Tie rods are structural tension members that secure tube bundle assemblies within high-pressure heat exchangers against operational forces.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Proof Load | ≥640 MPa | |
| Diameter Range | M16 to M64 (16mm to 64mm) | |
| Surface Finish | Ra ≤ 3.2 μm | |
| Pressure Rating | Suitable for 15-30 MPa service | |
| Length Tolerance | ±1.5mm per meter | |
| Tensile Strength | ≥800 MPa | |
| Temperature Range | -50°C to +400°C | |
| Thread Specification | ISO 898-1 Class 8.8 or higher |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
This tube bundle is a critical component of shell-and-tube heat exchangers used in high-pressure ammonia synthesis loops within fertilizer production facilities.
The structural foundation of a precision stamping module that provides rigidity, stability, and alignment for stamping operations.
A mechanical system that controls the direction of movement for soil compactors by transmitting operator input to the wheels or tracks.
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Manufacturer profiles associated with Tie Rods.
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Tie rods prevent tube sheet distortion caused by thermal expansion differentials between tubes and shell, which could lead to tube joint failures and ammonia leaks in high-pressure (15-30 MPa) service.
Initial retensioning after first 500 operating hours, then annually during maintenance shutdowns, or when pressure drop across the exchanger increases by 15% indicating possible bundle movement.
Yes, but all tie rods in a bundle should be tensioned simultaneously using hydraulic tensioners to ensure uniform load distribution and prevent uneven stresses on tube sheets.
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