... are welding and threaded joint.The flange faces are made to standardized dimensions and are typically “ flat face”, “raised face ... joint”, “ socket weld”, “threaded” and also “blind”.We export to America, Canada, Germany, Spain,nertherland ,Russia, Italy ,U.A ... ,sea-worthy plywood pallets with polyethylene film or steel cases or as customers request. We can produce high quality and best price Flange