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During the design, installation, and inspection of pipelines, various minor issues that have been overlooked or not taken into consideration are often identified. These issues are collected and organized into a series; this list is being updated continuously. Everyone is welcome to actively participate in discussions. It’s a compilation post on common problems in Haichuan pipeline design – it’s still being updated, and discussions are welcome: https://bbs.hcbbs.com/thread-5705828-1-1.html ------------------------------------------------------------------ [Haichuan Chemical Technology Documents] How should the remote shut-off valves and check valves for liquefied hydrocarbon pumps be configured according to AQ3059?
[Common Issues in Haichuan Pipeline Design] – A compilation post; images and text are being updated. Feel free to join the discussion: https://bbs.hcbbs.com/thread-5705828-1-1.html (Source: Haichuan Chemical Forum (Hua Haichuan Liu hcbbs))
【Ten Years of Rapid Development in Chemical Processing Equipment】2857-2025: Domestic large-diameter valves make further progress; Jiangsu Shentong produces DN4100 large-diameter gate valves https://bbs.hcbbs.com/thread-5706877-1-1.html (Source: Haichuan Chemical Industry Forum (HCBBS))
【Ten Years of Rapid Development in Chemical Equipment】The first national \"5G+Industrial Internet\" smart coking system was put into operation in 2025 – a project with an annual production capacity of 3.6 million tons of compacted coke. https://bbs.hcbbs.com/thread-5706895-1-1.html (Source: Haichuan Chemical Forum (HCBBS))
【Ten Years of Rapid Development in Chemical Engineering Equipment】The submarine pipeline stability analysis software developed independently by CNOOC Engineering, 2862-2025, has obtained certification from the China Classification Society, filling a gap in this field. https://bbs.hcbbs.com/thread-5706988-1-1.html (Source: Haichuan Chemical Engineering Forum (HCBBS))
【Ten Years of Rapid Development in Chemical Equipment】After 13 years of trial production from 2863 to 2025, a breakthrough was achieved, breaking foreign monopolies! Successful trial production of 17-meter ultra-long ultra-high-pressure steel pipes in our country https://bbs.hcbbs.com/thread-5706989-1-1.html (Source: Haichuan Chemical Industry Forum (Hua Haichuan Liu hcbbs))
【Ten Years of Rapid Development in Chemical Engineering Equipment】The submarine pipeline stability analysis software developed independently by CNOOC Engineering, 2862-2025, has obtained certification from the China Classification Society, filling a gap in this field. https://bbs.hcbbs.com/thread-5706988-1-1.html (Source: Haichuan Chemical Engineering Forum (HCBBS))
【Ten Years of Great Development in Chemical Equipment】2865-2025: Turning Waste into Treasure! Shenzhen Institute’s 100-kilowatt oil and gas wastewater hydrogen production system converts wastewater into green hydrogen https://bbs.hcbbs.com/thread-5707067-1-1.html (Source: Haimen Chemical Industry Forum (HCBBS))
【Common Issues in Haichuan Pipeline Design】--Valves in confined spaces such as pits require extended operating mechanisms to reduce risks https://bbs.hcbbs.com/thread-5707433-1-1.html (Source: Haichuan Chemical Forum (Hua Haichuan Liu hcbbs))