MSS SP 83 A350 LF2 Rohrverbindungen

MSS SP-83 A350 LF2 Pipe Unions are pipeline quick-connect couplings compliant with the MSS SP-83 standard, manufactured from ASTM A350 LF2 low-temperature carbon steel. Designed for low-temperature and high-pressure environments, they are ideal for demanding applications in oil, gas, and chemical industries.

High Quality MSS SP 83 A350 LF2 Pipe Unions

  • Pressure Rating: Class 3000 and 6000
  • Größenbereich: typischerweise NPS 1/8″ bis 4″
  • Types: socket weld and threaded unions.
Jetzt Anfrage senden

Hauptmerkmale

  • Cryogenic Toughness: ASTM A350 LF2 resists impact down to -46°C, preventing brittle failure.
  • High Pressure: Rated for Class 3000/6000 systems.
  • Quick Assembly: No welding tools needed.
  • Compatibility: Pairs with ASTM A350 LF2 flanges, valves, and fittings.

Material Properties (ASTM A350 LF2)

  • ASTM A350 LF2: A low-temperature carbon steel forging material with excellent toughness at cryogenic temperatures (service range: -46°C to +343°C), ideal for harsh environments (e.g., Arctic pipelines, LNG systems).
  • Contains nickel (Ni) and molybdenum (Mo) to enhance impact resistance and prevent brittle fracture.
  • Surface treatments (e.g., galvanizing) may be applied for corrosion protection.

Struktur & Typen

Dreiteiliges Design:

  • Besteht aus zwei Gewinde- oder Muffenschweißenden (männlich/weiblich) und einer zentralen Mutter zur schnellen Montage/Demontage.
  • Abdichtung: Metall-Metall-Kontakt (keine Dichtung), Präzisionsbearbeitung für lecksichere Leistung.

Verbindungstypen:

  • Gewindeverbindungen: Verwenden Sie NPT-Gewinde für Rohrverbindungen.
  • Muffenschweißverbindungen: An Rohre geschweißt für Anwendungen mit höherem Druck.

Druckwerte:

  • Klasse 3000 (~750 psi) und Klasse 6000 (~1500 psi). Druck-Temperatur-Werte sind in Standardtabellen definiert.

Typische Anwendungen

  • Cryogenic Services: LNG, liquid nitrogen (LN2), and low-temperature chemical transport.

  • High-Pressure Systems: Oil/gas wellheads, Arctic pipelines.

  • Frequent Maintenance: Instrumentation lines, compressor stations requiring regular access.

Jetzt Anfrage senden
ASTM A350 LF2 Flansch

One-Stop MSS SP 83 A350 LF2 Pipe Unions Provider for All Your Needs

SSM has significant product advantages in manufacturing MSS SP 83 A350 LF2 Pipe Unions. Whether it’s quality or price, we will meet your needs.

Jetzt Anfrage senden

More Information about MSS SP 83 A350 LF2 Pipe Unions

Schmiedeprozess: ASTM A350 LF2 requires strict forging for density and low-temperature properties.

Wärmebehandlung: Normalized or quenched + tempered for optimal strength.

Testen:

  • Charpy V-notch impact tests (validates toughness at low temps).
  • Chemical analysis (ensures Ni/Mo content).
  • Hydrostatic testing (per MSS SP-83).

Auswahlrichtlinien

Temperature Limits:

  • Use only within -46°C to +343°C. For higher temps, switch to A105 or alloy steels.

Medienkompatibilität:

  • Avoid strong acids (e.g., sulfuric/hydrochloric acid); use stainless steel (e.g., 316L) instead.

Installation:

  • Threaded joints require cryogenic-rated sealant (standard tape may fail in cold).
  • Socket welding must maintain a 1.6mm gap to prevent cracking.

Vergleich mit anderen Materialien

AspektA350 LF2A105 (Kohlenstoffstahl)
Temperaturbereich-46°C to +343°C-29°C to +425°C
Low-Temp. PerformanceExcellent (Ni/Mo alloyed)Poor (prone to brittleness)
Typical UsesLNG, Arctic pipelines, cryogenic chemicalsSteam systems, general oil/gas
KostenHigher (alloy content)Untere

Häufig gestellte Fragen

  • Threaded Unions:

    • Apply thread sealant (e.g., Teflon tape).

    • Tighten the central nut to compress the metal-to-metal seal.

  • Socket Weld Unions:

    • Weld pipes into the socket ends, ensuring a 1.6mm gap to prevent stress cracking.

  • Operating Range: -46°C (-50°F) to +343°C (+650°F)
  • Special Feature: Excellent impact resistance at sub-zero temperatures, making them ideal for LNG, liquid nitrogen, and Arctic pipeline systems.

MSS SP-83 A350 LF2 Pipe Unions are specialized for low-temperature, high-pressure piping systems, such as LNG and Arctic oil/gas applications. Their strengths are cryogenic toughness and high-pressure resistance, though they cost more and are unsuitable for corrosive media. Always verify temperature/pressure compatibility and ensure ASTM A350 LF2 material certifications.

📞 Technischer Support: Verfügbar für Beratung zur Materialauswahl und schnelle Angebote!

Jetzt Anfrage senden

Verwandte Produkte

DIN 2566 Flansch

DIN 2566 Flansch

DIN 2566 ist eine deutsche Norm für Gewindeflansche, die für Rohrverbindungen ohne Schweißen konzipiert sind. Gewindeflansche sind

Mehr lesen "
Cookie-Einstellungen aktualisieren
de_DEDE
de_DEDE en_USEN ru_RURU fa_IRFA id_IDID es_ESES fr_FRFR nl_NLNL
Nach oben scrollen