Flange Thd RF FF Rtj Yellow Painted Hotsale From Pipe Fittings and Flanges Factory of China - China Grinding Ring Forging, Small Diameter Forged Ring | Made-in-China.com
Flange Faces - Raised Face (RF), Flat Face (FF), Ring-Type Joint (RTJ), Male-and-Female (MF), Tongue-and-Groove (TG)
7 types of flange sealing surface: FF, RF, M, FM, T, G, RTJ - tanghaivalve