In industrial piping, flanges are critical components used to connect pipes, valves, pumps, and other equipment. They are generally categorized by their design and their face type. I. Flanges by Design (Connection Method) : 1. Weld Neck Flange (WN) 2. Slip-On Flange (SO) 3. Socket Weld Flange (SW) 4. Threaded (Screwed) Flange 5. Blind Flange 6. Lap Joint Flange (used with Stub End) II. Flanges by Face Type (Sealing Surface): 1. Raised Face RF 2. Flat Face FF 3. Ring Type Joint RTJ 4. Tongue & Groove T& G We are K-TECH FLUID CONTROLS Manufacturer and Exporters of All types of flanges from INDIA.