hot-rolled steel pipe

Detailed Product Description

 

     Hot-rolled seamless steel tubes, primarily through tension-reducing to complete, and tension-reducing process of a hollow base material without a continuous mandrel rolling process. In ensuring the quality of the mother under the premise of pipe welding, pipe tension-reducing technique is to pipe the whole heated to 950 degrees Celsius, and then by tension reducing mill (tension reducing mill a total of 24 times) rolled into a variety of OD and the thickness of the finished tube, use of this technique produces hot-rolled steel with ordinary high-frequency welded pipe are essentially the difference between the heating of the weld through the furnace of the parent microstructure and mechanical properties can be achieved exactly the same In addition, the through a multi-pass tension reducing mill rolling and automation make the dimensional accuracy of steel (especially tube-precision roundness and wall thickness) is better than the same seamless pipe.