Threaded Casing with Short/Long Round Thread or ButtressTubing with Threaded Non-Upset/Upset End and CouplingDrill Pipes with Welded-on Tool-Joints/Threaded EndLine Pipe with Plain End and BeveledBoiler Tubes/Heat Exchanger TubesCarbon Steel Tubes for General Structural PurposesPrecision Carbon Steel Tubes
Seamless Tubing and Couplings Hydrosulfide-Carbon Dioxide- and Cold-ResistantHigh Longevity Oil-Well Tubing and Interlocks of Production Strings for Corrosive MediaWear-Resistant Tool Joints for TubingThermodiffusion Galvanizing of Tubing CouplingsSeampless Tubing with Externally Upset Ends and Couplings Hydrosulfid- and Cold-ResistantDrill Pipes with Welded Tool Joints