Small diameter seamless steel pipe production and production methods are varied, small diameter seamless steel pipe and large diameter seamless tube in the diameter of the size of a different type of steel pipe, because the caliber is relatively small, known as small seamless steel pipe. In the actual production will be because the caliber size will be adjusted caliber size, for small diameter seamless steel pipe is the same, how should we be a small diameter seamless steel pipe size slightly higher?
Small diameter seamless steel pipe forming process is the use of special expansion pipe, core mold (commonly known as mandrel) and heating device (commonly known as heating coil), so that the blanks placed in the mold in the push machine driven forward movement, In the process of heating and expanding. The diameter of the tube is smaller than the diameter of the pipe to be obtained, and the deformation of the blank at the inner arc is controlled by the core mold to compensate the other parts where the diameter is reduced due to the expansion. Small diameter seamless steel pipe forming process has a beautiful appearance, uniform wall thickness and continuous operation, suitable for mass production characteristics, thus becoming a carbon steel, alloy steel and stainless steel pipe expansion of the main forming methods. The opposite process is extubation. The thicker steel pipe with the process of stretching into a thin tube, with this process produced by the steel pipe called extubation. Materials are carbon steel, stainless steel and alloy steel.
