... 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”, ... socket weld”, “threaded” and also “blind”.We export to America, Canada, Germany, Spain,nertherland ,Russia, Italy , ... or as customers request. Where can I buy the high quality flange?Ring Flange