METHOD FOR PRODUCTION OF SEAMLESS PIPE, AND OXIDIZING GAS SUPPLY APPARATUS

摘要

Disclosed is a method for production of a seamless pipe, which comprises the steps of: applying a carbon-containing lubricating agent onto a mandrel bar; producing a base tube using a mandrel mill equipped with the mandrel bar on which the lubricating agent has been applied; and reheating the base tube in a reheating furnace. In the reheating step, an oxidizing gas is supplied to the inside of the base tube when the temperature of the base tube becomes 550 to 1000°C inclusive.