Oil, gas and petrochemical

Weld qualification, corrosion assessment and duplex phase balance. Much of the region’s metallographic work, and most of it is bound by a code.

What this work prepares

Weld qualification

Macro and micro examination of procedure-qualification and production welds: fusion boundary, heat-affected zone, root and cap. Usually a macro-etched section photographed to a code requirement.

Duplex and super-duplex phase balance

Ferrite/austenite ratio by point count or image analysis. The measurement is destroyed by a preparation that relieves one phase against the other, which is the single most common reason a duplex result is disputed.

Corrosion and failure assessment

Pitting, stress-corrosion cracking, hydrogen damage and sulphide stress cracking in sour service. Edge retention matters because the damage is at the surface.

Coating and cladding integrity

Weld overlay and cladding thickness, dilution and bond line. Two materials of different hardness meeting at a line.

Sources

• What each material class needs, and the figures behind it: the linked preparation guide, which cites the manufacturer document and page for every figure it prints.
• What P2 supplies and does not: Independent sourcing.
• The description of this sector’s metallographic work is general engineering knowledge and is P2’s own; it is not a manufacturer statement and it makes no claim about any particular customer.

Preparing stainless and duplex steels for metallography — the manufacturer’s published preparation route for the material this sector works with most, with the document and page behind every figure in it.

Holding a part number from another manufacturer? Send it and we will match it.