Metal Support Grid Product Description
The Metal Support Grid is a load‑bearing column internal placed at the bottom of a packed bed or catalyst bed. It supports the weight of the packing and liquid holdup while permitting free passage of gas and liquid through its open structure. Typically fabricated from stainless steel or carbon steel bars, plates, or perforated panels, the grid is custom‑engineered to match the column diameter and design load. Its high open area minimizes pressure drop, and its robust construction ensures long‑term reliability under heavy static and dynamic loads. The support grid is used in distillation towers, absorption columns, strippers, and reactors across the petrochemical, refining, and chemical industries.
Product Highlights
Designed to support the full weight of the packed bed plus liquid holdup, with safety factors incorporated for long‑term operation.
Optimized bar spacing or perforation pattern provides free passage for gas and liquid, minimizing pressure drop and preventing flooding.
Available in 304, 316L stainless steel, and other alloys, withstanding temperatures up to 450°C and aggressive chemical environments.
Bar spacing, grid thickness, support beams, and segment sizes are fully tailored to column diameter and process requirements.
Modular segments are designed for easy handling and installation through manways, reducing turnaround time.
Widely used in packed towers and reactors, with decades of successful service in demanding industrial applications.
Technical Specifications
| Parameter |
Standard Duty |
Heavy Duty |
Ultra Heavy Duty |
| Bar Spacing (mm) |
25 / 38 / 50 |
25 / 38 / 50 |
38 / 50 / 76 |
| Open Area (%) |
50–70 |
45–65 |
40–60 |
| Bar Thickness (mm) |
6 / 8 / 10 |
8 / 10 / 12 |
10 / 12 / 16 |
| Support Beam Height (mm) |
50–100 |
100–150 |
150–250 |
| Max Span (mm) |
600–1200 |
800–1600 |
1000–2000 |
| Material Thickness (deck) |
4–6 mm |
6–8 mm |
8–12 mm |
| Max Operating Temp (°C) |
≤450 |
≤450 |
≤450 |
Frequently Asked Questions
What is the primary function of a Metal Support Grid?
A Metal Support Grid acts as a structural internal installed at the base of packed or catalyst beds to bear the entire load of the packing materials and liquid holdup while ensuring unrestricted gas and liquid passage with minimal pressure drop.
What materials are typically used for manufacturing?
They are predominantly manufactured from 304 and 316L stainless steel, carbon steel, and other process-specific high-grade alloys capable of resisting aggressive chemical corrosion and high temperatures up to 450°C.
How does the support grid prevent column flooding?
By engineering an optimal open area—ranging between 40% and 70% depending on duty configuration—the grid ensures high fluid pass-through capability, preventing vapor choking and liquid accumulation at the bed boundary.
Can the grid be installed through narrow manways?
Yes, the grids are manufactured in custom sectional or modular designs engineered to pass easily through standard column manways, facilitating rapid installation and field assembly.
Can dimensions and bar spacing be customized?
Yes, the bar spacing, grid deck thickness, support beam profile, and section layout can be fully engineered according to the vessel diameter, packing type, and mechanical design load.
