ASTM SS316L 12" cl300 pipe bore flange 1) material :stainless steel 2) standard :ANSI 3) OD :1/2"-100" 4) press :CL150-CL600 ASTM SS316L 12" cl300 pipe bore flangesize1/2"''~48''TypeLap-Joint Flange (LJ), Socket-welded Flange (SW), Slip-on Flange (SO), Welding-Neck Flange (WN), Threaded Flange (TH), etc.American SeriesCLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS ...