Density is low but the contraction strong steel pipe, seamless steel tube can be referred to as thermal expansion of the tube. Using method of skew rolling or drawing method of expanding tube diameter of a waste pipe finishing dth drill bits process. In a relatively short period of time to make steel pipe enlargement, can produce non-standard, special types of seamless tube, and low cost, high production efficiency, is the international development trend in the field of tube rolling.

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Thermal expansion pipe adopted two-step pusher set interchanged cone die hole enlargement technology, digital intermediate frequency induction heating technology, hydraulic technology in one, with its reasonable technology, low energy consumption, low investment, good product quality, wide range of raw materials and products specifications suitability, flexible variable low input production batch adaptability, replace the steel pipe industry the traditional drawing technology for hole enlargement.

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Our current thermal expansion pipe production standards:

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The thermal expansion of seamless steel pipe: GB3087-1999

Thermal expansion has a seam steel pipe (seamless steel tube) : GB/T3091-2000

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Thermal expansion alloy steel pipe application:

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Thermal expansion alloy steel pipe is widely used in aerospace, chemical construction, food, industrial control, medical, nuclear power plant, the development and production of oil and gas, transportation, and the seabed exploration and other fields.

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