... method of connecting pipe, valves and other equipment to form a pipe work System. Suitable for ... welding and threaded joint.The flange faces are made to standardized dimensions and are typically “ flat face”, ... joint”, “ socket weld”, “threaded” and also “blind”.We export to America, Canada, Germany, Spain,nertherland ,Russia, Italy ,U ... request. Where can I buy the high quality flange?Ring Flange