The center sleeves of universal flange adaptors from DN50-DN600 are cast in ductile iron, and the center sleeves of universal flange adaptors from DN700-DN1200 are made in carbon steel. Both of them are coated with blue epoxy powder and sealed with EPDM sealing ring. The connection standard adapts to PN10/16 for a universal flange, which can reduce the cost of storage in your warehouse.
