Results 21 to 30 of about 536 (159)
Metals, 2020 Heavy gauge pipeline steels experience a low qualification in drop-weight-tear test properties because of the low cooling capability of conventional thermomechanical controlled processing.
Xue-qiang Wang +3 more
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Precipitates in Nb and Nb–V Microalloyed X80 Pipeline Steel [PDF]
Microscopy and Microanalysis, 2013 AbstractPrecipitates in two X80 pipeline steels were studied by transmission electron microscopy equipped with an energy filtering system. The steels are microalloyed with niobium and niobium–vanadium (Nb–V), respectively, and produced by continuous hot rolling.
Zhongyi, Li +3 more
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International Journal of Electrochemical Science, 2018 The corrosion behavior of X80 pipeline steel in 3.5 wt.% NaCl solution and simulated Dagang soil solution under different alternating current (AC) electrical densities was studied using the weight loss method, and was tested and analyzed using the ...
Xinhua Wang +3 more
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You-qi chuyun, 2020 China-Russia Eastern Gas Pipeline is characterized by ultra-large diameter, high grade steel (X80) and high pressure rating. It is located in the area with geologically active permafrost and semi-permafrost zones in the north, where is prone to ...
Yukun LI +4 more
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Study on Improving the Performance of X80 Pipeline Steel
DEStech Transactions on Engineering and Technology Research, 2017 This paper analyzes the methods of improving the performance of X80 pipeline steel. In the process of manufacturing piping, the right temperature of coiling the steel can improve the comprehensive mechanical properties of X80 pipeline steel. The proper cooling rate can make heat affected zone get the good performance.
Yan Liu +3 more
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Influence of operation condition on in-service welding temperature field of X80 natural gas pipeline
You-qi chuyun, 2022 In order to study the influence law of natural gas transportation parameters on temperature field in the heat affected zone of in-service welding in X80 natural gas pipeline, the X80 natural gas pipeline with a diameter of 1 422 mm and a wall thickness ...
Wangyou ZHU
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You-qi chuyun, 2020 In the China–Russia Eastern Gas Pipeline Project, large diameter (OD 1 422 mm), high pressure (12 MPa) and high grade steel (X80) pipelines were used to transport huge amounts of natural gas, so as to meet the needs of energy strategy.
Yunlan YANG +7 more
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Journal of Materials Research and Technology, 2023 The stress corrosion cracking (SCC) behavior of X80 pipeline steel under Desulfovibrio desulfurican (D. desulfurican), alternating current (AC) and cathodic protection (CP) was studied by the constant load tests and slow strain rate tensile (SSRT) test ...
Qi Fu +5 more
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Safety assessment on girth welds of large-diameter X80 pipelines in water network area
You-qi chuyun, 2023 As the soil in the water network area is soft and has large water content, it is very easy to settle, which applies an axial load to the pipeline, and the girth weld under the action of tensile load has a higher risk of failure.
Yuqing LIU +5 more
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International Journal of Electrochemical Science, 2017 In buried pipeline steel, soil environmental factors cause corrosion, which greatly affects the safe operation of pipe networks. The effects of HCO3− on the corrosion behaviour of X80 pipeline steel in Liaohe Oilfield simulated soil solution was ...
Fei Xie +4 more
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