Throughout many parts of the world, cast iron pipe has been and continues to be used for utility piping (water sewage) gaseous media piping. Gray is known have a limited life in service but often left place beyond its reasonable life. Therefore, end then defined as rupture or crack subsequent leak, at an unpleasant time with results. The controlling mechanism involved dependent graphitic corros...

Pipe cleaning is currently the most effective method to improve cleanliness and corrosion resistance of pipes. In this paper, a new pipe proposed, combining mechanical chemical cleaning, offline tank online cycle cleaning. Through experiments characterization morphology changes, mechanism pickling passivation Q235 steel was explored, entire process microstructure changes on wall’s surface analy...

Since many household systems are fabricated out of metallic materials, changes to the household environment that accelerate corrosion rates will increase the frequency of failures in these systems. Recently, it has been reported that homes constructed with imported wallboard have increased failure rates in appliances, air conditioner heat exchanger coils, and visible corrosion on electrical wir...

In the high sulfur natural gas purification unit, connecting pipe of a lean/rich amine heat exchanger is extremely susceptible to corrosion due acid and liquid condition. This work numerically investigated gas–liquid flow real-scale pipeline with two horizontal sections, one vertical section four elbow sections. The effect holdup on pattern, distribution velocity pressure, rate was using an exp...

Coatings control corrosion by providing a barrier against oxygen and water. Although coatings are extremely effective, all organic coatings are semi-permeable to O2 and water. The water permeability coefficient of fusion bonded epoxies, one of the best coating systems, is approximately 10 gms/mil/24 hours, but minimum concentration of oxygen and water that can start the corrosion process is 10 ...

Due to their exceptional structural integrity, steel pipelines are the main component for oil and gas transmission. However, these often affected by corrosion, despite corrosion protection, because of harsh working conditions. In addition defects, subjected multiple external loads. The combination defects loads can significantly reduce failure pressure, resulting in various behaviors. This redu...