Custom Corten Steel Planters are manufactured from weathering steel and designed for commercial landscaping, public gardens, hotel entrances, residential courtyards, and architectural projects.
Available as square, rectangular, round, tapered, or specially shaped designs, these outdoor metal planters can be manufactured to project-specific dimensions and construction requirements.
Gnee provides custom corten steel planters with steel plate cutting, CNC bending, rolling, welding, edge finishing, pre-rusting, and assembly services.
Customers can specify dimensions, material grades, plate thickness, reinforcement, drainage holes, base structures, and surface finishes according to architectural drawings.
Custom Corten Steel Planters Specifications
|
Item |
Available Options |
|---|---|
|
Product |
Corten Steel Planter / Corten Planter Box |
|
Material |
SPA-H, Corten A, ASTM A588, S355J0WP, Q355NH |
|
Thickness |
1.5 / 2 / 3 / 4 / 5 / 6 mm |
|
Shape |
Square, Rectangular, Round, Tapered, Custom |
|
Size |
Customized according to drawings |
|
Surface |
Natural Weathering, Pre-rusted, Sealed Finish |
|
Edge |
Folded Edge, Rolled Rim, Welded Rim |
|
Bottom |
Open Bottom, Closed Bottom, Raised Bottom |
|
Drainage |
Custom Holes, Removable Tray, Liner |
|
Assembly |
Fully Welded, Modular Assembly |
|
Packaging |
Pallets, Wooden Cases, Protective Wrapping |
Plate thickness and structural configuration should be selected according to planter dimensions, soil depth, planting load, installation environment, and transportation requirements. Large rectangular planters may require additional internal reinforcement to control sidewall deformation.
Square Corten Steel Planters - Sizes and Custom Manufacturing
Square corten steel planters are commonly used for commercial entrances, pedestrian streets, rooftop gardens, and residential courtyards. Their symmetrical structure makes them suitable for repeated placement and modular landscape arrangements.
Gnee can fabricate square corten steel planters with welded corners, reinforced walls, folded top edges, and custom drainage systems.
Square Corten Steel Planter Size Reference
|
Dimensions (mm) |
Target Weight |
Quantity |
Total |
|---|---|---|---|
|
400 × 400 × 400 |
15 kg |
36 |
540 kg |
|
500 × 500 × 500 |
23 kg |
36 |
828 kg |
|
600 × 600 × 600 |
33 kg |
36 |
1,188 kg |
|
500 × 500 × 1000 |
38 kg |
24 |
912 kg |
|
Total |
132 pcs |
3,468 kg |
For square corten steel planters, buyers can provide target unit weights along with dimensions and quantities. Our engineering team can review the proposed plate thickness, base design, and reinforcement configuration before finalizing the fabrication plan.
Large Rectangular Corten Steel Planter Boxes
Large rectangular corten steel planter boxes are designed for linear planting, outdoor space division, and commercial landscaping. Compared with square planters, longer units require additional attention to sidewall stiffness, soil pressure, and support structure.
For planters reaching 1500–2000 mm in length, Gnee can review options such as internal stiffeners, reinforced top rims, and supported base panels. Structural dimensions are determined according to the actual planting load and installation conditions.
Rectangular Corten Steel Planter Size Reference
|
Dimensions (mm) |
Target Weight |
Quantity |
Total |
|---|---|---|---|
|
1000 × 500 × 500 |
35 kg |
24 |
840 kg |
|
1500 × 500 × 500 |
48 kg |
24 |
1,152 kg |
|
2000 × 500 × 500 |
60 kg |
8 |
480 kg |
|
Total |
56 pcs |
2,472 kg |
Round Corten Steel Planters and Custom Corten Steel Rings
Round corten steel planters are suitable for tree planting, circular landscape arrangements, hotel entrances, and public garden installations. Gnee can manufacture cylindrical and tapered shapes through plate rolling, circular welding, and edge finishing.
Custom corten steel rings are also available for landscape edging and circular raised planting beds. Unlike closed-bottom planter pots, corten steel rings are generally designed as open-bottom structures for installation directly into landscaped areas.
