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Jan 04, 2018 · Based on the analysis of cracking toughness and crack arrest toughness of X80 steel grade pipe and the analysis of pipeline running safety, it is safe and feasible to replace X70 grade pipe with thin wall thickness X80. (4) X80 pipeline steel pipe in the international application will be more extensive. The implementation of X80 pipeline steel pipe engineering applications is very necessary. Proposed in the future large-diameter high-pressure gas pipelines preferred X80 pipeline. Characterizations of damage-induced magnetization for X80 The softening behavior of higher nioubium content X80 pipeline steel, International Journal of Modern Physics B 23 (2009), 1751-1757.  Lu S.H., , Ling X., and Zhang J.C., Investigate on the proporties of X80 pipeline steel damaged by high temperature, Procedia Engineering 130 (2015), 609-616.
Union Victory offers a huge selection of api 5l psl2 x80q line pipe with cheap price. Our factory is one of leading api 5l psl2 x80q line pipe manufacturers and suppliers in China, please be free to buy or wholesale our products in stock. Corrosion Behavior of API 5L X80 Steel in the Produced High-strength low-alloy steel is used in pipelines, which transport oil/gas and also produced water in the process of the secondary recovery of oil. This paper investigates the corrosion of X80 steel after immersion in static systems (biotic and abiotic). The corrosion rate, the corrosion morphology and the hardness of the coupons were
In this work, X80 pipeline steel produced in China was used. The soil solution simulated a alkaline soil in Daqing City. OCP, potential of stray current-induced corrosion, polarization curve of X80 steel under tensile stress (hereinafter called T S) were measured, the influence law of stress on Corrosion effect of Bacillus cereus on X80 pipeline steel The corrosion of X80 pipeline steel in the presence of Bacillus cereus (B. cereus) was studied through electrochemical and surface analyses and live/dead staining. Scanning electron microscopy and live/dead straining results showed that a number of B. cereus adhered to the X80 steel. Electrochemical
Corrosion behavior of X80 pipeline steel under the application of various waveforms AC was investigated in concentrated carbonate/bicarbonate solution by electrochemical measurements, immersion tests, and slow strain rate tensile tests. Under the application of AC current of various waveforms, the corrosion potential shifts negatively and the Effect of Inclusion on Pitting Corrosion of X80 Pipeline SteelThe influence of inclusion on pitting corrosion of X80 pipeline steel was investigated by using electrochemical test and atomic force microscope. The results indicated that corrosion potential of X80 pipeline steel sample with higher grade inclusion was lower, and decreased significantly with chloride ion concentration increasing. Inclusion was not conducive to corrosion resistance of X80
The X80 pipeline steel for the west to east gas transmission project was successful produced, based on the hot strip mills equipment advantage. However, the impact toughness was unstable during the production. In this research, optical microscope, scanning electron microscopy (SEM) and energy dispersive analysis (EDS) test were used to study the relationships Experimental Research on Fatigue Properties of X80 Jan 27, 2021 · Abstract. In recent years, many synthetic natural gas demonstration projects have been put into operation all over the world, and hydrogen is usually contained in synthetic natural gas. X80 is the most commonly used high-grade pipeline steel in the construction of natural gas pipelines. The compatibility between high-grade pipeline steel and hydrogen directly affects safety and reliability of long-distance pipelines.
The fracture toughness of X80 pipeline steel, which has been widely used in China, plays a key role in pipeline safety insurance. In order to know the accurate fracture toughness of X80, the methods of acoustic emission and high K ratio have been carried out to judge the initiation of crack propagation and improve flatness of fatigue pre-crack front. High Grade Steel Pipeline for Long Distance Projects at reached the conclusion that the use of X80 was a proven technology, even with all of the risks attributable to the use of the higher strength steel. However, the reason why X80 had so far not been employed worldwide for more pipelines was not due to any valid technical reasons, nor was it due to the absence of sufficient economic incentive.
Feb 17, 2021 · The current state of the art uses X70 or X80 line pipe steel grades (yield stress of 483 and 550 MPa, respectively) with a range of different steel chemistries which have a good combination of strength, toughness, and cost-effectiveness. New Development of High Grade X80 to X120 Pipeline Steels API X80 pipeline steel is widely used in natural gas and oil transportation. In this study, X80 pipeline steels with 18.4 mm thickness and 1219 mm diameter, made in China, were welded by a
Nov 06, 2018 · EBSD Study on Transverse Tensile X80 Grade Pipeline Steel. IPC2010. Effect of Thermomechanical Processing Parameters Upon Texture Development and Anisotropy of Mechanical Properties of API-X80 Line Pipe Steels for Spiral-Welded Pipes. IPC2004. Development of X90 and X100 Steel Grades for Seamless Linepipe Products. Second West-East Gas Pipeline:Longest X80 pipeline in the May 25, 2009 · In a release, CNPC said the trunk line will use 2.8 mm tons of X80 grade steel pipe, consisting of 2 mm tons of spiral submerged arc welded pipe and 800,000 tons of longitudinal submerged arc welded pipe. The branch lines will use 1.6 mm tons of X70 grade steel pipe.
Quenching can improve the performance of X80 pipeline steel, but the temperature can not be too high. At the same time, the appropriate tempering treatment can make X80 pipeline steel obtain good hardness, strength, plasticity and toughness. 1. Introduction. Pipeline transportation is one of the most economical and reasonable way. s. to X80 steel pipes,X80 Line Pipe - Longtaidi(R) pipesX80 steel pipes,X80 Line Pipe large diameter X80 steel pipe:1. Factory sell 2. OD:273-1219mm 3. GB,ASTM,DIN,JIS,BS,API 4. Carbon steel pipe
Nov 30, 2018 · X80 Steel. X80is the number in the American Petroleum Institute's API Spec 5L Pipeline Specification. X represents the pipeline steel in the API Spec 5L standard, 80 is the strength grade, the unit is kpsi, and X80 is the pipeline steel with a minimum yield strength of 80 kpsi, which is converted to a metric unit of approximately 555 MPa.