We supply steel base plates for heavy-duty structural projects with plate thicknesses ranging from 10mm to 100mm, available in three structural configurations: flat type, drilled type, and stiffened type. Each base plate is fabricated per the project-specified design code, with emphasis on meeting ACI 318-19 concrete bearing strength and load transfer requirements between the column and the foundation. As the key load-transfer component between steel columns and concrete foundations, base plates disperse axial compression, shear, and bending moment loads into the foundation.
Technical Parameters of Steel Base Plates
| Parameter | Value |
|---|---|
| Product Name | Steel Base Plates for Heavy-Duty Projects |
| Plate Thickness | 10mm – 100mm |
| Material | Carbon steel per project specification (typical: A36 / Q235B for standard, Q355 for higher load) |
| Design Standard | ACI 318-19 (concrete bearing); project-specified codes for structural design |
| Bolt Hole Pattern | 4-hole / 6-hole / 8-hole, M16 – M72 |
| Hole Type | Standard / Oversized / Slotted |
| Surface Treatment | Abrasive blasted surface with multi-layer corrosion protection system (primer + mid-coat + topcoat); hot-dip galvanizing per ASTM A123 available |
| Welding Process | GMAW / FCAW / SAW |
| Dimensional Tolerance | Per ISO 2768 |
| Service Type | OEM/ODM Custom Fabrication |
| Certification | AWS CWI welder qualification; third-party inspection by BV/SGS supported |
| Lead Time | 15 – 30 days (depending on quantity and complexity) |
| Packaging | Steel crate or pallet, export-grade seaworthy packing |
Types of Steel Base Plates
We produce three base plate configurations. Types are classified by structural feature: no holes = flat; with holes, no stiffeners = drilled; with stiffener ribs = stiffened.
Type 1: Flat Plate
| Thickness | 10 – 25mm |
| Structure | Flat rectangular or square plate, no holes, no stiffeners |
| Application | Light to medium columns, equipment bases, solar PV brackets, sign poles |
| Advantages | Simple processing, low cost, fast fabrication |
Type 2: Drilled Plate
| Thickness | 10 – 40mm |
| Structure | Plate with pre-drilled anchor bolt holes (4 / 6 / 8 holes), no stiffeners |
| Hole Diameter | Standard: bolt dia + 5mm; Oversized: bolt dia + 8mm; Slotted: custom |
| Application | Standard steel columns in workshops, industrial platforms, equipment foundations |
| Advantages | Accurate positioning, compatible with standard anchor bolts, fast field installation |
Type 3: Stiffened Plate
| Thickness | 25 – 60mm |
| Structure | Base plate with vertical stiffener ribs welded between column and plate |
| Stiffeners | Typically 12–20mm thick, 4–8 pieces depending on column section |
| Application | Medium to high moment loads, lateral-force-resisting columns, wind/seismic zones |
| Advantages | Reduces required plate thickness, resists rotational forces, improves load distribution |
| Welding | Fillet weld or PJP groove weld per AWS D1.1 |
For heavy-duty plate products with thicknesses 40–100mm+ and complex stiffening, see Heavy-Duty Base Plate for Structural Columns
Selection Guide
| Load Range | Column Type | Project Type | Recommended Type | Thickness |
|---|---|---|---|---|
| < 500 kN | H-section / tube | Solar, light equipment | Flat Plate | 10 – 16mm |
| 500 – 1,500 kN | H-section / box | Industrial building | Drilled Plate | 16 – 25mm |
| 1,500 – 3,000 kN | Box / built-up | Mid-rise, industrial platform | Stiffened Plate | 25 – 40mm |
| > 3,000 kN / high moment | Built-up / box | High-load, seismic | → Heavy-Duty Plate | 40 – 100mm+ |
| High-strength material required | Any | Any | → High Strength Plate | Custom |
Applications of Steel Base Plates
Our base plates have been supplied to structural projects worldwide. Typical applications include:
Industrial Buildings: Column base connections for steel-framed workshops and warehouses.