Round Planter Customization
|
Parameter |
Custom Options |
|---|---|
|
Diameter |
According to drawings |
|
Height |
According to drawings |
|
Shape |
Cylindrical, Tapered, Conical |
|
Wall |
Rolled Steel Plate |
|
Welding |
Longitudinal or Circular Seams |
|
Rim |
Folded, Rolled, Reinforced |
|
Bottom |
Open, Closed, Raised |
|
Finish |
Raw, Pre-rusted, Sealed |
Please provide the upper diameter, lower diameter, height, wall thickness, and base configuration when requesting a quotation for round corten steel planters.
Custom Corten Steel Planters - Six Design Options
Geometric Corten Steel Planters
Square, rectangular, and cubic designs manufactured through plate cutting, CNC bending, and welding. Suitable for commercial plazas and office buildings.
Tapered Corten Steel Planters
Available with wider upper openings, angled sidewalls, and reinforced rims. Custom taper angles can be manufactured according to drawings.
Perforated Corten Steel Planters
Laser-cut geometric patterns, botanical motifs, and custom logos can be combined with internal liners and structural reinforcement.
Textured Corten Steel Planters
Corrugated or ribbed surfaces can be produced using suitable forming methods and tooling, subject to pattern depth and material thickness.
Modular Corten Steel Boxes
Multiple planter units can be arranged into L-shaped, stepped, or linear configurations for large landscaping projects.
Sculptural Corten Steel Planters
Custom folded, curved, or multi-panel welded structures can be fabricated following an engineering review of the design.
Corten Steel Planter Manufacturing and Fabrication Capabilities
Gnee provides steel fabrication services for custom corten steel planters, including plate cutting, forming, rolling, welding, surface preparation, and assembly. Production drawings can incorporate drainage systems, reinforcement frames, mounting points, and other functional details.
Corten Steel Planter Fabrication Equipment
|
Process |
Equipment |
Capacity |
|---|---|---|
|
Laser Cutting |
CNC Laser Cutting Machine |
Steel plate up to 2000 × 6000 mm, thickness up to 6 mm |
|
Punching |
CNC Turret Punch |
Up to 1500 × 4000 mm, thickness up to 3 mm |
|
Hole Processing |
Laser / CNC Punching |
Hole diameter 3–50 mm |
|
Perforation |
CNC Punching / Laser |
Open area 10–40% |
|
Bending |
CNC Press Brake |
Bending length up to 6000 mm |
|
Cutting Accuracy |
CNC Laser |
±0.2 mm |
|
Rolling |
Plate Rolling Machine |
Diameter and thickness subject to review |
|
Welding |
Welding Equipment |
Seam welding and structural reinforcement |
The maximum processing size depends on plate thickness, material grade, bending geometry, machine configuration, and finished component design.
For large planters, fabrication can involve multiple welded panels rather than forming the complete shell from one sheet.
Rusted Steel Planter Surface Finishes and Corrosion Protection
Corten steel planters develop a rust-colored surface patina when exposed to suitable atmospheric conditions. This weathering process creates the appearance associated with rusted steel planters and weathered steel planters.
For architectural projects requiring a consistent visual finish before installation, Gnee can provide controlled pre-rusting and optional surface sealing. The treatment process is selected according to the specified appearance and installation environment.
|
Finish |
Description |
|---|---|
|
Raw Steel |
Untreated weathering steel |
|
Pre-rusted |
Controlled oxide layer |
|
Sealed Rust |
Patina with protective coating |
|
Painted |
Coated surface |
Quality Inspection and Export Packaging for Custom Corten Steel Planters
Before shipment, custom corten steel planters can be inspected according to approved drawings, purchase specifications, and agreed quality requirements. Inspection covers material identification, finished dimensions, welded joints, drainage details, and surface condition.
Gnee also provides export packaging and international shipping coordination for fabricated weathering steel products.
Request a Quote for Large Custom Corten Steel Planters
Looking for a manufacturer of large custom corten steel planters, square corten steel planters, or round corten steel planters?
Gnee provides a complete supply and fabrication service, from weathering steel material selection and custom manufacturing to surface treatment, inspection, export packaging, customs clearance, and ocean freight coordination.
