1.Material:Carbon steel 2.Size:1/2"-24" 3.Standard:ANSI DIN UNI JIS 4.Type:WN SO SW PL BL LJ 5.ISO9001 approved size1/2"-24"TypeLap-Joint Flange (LJ), Socket-welded Flange (SW), Slip-on Flange (SO), Welding-Neck Flange (WN), Threaded Flange (TH), Blind flange etc.American SeriesCLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500European SeriesPN 2.5, PN 6, PN 10, PN 16, ...