... ,stainless steel flanges) 1.Materia:304,316,347,321,301,625,800 2.Standard: ASME, ANSI, API, JIS, JPI,MS Flanges(flange gasket ... ,stainless steel flanges)Threaded Flanges standard: ANSI/ASME B16.5, ANSI B16.47,AWWA C207... API, >Production size(NPS): 1/2 inch ... in any directionWelcome to send us an inquiry. Slip-On Welding Flanges 625