Custom-engineered U-Tube replacement bundles designed to eliminate thermal expansion stresses. Featuring a fully removable tube bundle , these systems allow easy external mechanical cleaning and bundles extraction while delivering high heat transfer coefficients under high-pressure process loads.
| Specification Parameter | Value / Standard Configuration |
|---|---|
| Product Type | U-Tube (U-Type) Replacement Tube Bundle [1] |
| Thermal Expansion | Self-Compensating Floating U-Bends |
| Tube Metallurgy | Stainless Steel (SS316L/SS304), Copper, Cupro-Nickel, Titanium |
| Tubesheet Materials | Carbon Steel (ASME SA516 Gr 70), SS, Brass/Bronze Clad |
| Maximum Tube Length | Up to 6000 mm (Custom fabricated to customer drawings) |
| Maximum Tube Count | Up to 1200 Tubes per bundle (Custom layouts available) |
| Water/Fluid Testing | Hydrostatic Pressure up to 45 Bar, Helium Leak, Eddy Current |
| Baffle Metallurgy | Carbon Steel, Stainless Steel, Brass/Bronze |
| Manufacturing Basis | Reverse-Engineered from Old Bundles or Custom Blueprints [1] |
Self-Compensating Thermal Expansion: Because the tube bundle is bent in a continuous U-shape, both tube ends are secured to a single tubesheet while the floating U-bend is allowed to move freely inside the shell outer casing. This structural freedom completely eliminates stress differences caused by thermal expansion, protecting critical tube-to-tubesheet joint seals from mechanical fatigue and pressure-cycle leakage.
Fully Removable Tube Bundle: Our U-Tube replacement bundles are designed with a completely withdrawable tube bundle. This configuration allows the entire bundle to be extracted from the shell, enabling rapid, simple external mechanical cleaning and hydrostatic inspections of the tube-sides, minimizing scheduled shut-down periods.
High-Pressure Process Suitability: By utilizing a single tubesheet layout instead of a fixed, dual-tubesheet alternative, our systems are highly optimized for extreme high-pressure fluid transfers where a floating tubesheet would fail. M.D Heat Exchanger integrates computerized HTRI thermal modelling to calculate precise baffle pitch and fluid velocities, ensuring maximum operational lifetime.
Every replacement bundle is modeled with specific thermodynamic profiles. Below are the key engineering specifications built into our U-Type designs:
The tube U-bend sits completely unattached inside the shell, protecting the entire assembly from continuous heating and cooling stresses.
By using a single tubesheet instead of two, we reduce gasket interfaces by half, decreasing potential leak points.
Every tube-to-tubesheet joint is fabricated under certified NDT inspection codes, guaranteeing uncompromised structural sealing.
