Steel billets of various dimensions and grades,Ĭross-rolling mills (cone type and barrel type piercing)Ĭooling and quick-change systems for piercing toolsĪssel mills, Plug mills, Hot pilger millsįrom the rolling mill to the dispatch area Production equipments of all process Starting material → Pipe Billet→ Heat Treatment → Straightening →Hydrostatic Test or Inspection → Marking → Warehousing Round Pipe Billet → Heating → Punching → Pipe Head Treatment → Annealing → Acid Pickling → Coating Oil → Multi-pass Cold Drawing Micro Tension Sizing or Reducing → Cooling → Straightening → Hydrostatic Test or Inspection → Marking → WarehousingĬold Drawn Process for Seamless Steel Pipe Round Pipe Billet → Heating → Punching → Three-Roller Skew Rolling, Continuous Rolling or Extruding → Pipe Detaching → Hot Rolled Process for Seamless Steel Pipe Thickness: 2.11mm-60mm ( SCH10, SCH20, SCH40, SCH80, STD, SCH120, SCH160, XXS)Īccording to different manufacturing(mfg), seamless steel pipe can be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe and extruded pipe. Seamless Steel Tubes for Boiler and Heat Exchangers Seamless Steel Tubes for Machine Structure Seamless Steel Pipes for Structural Purpose Seamless Steel Tubes for Elevated Temperature Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes Seamless & Welded Carbon Steel Pipes and Alloy Steel Pipes for Low Temperature Use Seamless Carbon and Alloy Steel for Mechanical Tubing Seamless Ferritic & Austenitic Alloy Steel Boiler, Superheater & Heat-Exchanger Tubes Seamless Medium-Carbon Steel Boiler and Superheater Tubes Seamless Cold-Drawn Intermediate Alloy Steel Heat-Exchanger and Condenser Tubes Seamless Carbon Steel Boiler Tubes for High Pressure Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes Seamless Carbon Steel Pipes for High Temperature Service Standards of seamless steel pipe API SPEC 5LĪ, B, X42, X46, X52, X60, X70, X80, PSL1 / PSL2īlack and Hot-Dipped Zinc-Coated Seamless Steel Pipes Seamless steel pipes are derived from solid steel that is in sheet or bar form and is formed into a solid round shape known as “billets” which are then heated and cast over a form such as a piercing rod to create a hollow tube or shell.The abbreviation of seamless steel pipe is smls pipe.
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