Small caliber thick wall steel pipe refers to the steel pipe with a small ratio of outside caliber to wall thickness. At present, the minimum caliber can reach 3mm and the minimum wall thickness can reach 1mm.It is mainly used for petroleum geological drilling pipe, cracking pipe for petrochemical, boiler pipe, bearing pipe and high-precision structural pipe for automobile, tractor and aviation.Small caliber thick wall steel pipe material includes: 10#, 20#.25#, 35#, 45#, 16Mn, etc.According to different production methods can be divided into hot rolling pipe, cold rolled, cold drawn pipes, extruded pipe, etc., hot-rolled seamless pipe production on automatic pipe rolling unit commonly, solid billet through inspection and clear cut into the required length, surface defect on the pipe billet perforation end face centering and then sent to the furnace heating on the punch punch in perforated revolve and progress at the same time, under the action of roll and head, pipe billet internal gradually formed cavity capillary, then sent to plug mill continue rolling finally after all the machine all the whole wall thickness, the sizing sizing machine, meet the specification requirements,Using continuous rolling pipe unit production of small caliber thick-walled steel pipe is a more advanced method, if you would like to get a smaller size and better quality seamless pipe, must adopt the method of cold rolling cold drawn or both combined cold rolling is usually conducted on two-high rolling mill, steel pipe in variable cross section round hole groove and fixed cone in the head of the ring groove rolling, cold drawing usually on a single or double chain chain cold drawing machine extrusion method is heated pipe billet in airtight extrusion cylinder hole rods and extrusion, extrusion from smaller extrusion die, this method can produce small caliber smaller in caliber thick-walled steel pipe.

Jinjiang City Changjiang steel pipe Industry Co., LTD. Specializes in the production and sales of small caliber thick wall steel pipe, Fujian seamless pipe, Fujian spiral pipe and shelf pipe. Welcome to inquire: 86-0595-82151777.