... made to standardized dimensions and are typically “ flat face”, “raised face”, “ tongue and groove” or “ ring joint” styles, ... -on”, “boss””lap joint”, “ socket weld”, “threaded” and also “blind”.We export to America, Canada, Germany, Spain, ... Malaysia , Japan, South Korea and Taiwan,so on.And we won praise and trust from customers. We can also ... . Where can I buy the high quality flange?Ring Flange