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为适应市场需求，俄罗斯车里雅宾斯克钢管厂在426mm周期式轧管机组上开发出一系列热轧无缝钢管新品种。该厂过去仅按OCT8732和TY3-14-460-75标准生产325～426min×9～16mm的热轧钢管和325～465mm×13～75mm的锅炉钢管，而现在该厂已在426mm周期式轧管机组上生产出符合DIN1629和
In order to meet market demand, the Chelyabinsk Steel Pipe Plant in Russia developed a series of new varieties of hot-rolled seamless steel tubes on the 426mm cycle rolling mill. In the past, the factory produced 325-426 min × 9-16mm hot-rolled steel pipes and 325-465mm × 13-75mm boiler steel pipes in accordance with OCT8732 and TY3-14-460-75 standards. Now, the plant is already in 426mm cycle rolling pipes. The unit produces DIN1629 and