 |
| Quantity: | |
|---|---|
Tube sheet
SDFL
Designed as a critical component in high-efficiency heat transfer systems, this custom large diameter SS tube sheet delivers precision-engineered performance across power generation, petrochemical, and HVAC industries. Fabricated from 316L stainless steel (1.4404)—a material enhanced with molybdenum for superior corrosion resistance—it supports 1,000+ heat exchanger tubes while withstanding extreme temperatures and aggressive media. Its customizable design ensures seamless integration with both ASME/ANSI and EN/DIN standard heat exchangers.
Parameter | Details |
Material | Stainless steel 316L (1.4404) |
Diameter Range | 500mm to 3,000mm |
Thickness Range | 20mm to 300mm |
Tube Hole Tolerance | ±0.05mm (ISO 2768-1 fine grade) |
Surface Finish | Ra ≤ 1.6μm (electropolished to Ra ≤ 0.8μm optional) |
Certifications | ASME BPVC Section VIII, ISO 9001:2015, PED 2014/68/EU |
Customizable Engineering: Tailored hole patterns (square, triangular, or rotated) optimize fluid flow dynamics, reducing pressure drop by up to 15% compared to standard designs .
Enhanced Corrosion Resistance: 316L’s 2-3% molybdenum content resists chloride pitting corrosion in seawater (35,000 ppm chloride) and sulfuric acid environments (pH 1–3).
Precision Machining: Laser-drilled tube holes with ±0.05mm tolerance ensure leak-free tube-to-sheet welds, validated through helium leak testing (1x10⁻⁹ Pa·m³/s).
Heavy-Duty Construction: Thickness up to 300mm provides structural stability for 15+ years of service life in high-pressure (100+ bar) heat exchanger operations.
Power Plants: Used in condenser tube sheets for thermal power stations, handling 150+ bar steam pressure while resisting corrosion from turbine condensate.
Oil & Gas: Isolates heat exchanger tubes in offshore platforms, withstanding H₂S (sour service) and brine exposure in crude oil processing.
Chemical Processing: Manages aggressive fluids like hydrochloric acid (pH 1–2) and caustic soda, with optional PTFE lining for extreme chemical resistance.
Q: What material alternatives are available beyond 316L?
A: 2205 duplex stainless steel (1.4462) offers higher strength for chloride environments, while Inconel 625 provides superior high-temperature resistance up to 1,000°C.
Q: How is flatness ensured for large-diameter tube sheets?
A: Precision milling achieves ±0.1mm/m flatness, followed by stress-relief annealing at 850°C to eliminate residual stresses from machining.
Q: What non-destructive testing is performed?
A: Includes ultrasonic thickness measurement (UTM), dye penetrant inspection (DPI) for surface defects, and radiographic testing (RT) for critical applications.
Designed as a critical component in high-efficiency heat transfer systems, this custom large diameter SS tube sheet delivers precision-engineered performance across power generation, petrochemical, and HVAC industries. Fabricated from 316L stainless steel (1.4404)—a material enhanced with molybdenum for superior corrosion resistance—it supports 1,000+ heat exchanger tubes while withstanding extreme temperatures and aggressive media. Its customizable design ensures seamless integration with both ASME/ANSI and EN/DIN standard heat exchangers.
Parameter | Details |
Material | Stainless steel 316L (1.4404) |
Diameter Range | 500mm to 3,000mm |
Thickness Range | 20mm to 300mm |
Tube Hole Tolerance | ±0.05mm (ISO 2768-1 fine grade) |
Surface Finish | Ra ≤ 1.6μm (electropolished to Ra ≤ 0.8μm optional) |
Certifications | ASME BPVC Section VIII, ISO 9001:2015, PED 2014/68/EU |
Customizable Engineering: Tailored hole patterns (square, triangular, or rotated) optimize fluid flow dynamics, reducing pressure drop by up to 15% compared to standard designs .
Enhanced Corrosion Resistance: 316L’s 2-3% molybdenum content resists chloride pitting corrosion in seawater (35,000 ppm chloride) and sulfuric acid environments (pH 1–3).
Precision Machining: Laser-drilled tube holes with ±0.05mm tolerance ensure leak-free tube-to-sheet welds, validated through helium leak testing (1x10⁻⁹ Pa·m³/s).
Heavy-Duty Construction: Thickness up to 300mm provides structural stability for 15+ years of service life in high-pressure (100+ bar) heat exchanger operations.
Power Plants: Used in condenser tube sheets for thermal power stations, handling 150+ bar steam pressure while resisting corrosion from turbine condensate.
Oil & Gas: Isolates heat exchanger tubes in offshore platforms, withstanding H₂S (sour service) and brine exposure in crude oil processing.
Chemical Processing: Manages aggressive fluids like hydrochloric acid (pH 1–2) and caustic soda, with optional PTFE lining for extreme chemical resistance.
Q: What material alternatives are available beyond 316L?
A: 2205 duplex stainless steel (1.4462) offers higher strength for chloride environments, while Inconel 625 provides superior high-temperature resistance up to 1,000°C.
Q: How is flatness ensured for large-diameter tube sheets?
A: Precision milling achieves ±0.1mm/m flatness, followed by stress-relief annealing at 850°C to eliminate residual stresses from machining.
Q: What non-destructive testing is performed?
A: Includes ultrasonic thickness measurement (UTM), dye penetrant inspection (DPI) for surface defects, and radiographic testing (RT) for critical applications.
