Hot Rolled Seamless Steel Tube 28 Inch Water Well Casing Oil And Gas Carbon Seamless Steel Pipe

Hot Rolled Seamless Steel Tube 28 Inch Water Well Casing Oil And Gas Carbon Seamless Steel Pipe

Cold drawing (rolling) carbon steel seamless steel tube: round tube billet → heating → perforation → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → blank tube → heat treatment → straightening → water pressure test (flaw detection) → marking → storage
Cold rolled precision seamless steel pipe (GB3639-2000) is used for precision mechanical structure, hydraulic equipment or steel sleeve of high dimensional accuracy and good surface finish of a seamless steel pipe.
Cold rolled (dial) seamless steel pipe in addition to general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, other steel pipe, also includes carbon thin-walled steel pipe, alloy thin-walled steel pipe, stainless steel pipe, special-shaped steel pipe. The outer diameter of hot-rolled seamless pipe is generally greater than 32mm, and the wall thickness is 2.5-75mm. The diameter of cold-rolled seamless steel pipe can reach 6mm, and the wall thickness can reach 0.25mm. The outer diameter of thin-walled pipe can reach 5mm, and the wall thickness is less than 0.25mm. Cold-rolled seamless steel pipe is generally used in seamless steel pipe: it is made of 10, 20, 30, 35, 45 and other high-quality carbon bonded steel 16Mn, 5MnV and other low alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steel hot rolled or cold rolled. 10, 20 and other low carbon steel seamless steel pipe is mainly used for fluid transport pipeline. 45, 40Cr and other medium carbon steel seamless steel pipe is used to manufacture mechanical parts, such as automobile, tractor stress parts. The general use of seamless steel pipe to ensure the strength and flattening test. Hot rolled seamless steel tubes are delivered in hot rolled or heat treated condition. Cold rolled seamless steel tubes are delivered in heat treatment condition.