... "-48" 2)Connection:Butt Weld & Socket Weld & Thread 3)Standard:ASME,ANSI,BS,DIN,JIS,etc. 4)ISO 9001:2008 SO ... 2500European Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160 ... City,Hebei Province,China Factory Certificate Test Equipment Production Equipment asme b 16.47 carbon steel forged flange