... , DIN2635, DIN2636, DIN2637, DIN2638, DIN2673 and BS4504 standardsPressure ratings: Class 150, 300, 600, 900, 1500 and 2500PN6, PN10, PN16, ... and 20KMaterials: carbon steel, stainless steel and alloy steelPrinting: yellow/black print, oil or zincPackaging: plywood casesSpecial designs are availableIf ... me: Longjunpipe04 AT gmail COM Flat Flange with Class 150, 300, 600, 900, 1500 and 2500 Pressure ...