Optical Brinell hardness tester, tensile testing machine, air-gauge, Dial bore gauges, Inside Micrometer etc.Our advantage ...