... )Size:1/2"-48" 2)Connection:Butt Weld & Socket Weld & Thread 3)Standard:ASME,ANSI,BS,DIN,JIS,etc. 4)ISO ... 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500European Series: PN 2.5, PN 6, PN 10 ... ,Hebei Province,China Factory Certificate Test Equipment Production Equipment flange 1500 class