【History of Haichuan Pipes】20211112 – Baoji Steel Pipe produced the steel pipes with the largest diameter currently in use by China National Petroleum, at 3448 millimeters
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On the morning of November 12, the first super-large-diameter steel pipe for the Yanhe-Huaihe Water Transfer Project of Baoji Steel Pipe Company, with a diameter of 3,448 millimeters and a wall thickness of 24 millimeters, was successfully produced at the Third Pipe Manufacturing Plant of the Pipeline Company. This is the largest-sized steel pipe currently produced by Sinopec.
Early records can be found on Bohai Equipment [History of Haichuan Pipes] 20171101 – Bohai Equipment’s production and export of welded pipes with a diameter of 3048 millimeters in Yangzhou: https://bbs.hcbbs.com/thread-3270238-1-1.html (Source: Haichuan Chemicals Forum)
【History of Haichuan Pipes】The summary post is being updated continuously; learn about the development process of various pipes at https://bbs.hcbbs.com/thread-3068575-1-1.html (Source: Haichuan Chemical Industry Forum)