... ,DN175 3.Type:ZX flange,SK flang Weld-on collarsInner diameter: 2", 2 1/2", 3", 4", 5", 6"Outer diameter: 3.06 ... ", 3.45", 4.18", 5.18", 6.18", 7 ... .2 L/C irrevocable L//C at sightPackingNo.1 Wooden boxNo.2 Iron boxNo.3 Seaworthy packing, according to the customer demand. Weld-on ...