Difference between Thermal Expansion of Seamless Steel Tubes and Seamless Steel Pipe

Thermal expansion of seamless steel tube is that we often say that the thermal expansion pipe, the density is relatively low but very strong contraction of the steel pipe, (seamless steel pipe) can be referred to as thermal expansion pipe. A method of expanding a pipe diameter by a cross rolling method or a drawing method; In a short period of time so that the outer diameter of the steel pipe can produce non-standard, special type of seamless tube, and low cost, high production efficiency, is the international trend of the field of rolling pipe.

Seamless pipe generally in the production of rolling mill unit also known as automatic pipe mill. The round bar, 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 machine to continue rolling. And finally by the whole machine are the whole wall thickness, by sizing machine diameter, to specifications.

Thermal expansion of seamless tube is a seamless tube, because you buy a 530mm tube, there is no such models, the largest seems to be 460MM, manufacturers only reheat a (re-processing), the general should be damaged The quality of the tube, of course, see what you do with the. Of course, the price is more expensive, because the two pass the process.