Steel Pipe ASTM A53 B vs ASTM A106 B

ASTM A53 and 106 is vastly applied in general industrials, sometime it can be switched to each other as an alternative. This article will highlight some key different that will help you to identify the risks in material selection between A53 and A106 The scope of ASTM A106 and A53 ASTM A53 specification covers the steel pipe manufacturing types in seamless and welded, material in carbon steel, black steel. Surface natural, black, and hot-dipped galvanized, zinc coated steel pipe. Diameters range from NPS 1⁄8 to NPS 26 (10.3mm to 660mm), nominal wall thickness. ASTM A106 standard specification covers the seamless carbon steel … Continue reading Steel Pipe ASTM A53 B vs ASTM A106 B

What is Concrete coating pipe (CWC Pipe)

The concrete coated pipe also called concrete weight coating pipe (CWC pipe), it is the steel pipe external with concrete weight coating (Mixed with cement, aggregates, reinforced steel mesh, and water), to provide strong downward force protection (Impact from anchoring, dredging activity, fishing, ship sinking) or a negative buoyancy for the pipelines. This pipe is commonly used in sub-sea (submarine) pipelines, with adding the proper weight of the concrete coatings to support a resistant pressure against seawater. Concrete coated pipe types and dimensions For to use in different circumstances in the sub-sea environment, the pipe could be in different dimensions, … Continue reading What is Concrete coating pipe (CWC Pipe)

What is Pitting Mechanism and Prevention

As discussed in earlier post <<What is PREN value for pitting corrosion?>>, pitting corrosion is one of the most common localized corrosion attack and most destructive form of corrosion in metal and alloy. In article will explain generally about the mechanism and prevention of pitting corrosion: Pitting Corrosion on Metal SurfacePitting is one of the most destructive forms of corrosion as it will potential cause equipment failures due to perforation / penetration. pitting generally occurs on metal surfaces protected by oxide film such as Stainless steel, aluminum, etc. Typically for boiler and feed water system, pitting corrosion rate increase dramatically with the … Continue reading What is Pitting Mechanism and Prevention

What is PREN value for pitting corrosion?

Despite its inherent resistance to corrosion, stainless steel tubing installed in a marine environment suffers from different types of corrosion throughout its expected lifetime. Such corrosion can lead to fugitive emissions, lost product, and potential risks. Offshore platform owners and operators can reduce corrosion risks at the outset by specifying more robust tubing materials that offer better corrosion resistance. Later, they must remain vigilant in their inspections of chemical injection, hydraulic, and impulse lines, as well as process instrumentation and sensing equipment, to ensure corrosion isn’t threatening the integrity of the installed tubing and impacting safety. Localized corrosion can be … Continue reading What is PREN value for pitting corrosion?

What is Static equipment in Oil & Gas?

The majority of mechanical equipment found in oil and gas facilities belongs to the static equipment group, which comprises pressure vessels (drums, columns, reactors, filters) and heat exchangers (shell and tubes, plate and frame, air coolers). This article will contain cost-effective recommendations for design, materials, and fabrication. They aim to enable the inspector/surveyors/engineer/purchaser who is not an equipment specialist, to check that economical choices are made. The specification and selection of the equipment is the responsibility of the static equipment engineer, based on requirements specified by other disciplines, including process, materials and plant layout. Let’s start with the review of … Continue reading What is Static equipment in Oil & Gas?

What is water standards for hydrostatic testing?

Selection and Treatment of Water and Conduct of the Test, to Maintain the integrity of the System is a priority concern in new-building or construction project. Specially on Stainless-steel which is very sensitive to corrosion. 1.0 Introduction Welded fabrications are frequently tested hydrotested for pressure tightness. Unless properly conducted, this procedure can induce problems. It is important to avoid initiating corrosion of the fabrication by subjecting it to critical conditions outside the initial design constraints. Where the vessel is to handle materials which are later ingested, contamination must be avoided. Damage may be caused by the induction of latent corrosion … Continue reading What is water standards for hydrostatic testing?