ASME SA240 SS304 Heat Exchanger Tube Sheet Precision CNC-Drilled for Corrosion Resistant Petrochemical Service

The tubesheet is a perforated circular plate that secures and aligns the tube bundle while maintaining a pressure-tight barrier between shell-side and tube-side fluids. It is the primary pressure-containing component of a shell-and-tube heat exchanger.

This tubesheet is manufactured from ASME SA240 Type 304 stainless steel (UNS S30400) - the industry-standard austenitic grade offering a balance of corrosion resistance, formability, and weldability. The material provides reliable performance in service temperatures up to 465°C (870°F) in oxidizing environments.

Manufacturing: Precision CNC-drilled and machined per client-supplied TEMA layout drawings (triangular or square pitch), with pass partition grooves and sealing faces machined to specification.

All tubesheets are produced in strict compliance with ASME SA240 / ASTM A240 - no alternative standards are applied.

All tubesheets undergo comprehensive non-destructive examination (NDE) with full material traceability maintained via Mill Test Reports (MTRs).

PT and UT are performed at 100% inspection rate on critical surfaces.

ASME SA240 SS304 tubesheets are specified for heat exchanger services where tube-side or shell-side fluids are mildly corrosive and chloride concentrations remain low.

• Petrochemical & Refining - Heat transfer in refining and chemical processes
• Pharmaceutical - Sanitary heat exchangers for controlled processing
• Food & Beverage - Process heating/cooling where hygiene and cleanability are required
• Power Generation - Low-pressure feedwater heaters, lube oil coolers
• HVAC & Refrigeration - Chiller barrels, condensers, evaporator bundles
• General Industry - Water coolers, hydraulic oil coolers, non-aggressive fluid handling

Design pressure limit: ≤ 30 bar (~435 psi) for rolled plate construction.

• Corrosion resistance: Chromium content of 18.0-20.0% and nickel content of 8.0-10.5% provide resistance to oxidation and corrosion from atmospheric exposure, freshwater, steam, and mild chemical solutions.
• Precision fit: CNC-drilled tube holes to +0.05 / -0.00 mm tolerance prevent bypass leakage and ensure consistent tube rolling.
• Joint integrity: 2 or 3 precision annular grooves per hole maximize mechanical pull-out strength during hydraulic tube expansion.
• Traceability: Full material certification with MTRs verifying ASME SA240 compliance for chemistry and mechanical properties.

• Custom OD and thickness per drawing
• Tube hole patterns: triangular or square pitch per TEMA layout
• Custom groove configurations
• Floating or stationary tubesheet designs
• Rolled plate (SA240) or forged construction options