Product Description
Steel Plate Floor Flange for Chain Link Posts — Galvanized, Weldable Base Plates (Multiple Sizes & Thicknesses)
- Weld-On Strength — Create a rigid post-to-slab connection by welding your round post to the plate
- Galvanized Protection — Zinc-coated steel resists rust and weather for long service life
- Pre-Drilled Mounting Holes — Bolt to concrete, wood, or steel with anchors suited to your surface
- Size & Thickness Options — Choose from 4″, 6″, or 8″ plates in 1/4″ or heavy 3/8″ thickness
- Built for Demanding Installs — A durable, heavy-duty solution where digging isn’t practical
This galvanized weldable floor flange plate is a reliable way to surface-mount chain link posts on concrete pads, decks, or structural steel. Weld the post to the plate, then anchor the plate through its corner holes for a clean, rigid connection. Available in multiple plate sizes and two thicknesses (1/4″ and 3/8″), it’s a smart, heavy-duty choice for enclosures, gates, rooftop or slab-on-grade applications where you need strength and corrosion resistance in a compact footprint.
Why Choose This
- Rugged assembly — Welded post connection plus through-bolted anchorage
- Corrosion-resistant finish — Galvanized steel stands up to year-round exposure
- Flexible mounting — Works on concrete, wood, or steel with appropriate anchors
- Right-sized options — Plate sizes matched to common post diameters help simplify selection
Specifications
| Flange Plate Size | 4" x 4" x 1/4" | 6" x 6" x 1/4" | 6" x 6" x 3/8" (Heavy) | 8" x 8" x 1/4" | 8" x 8" x 3/8" (Heavy) |
| Post Size | Up to 3" | Up to 4-1/2" | Up to 4-1/2" | Up to 6-5/8" | Up to 6-5/8" |
| Weight | 1 lbs | 1.3 lbs | 2.85 lbs | 4 lbs | 5.1 lbs |
| Material | Galvanized Steel | Galvanized Steel | Galvanized Steel | Galvanized Steel | Galvanized Steel |
| Finish | Silver | Silver | Silver | Silver | Silver |
| Hardware | None | None | None | None | None |
| Typical Usage | Residential / Light Commercial | Residential / Light Commercial | Commercial | Commercial | Commercial / Light Industrial |
Installation
Weld the plate to your round post (centered or offset as required) and allow to cool. Touch up any bare steel at the weld with a zinc-rich coating. Position the assembly and anchor the plate to the surface using fasteners appropriate for the base material (e.g., concrete wedge anchors for slab installs, structural screws/lag bolts for wood, or bolts/washers for steel). Verify the post is plumb before final tightening. Anchors not included.
Buying Guide
- Choose plate size & thickness: Match the “Post Size” guidance above; select 3/8″ plates where greater stiffness is desired.
- Select anchors for your surface: Use code-compliant anchors rated for concrete, wood, or steel as applicable.
- Plan your weld: Determine center or offset weld location to align with your fence layout and rail geometry.
- Environmental care: Rinse galvanized surfaces after exposure to de-icing salts for longest life.
Frequently Asked Questions
- Are these plates pre-drilled?
- Yes. The plates include corner mounting holes for anchoring to your surface.
- Do they include anchors?
- No. Select anchors based on your surface material and local code requirements.
- Can I mount to wood or steel, not just concrete?
- Yes. Use appropriate fasteners for the base material (e.g., structural screws for wood, bolts for steel).
- Should I do anything after welding?
- Yes. After welding the post to the plate, coat exposed steel at the weld with a zinc-rich touch-up for added corrosion protection.
- When should I choose 3/8″ over 1/4″?
- Use the heavier 3/8″ plate where higher stiffness or heavier posts are required by your design or specifications.
Comparison
- Steel Plate Floor Flange (this item): Weld-on post connection; pre-drilled plate anchors to surface; compact and robust.
- Malleable Floor Flange (set-screw style): Post seats in a tall collar and is held by set screws; no welding required; convenient for lighter assemblies.
- Embedded Posts in Footings: Highest lateral capacity when set in concrete; requires excavation and cure time.
