Seamless Steel Tube Plant Introduction of seamless steel pipe production methods

Seamless Steel Tube Plant Introduction of seamless steel pipe production methods
Seamless steel pipe is the more common type of steel pipe, then, seamless steel pipe production methods is how? We consulted Bartlett Metal Materials Co., Ltd. of the technical staff. Look at the next technical staff is how to say.
According to the seamless steel pipe production methods of different seamless steel pipe can be divided into hot-rolled tube, cold-rolled tube, cold drawn tube, extrusion tube.
Hot-rolled seamless steel tubes are generally produced in the automatic rolling pipe unit. The solid tube blank is inspected and removed from the surface defects, cut into the required length, in the tube end of the perforation end of the centering, and then sent to the heating furnace heating, perforation in the punching machine. In the perforation at the same time continue to rotate and move, in the role of the roll and the head, the tube gradually formed within the cavity, said capillary. And then sent to the automatic rolling mill on the succession of rolling. And finally by the whole machine are the whole wall thickness, by sizing machine diameter, to specifications. The use of continuous rolling mill production of hot-rolled seamless steel pipe is a method to improve the older generation.
To obtain smaller size and better quality seamless steel pipe, must use cold-rolled, cold drawn or a combination of the two methods. The cold rolling is usually carried out in a two-roll mill, where the pipe is rolled in a circular orifice formed by a tapered hole and a non-moving tapered head. Cold drawing is usually carried out at 0.5 to 100T single-chain or double-chain type.
The extruding method is to place the heated tube in a closed extruding cylinder which is moved with the extruding rod to squeeze the extrudate from the smaller die hole. This method can produce smaller diameter pipe.

Abstract from Tianjin Xinyue Steel