... carbon steel pipe flanges 1.Size:1/2"-78", DN15-2000 2.material:CS,SS 3.Certifaction:CE,ISO,TUV 4.All standard carbon steel pipe ... flanges1) Product Name:carbon steel pipe flanges2) Type of Flange: SLIP-ON ... " , DN15- DN2000 4) Material of Flange: Carbon Steel Flange: A105,SS400, SF440 RST37.2,S235JRG2,P250GH, ... : 24,000 Tons per Year carbon steel pipe flanges