ASME GAS GAS SA270 L7 Shell and TP304L Tube Heat Exchangers for Pipeline Project

YUHONG specialize in manufacturing high-quality ASME Gas / Gas SA270 L7 shell and TP304L tube heat exchangers. Our commitment to excellence ensures optimal performance and reliability for various applications.

• The equipment is designed and shall be constructed in strict accordance with the following major international standards:
• Pressure Vessel Code: ASME Boiler and Pressure Vessel Code, Section VIII, Division 1.
• Heat Exchanger Standard: TEMA (Tubular Exchanger Manufacturers Association) Class R (for severe service requirements).
• Industry Standard: API Standard 660 (Shell-and-Tube Heat Exchangers for General Refinery Services).
• Material/Metallurgy: Applicable NACE standards for service in potentially corrosive environments.

• Seismic Design: Designed for seismic loads as per IBC 2018.
• Wind Load Design: Designed for wind loads as per ASCE/SEI 7-22.

• Shell Side:
• Design Pressure (Internal): 56 barg
• Design Temperature: 85°C
• Hydrostatic Test Pressure: 72 barg
• Tube Side:
• Design Pressure (Internal): 58 barg
• Design Temperature: 145°C
• Hydrostatic Test Pressure: 75.4 barg
• Minimum Design Metal Temperature (MDMT): Both shell and tube sides have an MDMT of -41°C. This mandates the use of materials qualified for low-temperature service.

• Shell Side Fluid: Gas
• Tube Side Fluid: Compressed Gas
• Number of Passes:
• Shell Side: 1 Pass
• Tube Side: 2 Pass
• Fluid Density (Inlet / Outlet):
• Shell Side: 61.2 kg/m³ / 48.5 kg/m³
• Tube Side: 53.9 kg/m³ / 62.6 kg/m³

• Radiographic Examination: 100% Radiographic Testing (RT).
• Joint Efficiency: A joint efficiency factor of 1.0 is applied for both shell and head seams, permitted due to the full radiography.
• Post Weld Heat Treatment (PWHT)
• Impact Testing
• Corrosion Allowance:
• Shell Side: 3 mm
• Tube Side: 0 mm (indicating a corrosion-resistant material is specified for wetted parts).