... flange faces are made to standardized dimensions and are typically “ flat face”, “raised face”, “ tongue and groove” or “ ring joint” styles, ... neck”, slip-on”, “boss””lap joint”, “ socket weld”, “threaded” and also “blind”.We export to America, Canada, Germany, Spain,nertherland ... A,E, Malaysia , Japan, South Korea and Taiwan,so on.And we won praise and trust from customers. We can also manufacture ...