1.Type---welding neck flange,slip-on flange,thread flange,blind flange,2.material---carbon steel 3.stand---ANSI ... ,BS,DIN 1.Type---welding neck flange,slip-on flange,thread flange,,blind flange,plate flange.2.material---carbon steel3.stand ... ---FOB,CFR or CIF) carbon steel pn16 flange pressure rating thread flange