Difference between cold drawn tubes and cold rolled tubes

Cold-rolled and cold drawn belongs to cold working process, but the molding process and the principle, process equipment, molding capability, for purposes are all different.

Cold rolling is the temperature at a temperature below the recrystallization method of cold rolled slab thickness needs; cold drawn is the use of force to pull the metal timber from the hole in the processing method. Should be said that both the dimensional accuracy and surface finish almost, because in standard, cold-drawn and cold-rolled tubes are generally uniform provisions, of course, the price is almost the same.

However, the difference is that for the small size of the pipe, cold drawing method must be used to produce it.

Cold drawn steel tubes for small sizes more suitable diameter of 150mm or more difficult to use than cold drawn up, there are no such large-diameter cold drawn tubes, the United States and South Korea are more common, drawing process better, seamless , so the price may be a little higher than the cold rolling.



Tech & Service of Seamless pipe

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.

How to make seamless pipe(seamless pipe process)?
Hot Piercing Workshop
Piercing process
The cross roll piercing and pilger rolling process in the size range from approx. 250 to 660 mm outside diameter.
Precision cold drawn steel tube production process
Pipe weld cracks
often follow different mechanisms can be divided into two types of thermal cracking and cold cracking.
How to calculate a steel pipe and tube theoretic weight
Calculate a steel pipe?
Pipe fittings are necessary to join together pipes, or to change the direction of an existing pipe.
Pipe beveling
Pipe beveling is the process where an angle is formed between the edge of the end of a pipe or tube and a plane perpendicular to the surface.
Steel pipe cutting machine
Pipe cutting
Cutting tools have a grinding wheel piece cutting machine (also known as toothless saw), hand saw, cutter and other hand tools.
Packing the steel pipes
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method.


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