Research and Development of Large-sized Heavy-wall TP347H Stainless Steel Pipe

The Φ355.6 mm×42.8 mm large-sized heavy-wall TP347H stainless steel pipe has been developed by Pangang Group Chengdu Steel and Vanadium Co.,Ltd. by means of the process of billet centrifugal casting plus rolling with Pilger mill. Relevant testing and inspection results show that all the technical indexes of the said pipe are in compliance with the requirements as specified in ASME A 312,and that the pipe is of good properties, and fine homogeneity of both longitudinal and transversal properties. Thanks to the advantages of the billet centrifugal casting plus hot-rolling combined process,the research and development result is excellent. There is no doubt that the successful development of the large-sized heavy-wall TP347H stainless steel pipe is significant in speeding up production localization of large-sized heavy-wall stainless steel tubes.