... 2)heat treated alloy steel forging; Connector,Connector for Drill Pipe,Tool Joint Connector(for Drill Pipe) Characteristics:1) equivalent to API Standard; 2 ... tools. If you need our quotation, kindly reply to us for product detailed specification, special technical requirement ,quantity, preferred Terms, ... asap.Welcome to our manufactory to visit ! Connector, Connector for Drill Pipe, Drill Tool