Thermal expansion seamless tube

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 the steel pipe in a short period of time can produce non-standard, special models of seamless pipe, and the low cost and high production efficiency is the current state

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.