1.carbon and alloy steel pipe flanges 2.Material of Q235 , A105 , WP1 , WP9 ect. 3.Type : WN , SO, BL , SW , LJ and ... accoring to GB , ASTM , DIN standardsize: DN15--DN600type: WN , SO , BL , SW , LJ and THpacking : panit or any special needtime of ... , L/Ccontact person : Ms. Haphry Wu ; mobile:0086-13963583000 carbon steel flange