Hot-expanded seamless pipe is a hot-expanded pipe that we often say. A pipe with a relatively low density but a strong contraction can be referred to as a heat-expanded pipe. Oblique rolling
Law or drawing method
The diameter of a large pipe
Aboriginal tube finish rolling process. The thickening of steel tubes in a short period of time can produce non-standard, special models of seamless tubes with low cost and high production efficiency.
Development trend in the field of pipe rolling.
China's current thermal expansion seamless tube production standards:
Thermal expansion seamless steel tube: GB3087-1999
Hot expanded seam steel pipe (seamless steel pipe): GB/T3091-2000.