forged weld neck flange SCH STD CLASS 150

forged weld neck flange SCH STD CLASS150 1.Size:3/8"~160"DN10~DN4000 2.Pressure American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500 European Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400