Multi-Story Commercial Structures: Main column bases transferring axial and lateral loads to pile caps.
Transportation Support Structures: Base plates for steel columns connecting to concrete foundations in transportation infrastructure.
Equipment Foundations: Base plates for heavy machinery, tanks, and process equipment.
Solar PV Structures: Base plates for solar mounting systems on ground-mounted arrays.
Manufacturing Process of Steel Base Plates
All base plates are manufactured in our steel structure fabrication facility. Production follows a three-stage workflow - plate forming, welding & assembly, and surface protection & dispatch - with quality checks embedded at each stage.
| Step | Process | Equipment | Quality Check |
|---|---|---|---|
| 1. Plate Forming | Cut plate to B×N dimensions per drawings and drill anchor bolt holes | CNC plasma / flame / laser cutting; CNC gantry drilling | Length, width, hole position per drawing |
| 2. Welding & Assembly | Weld stiffener ribs to plate and column to plate per WPS; UT or MT inspection on welds | GMAW / FCAW; UT/MT flaw detector | Visual per AWS D1.1 + NDT acceptance |
| 3. Surface Protection & Dispatch | Abrasive blasting and multi-layer coating or galvanizing; final dimensional check; seaworthy packing | Blasting chamber, spray booth; CMM | Coating thickness verified; final inspection report + MTC |
Welding Qualification
| Item | Detail |
|---|---|
| Certification | AWS CWI (Certified Welding Inspector) |
| WPS & PQR | Per AWS D1.1, available for all standard joint configurations |
| Third-party inspection | BV, SGS supported |
Our Steel Base Plates Export Cases
| Project | Country | Application | Plate Spec | Material | Qty | Year |
|---|---|---|---|---|---|---|
| Industrial Workshop | Australia | H-column base plates | 25mm, 4-hole M24 | A36 | 320 pcs | 2026 |
| Port Facility | Malaysia | Steel column bases for port structures | 30mm, 6-hole M30 | A572 Gr.50 | 85 pcs | 2020 |
| Equipment Foundation | Saudi Arabia | Heavy machinery base plates | 40mm, 8-hole M36 | A36 | 48 pcs | 2021 |
| Solar PV Structure | Chile | Ground-mount column bases | 16mm, 4-hole M20 | Q235B (galvanized) | 1,200 pcs | 2023 |
| Commercial Building | UAE | Main column base plates | 36mm, stiffened, 6-hole M36 | A572 Gr.50 | 64 pcs | 2022 |
| Substation Structure | Indonesia | Steel lattice tower bases | 20mm, 4-hole M24 | Q355B (galvanized) | 210 pcs | 2025 |
Packaging, Shipping & Lead Time of Steel Base Plates
Packaging & Shipping
Finished base plates are packed to withstand sea freight, land transport, and site handling. Packaging method is adjusted based on plate size, quantity, and destination.
| Item | Detail |
|---|---|
| Packing method | Steel crate or wooden pallet with steel banding |
| Inner protection | Rust-inhibitor paper between plates, dunnage under each layer |
| Labeling | Project name, item number, quantity, gross weight per package |
| Container loading | Standard 20'/40' GP or OT container, loading plan provided |
Lead Time
Production lead time depends on order quantity, plate thickness range, machining complexity, and current production schedule. The following are typical reference ranges:
| Order Type | Typical Lead Time | Remarks |
|---|---|---|
| Small batch (< 50 pcs) | 10 – 20 days | Standard configurations |
| Medium batch (50 – 300 pcs) | 20 – 35 days | Depends on hole pattern and welding |
| Large batch (> 300 pcs) | 35 – 50 days | Production schedule to be confirmed |
| Repeat order (existing drawings) | 10 – 15 days | Tooling and WPS already in place |
Note:Rush orders can be discussed case by case. We will evaluate feasibility and propose the best achievable schedule based on your target delivery date.
