Schilthorn Precision Expertise & Capabilities in Tube Sheet Manufacturing
In shell-and-tube heat exchangers, the tube sheet is the structural core that secures and aligns hundreds of tubes with absolute accuracy. Each plate operates under high temperature, pressure, and corrosive service conditions where even a minor deviation can lead to leakage or failure.
At Schilthorn Precision Engineering Pvt. Ltd., precision is built into every stage of manufacturing. With over 18 years of machining experience, we produce ASME- and TEMA-compliant tube sheets that deliver consistent dimensional stability, corrosion resistance and long-term mechanical integrity across power, process and marine sectors. Every micrometre of accuracy directly translates into exchanger reliability
Why Tube Sheet Manufacturing Demands Accuracy
A tube sheet is a thick, perforated plate that anchors and isolates the tube bundle, maintaining a pressure-tight barrier between shell-side and tube-side fluids. Each drilled hole, groove and sealing surface must adhere to strict GD&T and surface-finish requirements to manage thermal expansion and pressure differentials. The life of a heat exchanger depends directly on how precisely this component is machined.
Schilthorn’s facility integrates all key operations under one roof, drilling, grooving, facing and milling performed on HAAS multi-axis VMCs for stable, repeatable accuracy. Every part undergoes CMM-verified inspection and surface-finish measurement to validate conformance with design drawings and tolerance charts. Through CAD/CAM-based programming, calibrated tooling and process traceability, each tube sheet achieves consistent geometry, perfect hole alignment and controlled surface integrity, batch after batch.
Key Technical Capabilities
| Parameter | Specification | Capability Advantage |
|---|---|---|
| Max Diameter | Up to 1000 mm | Suited for large shell-and-tube exchangers |
| Thickness Range | 24 – 50 mm | Delivers strength with machining stability |
| Hole Precision | ±100 µm | Maintains accurate tube alignment |
| Surface Finish | Up to 0.8 Ra(µm) | Enables leak-proof gasket seating |
| Grooves | Up to 9 | Supports reliable sealing performance |
| Machining Operations | Drilling / Grooving / Milling / Facing | Complete in-house control and repeatability |
Every machining cycle is monitored for tool wear, spindle temperature and dimensional drift, ensuring uniformity from first piece to final inspection.
Schilthorn’s Material Capabilities in Tube Sheet Manufacturing
Schilthorn machines tube sheets from a wide range of ferrous, non-ferrous and cladded materials, selected based on service environment, corrosion behaviour and thermal requirements. Each material undergoes certified traceability and controlled machining parameters to maintain dimensional stability and metallurgical integrity.
| Material Type | Grades / Composition | Applications |
| Carbon Steel & Boiler Quality Steel | SA 516 Gr. 60 / 70, IS 2062 | Standard process and power applications |
| Stainless Steel | SS 304, 304L, 316, 316L, 321 | General corrosion-resistant and food-grade service |
| Duplex & Super Duplex | UNS S31803, S32750 | Seawater and high-chloride conditions |
| Cu-Ni Alloys | 70/30, 90/10 | Marine and condenser service |
| Cladded Tube Sheets | Explosion-bonded / Weld overlay | Combines strength of base metal with corrosion-resistant layer |
| High-Nickel & Super Alloys | Inconel, Monel, Hastelloy | High-temperature and chemical-process equipment |
All materials are supplied with Mill Test Certificates (MTC) and verified through visual, dimensional and inspection prior to machining. Each conforms to relevant ASME and TEMA standards, ensuring reliability and consistency in every Schilthorn-manufactured tube sheet.
Industrial Sectors Trusting Schilthorn’s Engineered Tube Sheets
Schilthorn’s precision-machined tube sheets are integral to the performance and reliability of heat exchangers, condensers and process equipment across a variety of industries. Each design is engineered to meet application-specific demands for temperature, pressure and corrosion resistance such as:
- Power Generation: Steam condensers, feedwater heaters and reboilers operating under high-pressure, high-temperature cycles.
- Petrochemical & Refinery: Process condensers, gas coolers and hydrocarbon exchangers exposed to aggressive process media.
- Marine & Offshore: Seawater cooling and desalination systems requiring resistance to saline and chloride-rich environments.
- HVAC & Chillers: Condensers and evaporators designed for efficient thermal transfer and low maintenance.
- Pharmaceutical & Process Industries: Reactors and solvent-recovery units where cleanability and tube alignment are critical.
Each application benefits from accurate hole geometry, uniform surface finish and secure gasket retention, ensuring consistent performance throughout extended operational life.
Why Choose Schilthorn Precision for Your Tube Sheets Needs
With over 18 years of expertise in precision engineering, Schilthorn Precision Engineering Pvt. Ltd. manufactures ASME- and TEMA-compliant heat exchanger tube sheets designed to perform reliably under demanding operating conditions. Our integrated facility brings together explosion-bond and weld-overlay cladding, multi-axis CNC machining and CMM-verified dimensional inspection within a single controlled workflow achieving ±100 µm tolerances and 0.8 Ra surface finishes with repeatable accuracy. Certified to ISO 9001 and AS9100, every component undergoes stringent quality control, ensuring that each Schilthorn-manufactured tube sheet meets exacting international standards for performance, safety and durability.