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Latest Articles

Orifice plate and orifice flanges
Hydrogen gasket compatibility for hydrogen applications
  • PREMIUM
Flange calculations methods
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Standard PN-Flange connection with external loads
ASME BPVC Sect. VIII: Welded Joint Locations Categories
Gasket selection for industrial piping EN 13480-3
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MAWP calculation procedure for pressure vessels
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ASME BPVC Sect. VIII Div. 1 – minimum, calculated and maximum test pressure

Category: Pressure Equipments - FAQs

PED Pressure Equipment Directive
What means the “maximum allowable pressure PS”?

The Term “PS = maximum allowable pressure” is specified in PED. “PS” is the pressure at a specific point on the pressure equipment for (more…)

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Duplex stainless steels
Suitable Standard-Duplex and Super-Duplex steels for Pressure Equipments

This article provides an overview of duplex material specifications for pressure equipment applications. Compared with some other materials, Standard Duplex Steels and Super Duplex (more…)

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plant
Stainless steel materials with high resistance to chloride-induced stress corrosion cracking (SCC)

Stress corrosion cracking (SCC) is characterized by cracks propagating either transgranularly or intergranularly (along grain boundaries). Chlorides are widely present in many industrial and (more…)

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EN 13445 and ASME BPVC Section VIII
Duplex stainless steels – Classification in four groups

The PREN (Pitting Resistance Equivalent Number) for duplex steels is an important parameter for classifying duplex steels also from the point of view of (more…)

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PED
Is Design Approval by a notified body required under Modul G?

Module G does require that a notified body must examine the design of the pressure equipment and it is considered reasonable to expect the (more…)

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PED
Which documents have to be available for the final inspection of a Pressure Equipment?

Pressure equipment shall undergo a final inspection to assess visually and by examination of the accompanying documents compliance with the requirements of this Directive. (more…)

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weldolet
Weldolet – Integral reinforced forged branch outlets

Weldolet fittings – the Branch Connection Fittings are also named as Outlet fittings. Outlets are a family of forged products used to make 90 degree or 45 (more…)

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Valve-02
What means ISO 5208 leakage rate A?

The ISO 5208 rate A specify a leakage by internal tightness seat test (or often also called closure test) of valves. Usually one side (more…)

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hydrogen
High temperature hydrogen attack (HTHA) of steels

Carbon steel process plant that operates with hydrogen at elevated pressure and temperature can be weakened by a phenomenon known as high temperature hydrogen attack (more…)

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