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Spectacle Blinds and other Line Blinds
Additional requirements for welding procedure qualification (WPQR) in accordance with EN 13445-4 clause 8.3
Flange gaskets characteristics
Flange calculations methods
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Orifice plate and orifice flanges
Hydrogen gasket compatibility for hydrogen applications
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Standard PN-Flange connection with external loads
ASME BPVC Sect. VIII: Welded Joint Locations Categories

Category: Material

Pipes and line pipes
Pipes for pipelines: Comparison of ISO 3138 with API Spec 5L pipes

API Spec 5L specifies requirements since 1928 for manufacture of Line Pipe. The scope of the current issue is defined as: “Requirements for the (more…)

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Austenitic stainless steels: What is the difference between “L” grade and “H” grade?

The common austenitic grades of stainless steel, such as 304 and 316, are also available “standard” and with controlled low carbon “L” or high (more…)

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ISO 15614-1: Which range of material groups according to ISO 15608 are qualified?
A welding procedure qualification record (WPQR) in acc. to ISO 15614-1 qualifies a welding procedure for steels and specifies conditions for the range of qualification. …
Standard bodies
What are designations for materials such as EN-Material No., Grade, AISI, or UNS?

The EN material number according to EN 10027-2 is a unique number and is primarily based on the chemical composition and is primarily used (more…)

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Welding
For which materials is Standard Welding Procedure Specification (SWPS) EN ISO 15612 for pressure vessels possible?

EN ISO 15612 specifies how a standard welding procedure specification (SWPS) can be qualified by developing it on the basis of one or more (more…)

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welding column
For which materials is welding procedure qualification (WPQR) according to EN ISO 15610 possible?

EN ISO 15610 specifies how a welding procedure (WPQR) can be qualified by using tested welding consumables. But this application of EN ISO 15610 (more…)

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U-stamp and CE Marking
Are the EN ISO 15608 Material groups comparable with the P-no groups ASME BPVC Section IX?
The ISO/TR 15608 Material groups are similar but not 1:1 comparable with the P-no groups acc. to ASME BPVC Section IX. The main difference between the two is that the ISO system allows any material within the scope of the …
Cryogenic
EN 13445: Cryogenic and low-temperature steels

Brittle fracture resistant steels at low and very low-temperatures (cryogenic temperatures) applications are increasingly becoming the focus of energy supply due to the increasing transportation of liquid gases. … more

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EN 13445 series Pressure vessels
EN 13445: Requirements of material used for non-pressure parts

For non-pressure parts, e.g. for supporting lugs, skirts, saddles, baffles, brackets, and similar parts welded to pressure vessels, material shall be used which are supplied to material specifications covering at … more

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