Carbon Steel Backing Ring With Fusion Bound Epoxy (FBE) factory Taiyuan FF Flanges & Fittings Co., Ltd. is a professional manufacturer specializing in manufacturing Flanges and fittings . Our workshop covers an area of 200,000 square meters and there are more than500 employees. Our annual output has reached 50,000 metric tons. With 30 years'' production history, we have experienced...