... -inch (DN15 to 1,600mm) Meets ASTM A182, A105, ANSI B16.5, B16.47, B16.48, B16.36, DIN2527, ... -inch (DN15 to 1,600mm)Meets ASTM A182, A105, ANSI B16.5, B16.47, B16.48, B16.36, DIN2527 ... , DIN2637, DIN2638, DIN2673 and BS4504 standardsPressure ratings: Class 150, 300, 600, 900, 1500 and 2500PN6, PN10, PN16, PN25, PN40 ... AT gmail COM Flat Flange with Class 150, 300, 600, 900, 1500 and 2500 Pressure Ratings