MSS SP-97 A350 LF2 Outlet Fittings

MSS SP-97 A350 LF2 Outlet Fittings are critical components for low-temperature, high-pressure systems, especially in LNG and Arctic oil/gas projects. 

High Quality MSS SP-97 A350 LF2 Outlet Fittings

  • Connection Types: Socket weld, buttweld, threaded.
  • Pressure Ratings: Class 3000, 6000, 9000 (~750 psi, 1500 psi, 2250 psi).
  • Reinforced Design: Forged construction provides extra thickness at the branch-to-header junction, eliminating the need for reinforcement pads
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SSM SP-97 Outlets Fittings Size Types & Class

Correlation of Fittings Class with Schedule Number or Run/Branch Wall Designation of Pipe for Calculation of Ratings

Class of FittingTypeBranch SizeRun Pipe Wall
for Ratings Basis		Branch Pipe Wall
for Ratings Basis
NPSDN
StandardButtwelding1/8-246-600StandardStandard
Extra StrongButtwelding1/8-246-600Extra StrongExtra Strong
Schedule 160Buttwelding1/2-615-150Schedule 160Schedule 160
Double Extra StrongButtwelding1/2-615-150Double Extra StrongDouble Extra Strong
3000 Threaded1/8-46-2000Extra StrongExtra Strong
6000 Threaded1/8-2 6-50Schedule 160Schedule 160
9000 Threaded1/8-2 6-50Double Extra StrongDouble Extra Strong
3000 Socket Welded1/8-4  6-2000Extra StrongExtra Strong
6000 Socket Welded1/8-2 6-50Schedule 160Schedule 160
9000 Socket Welded1/2-2  15-50Double Extra StrongDouble Extra Strong

A350 LF2 Material Properties

A low-temperature carbon steel forging material per ASTM standards

Key Properties:

  • Low-Temperature Toughness: Suitable for environments as low as -46°C (Arctic, LNG applications)
  • Chemical Composition: Contains nickel (Ni 0.4% max) and molybdenum (Mo 0.12% max) for enhanced impact resistance
  • Mechanical Properties: Tensile strength ≥485 MPa, yield strength ≥250 MPa

Typical Applications

  • Liquefied Natural Gas (LNG): Receiving terminal piping, cryogenic pump inlets/outlets
  • Arctic Oil & Gas Fields: Wellhead equipment and gathering pipelines in low-temperature environments
  • Chemical Industry: Branch connections for ethylene, liquid ammonia, and other cryogenic media

Advantages:

  • Eliminates weld reinforcement risks in low-temperature brittle fracture scenarios
  • Reduces installation time (30% faster than traditional reinforcement methods)
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MSS SP-97

One-Stop MSS SP-97 A350 LF2 Outlet Fittings Provider for All Your Needs

SSM has significant product advantages in manufacturing MSS SP-97 A350 LF2 Outlet Fittings. Whether it’s quality or price, we will meet your needs.

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More Information about MSS SP-97 A350 LF2 Outlet Fittings

Key Technical Selection Criteria

Material Compatibility

  • Header material must be A350 LF2 or compatible (e.g., A333 Gr.6)
  • Prohibited: Mixing with standard carbon steel (e.g., A105) in cryogenic systems

Welding Requirements

  • Filler Material: AWS E7018-G (certified for -46°C)
  • Preheating: ≥10°C (required if ambient temperature <0°C)
  • Interpass Temperature: ≤250°C

Corrosion Protection

  • Marine Environments: Require epoxy coating or galvanization
  • H₂S Service: Must comply with NACE MR0175

Comparison with Other Standards

ParameterA350 LF2A105A182 F304
Min. Temp.-46°C-29°C-196°C
Sulfide ResistanceModerate (requires NACE certification)PoorExcellent (requires 304L for low carbon)
Cost20-30% higher than A105Baseline3-5× higher than LF2

 

FAQ

  • No! LF2 is only rated for -46°C and above. Use austenitic stainless steel (e.g., A182 F316L) for lower temperatures.

  • SP-97 are forged with integral reinforcement, while SP-75 are cast or non-reinforced with lower pressure ratings.

  • Generally no, but localized annealing is recommended if weld heat input exceeds 250°C.

MSS SP-97 A350 LF2 Outlet Fittings are critical components for low-temperature, high-pressure systems, especially in LNG and Arctic oil/gas projects. Their core value lies in the combination of material toughness and structural reliability. Selection must rigorously evaluate operating temperatures, media corrosivity, and welding procedures—consult specialized engineers for design collaboration.

For dimension tables or technical drawings, contact suppliers for detailed documentation!

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