Carbon Steel Flange Types:WN,SO,BL,Plate,SW Materials:CS,SS,Alloy steel Standards:ANSI,EN, ... ,Non-standard Carbon steel flangesproducts descriptionTypes of Flanges: WN, SO, BL, Plate, Threaded, Socket Welding and other Special Shapes Materials: a ... ) As per customers' requestedCertification:ISO9001-2000/TUVDifferent accessories are available BL carbon steel flange