... are mainly in production of the following products: 1. Pipe fittings. Such as elbows, tees, caps, ... bend etc. 2. Valves. Such as ball valves, gate vales, butterfly ... valves, check valves etc. 3. Flanges. Big size(800mm-4000mm), small size(15mm-750mm ... pipe. 5. Fasteners: Washers, bolts, nuts, screws. Flange (1/2"-24")