Products

Difference between SDV and ESDV?

Admin2025-09-17T18:02:19+02:00SDV: Shut Down Valve, automatic process isolation.
ESDV: Emergency Shut Down Valve, for critical emergencies with stricter safety requirements.

Differences between Duplex and Super Duplex?

Admin2025-09-17T18:01:09+02:00Duplex: good mechanical strength and corrosion resistance.
Super Duplex: higher chromium, molybdenum, and nitrogen → higher PREN, excellent seawater resistance.

What are EN 10204 3.1 and 3.2 certificates?

Admin2025-09-17T18:00:21+02:003.1: certificate issued by the manufacturer with batch tests.
3.2: certificate validated by a third party or authorized inspector.

What is NACE MR0175/ISO 15156?

Admin2025-09-17T17:58:56+02:00It defines requirements for metallic materials used in H₂S environments, preventing embrittlement and corrosion.

Difference between API 600 and API 602 valves?

Admin2025-09-17T17:57:50+02:00API 600: large-size gate valves in cast steel.
API 602: small-size forged steel valves for high pressure.

What does PREN mean in stainless steels?

Admin2025-09-17T17:56:02+02:00PREN indicates the resistance of stainless steel to chloride corrosion. The higher the value, the greater the resistance.

Difference between 13CrMo and 16CrMo steels?

Admin2025-09-17T17:55:07+02:0016CrMo has more molybdenum, thus offering greater creep resistance compared to 13CrMo.

What is the difference between ASME B16.9 and B16.28 fittings?

Admin2025-09-17T17:53:09+02:00B16.9: butt-weld fittings.
B16.28: specific elbows and reducers not included in B16.9.

What does “creep” mean in materials?

Admin2025-09-17T17:52:08+02:00Creep is the slow deformation of a material under constant load at high temperature.