1)Size:1/2"-48" 2)Connection:Butt Weld & Socket Weld & Thread 3 ... flanges are easy to use in fabricated applications.Size1/2"-48" DN15--DN3000MaterialCarbon steel, stainless steel and alloy ... Weld & ThreadPressure American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500European Series: PN 2.5, PN 6, PN 10 ... Test Equipment Production Equipment flange 1500 class