[Class : 6] Couplings Of Metal For Pipes; Pipe Couplings Of Metal; Metal Connectors For Pipes; Connectors Of Metal For Pipes; Couplings And Joints Of Metal For Pipes; Metal Pipe Couplings; Sucker Rods, Couplings, And Sub Couplings Made Of Metal; Anchor Bolts Of Metal; Anchor Plates; Anchoring Devices Made Of Metal; Anchors; Angle Valves Of Metal, Other Than Parts Of Machines; Connector Anchors Of Metal; Couplings Of Metal For Chains; Couplings Of Metal For Fire Hoses; Drain Traps [Valves] Of Metal; Manually Operated Metal Valves, Other Than Parts Of Machines; Metal Connectors For Decking And Decking Joists; Metal Tubing And Tubing Couplings For Joining And Terminating Pipes; Metal Valves For Controlling The Flow Of Gases In Pipelines; Rods Of Metal For Brazing And Welding Including Those From Alloy Steel And Titanium; Structural Joint Connectors Of Metal; Tubular Sections Of Metal For Anchor Sleeves; Valves Of Metal Other Than Parts Of Machines Including Those From Alloy Steel And Titanium; Forged, Machined, And Threaded Metal Components For Use In Oil And Gas Extraction; Metal Connectors, Fittings, And Joints For Pipelines And Downhole Applications; Forged And Heat Treated Metal Rods And Parts; Metal Tubes, Sleeves, And Couplings For Mechanical Assemblies