Results 31 to 40 of about 538 (176)
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
openaire +2 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Numerical simulation on strain capacity of welding joint of X80 pipeline with root welding crack
You-qi chuyun, 2022 Automatic welding technology is widely used in the field welding of large-diameter and high-grade steel pipelines in China. Welding defects such as misalignment and cracks caused by various factors have seriously affected the deformation and bearing ...
Feining YI +6 more
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Simulation analysis of X80 pipeline steel welding
Metalurgija, 2023 In order to improve the quality of welded joints and increase the service life of pipelines, ABAQUS finite element software was used to simulate the temperature field of 18,4 mm thick X80 pipeline steel in multi-layer and multi pass welding. The peak temperature of different passes was compared, and the change trend of temperature field in the welding ...
Li, M. M. +4 more
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Study on Repairing and Reinforcing Effect of Steel Epoxy Sleeve on Girth Weld Defects
Shiyou jixie, 2022 In order to study the repairing and reinforcing effect of steel epoxy sleeve on girth weld defects of X80 pipeline,ANSYS is applied to establish the nonlinear finite element models of X80 pipeline with girth weld defects and pipeline reinforced by steel ...
Yu Dongliang +4 more
doaj
Limit width analysis of X80 corroded pipeline pass through landslide
Zhongguo dizhi zaihai yu fangzhi xuebao, 2022 In view of the safety early warning problems involved in X80 corroded pipeline crossing landslide, it is proposed to take the limit width as the discrimination factor of pipeline safety state, establish a finite element model according to the specific ...
Peng ZHANG +3 more
doaj +1 more source
A Comparison of Cathodic Protection Parameters with High- Strength Pipeline Steels in Soil Solution
International Journal of Electrochemical Science, 2014 Cathodic protection is usually used to control the corrosion in service pipeline. The optimum cathodic protection potential (OCPP) becomes a vital part in order to get the best protective effect in the whole research of cathodic protection.
Xinhua Wang +3 more
doaj +1 more source