Corten Steel Raised Garden Beds and Corten Steel Planters

Oct 20, 2026 Leave a message

Gnee manufactures custom Corten Steel Raised Garden Beds and Corten Steel Planters for residential landscaping, public parks, commercial plazas, hotel entrances, and architectural projects.

 

Our product range includes rectangular raised garden beds, square corten steel planters, round corten steel planters, modular planting systems, and custom corten steel rings. These products can be fabricated in different dimensions, plate thicknesses, and structural configurations according to customer drawings.

 

As a weathering steel fabrication supplier, Gnee provides steel material sourcing, CNC cutting, bending, rolling, welding, pre-rusting, surface finishing, assembly, and export services.

 

Custom Corten Steel Raised Garden Beds for Outdoor Landscaping

Corten Steel Raised Garden Beds are elevated planting structures fabricated from weathering steel plates. They are commonly used for flower gardens, vegetable growing areas, courtyard landscaping, and commercial outdoor planting projects.

 

Unlike closed-bottom planter boxes, raised garden beds are generally designed with open bottoms, allowing plant roots to extend into the underlying soil when site conditions permit.

 

Gnee can manufacture rectangular, square, L-shaped, and modular raised garden beds with reinforced top edges, welded corners, connecting plates, and customized installation components.

Custom Corten Steel Raised Garden Beds
corten steel landscape edging
metal garden bed edging

Corten Steel Raised Garden Beds Specifications

Parameter

Customization

Product

Corten Steel Raised Garden Bed

Steel Grade

SPA-H, ASTM A588, S355J0WP, Q355NH

Plate Thickness

1.5 / 2 / 3 / 4 / 5 / 6 mm

Length

1000 / 1500 / 2000 / 3000 mm

Width

500 / 600 / 800 / 1000 mm

Height

200 / 300 / 400 / 600 mm

Structure

Open Bottom

Top Edge

Folded, Rolled, Reinforced

Connection

Welding, Bolts, Modular Connection

Surface

Natural Rust, Pre-rusted, Sealed

The steel thickness and reinforcement design should be selected according to bed height, soil depth, length, and planting load. For long raised beds, reinforced top rims, connecting supports, or internal tie bars may be necessary to limit outward deformation.

 

Large Custom Corten Steel Planters in Square, Round and Rectangular Shapes

corten steel round planter
round corten steel planters
corten steel rings

Large Custom Corten Steel Planters are fabricated metal planting containers designed for commercial landscaping, entrances, rooftop gardens, and residential outdoor spaces.

 

Gnee supplies custom corten steel planters in square, rectangular, round, tapered, and other fabricated shapes. Rusted steel planter boxes can include closed or raised bottoms, drainage outlets, removable liners, reinforced top rims, and mounting supports.

 

Square corten steel planters are suitable for symmetrical landscape arrangements, while round corten steel planters and custom corten steel rings are often selected for tree planting and circular garden designs.

 

Square Corten Steel Planters - Dimensions and Unit Weight

Size / 尺寸(mm)

Target Unit Weight

Quantity

Target 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

The above dimensions and weights are based on a customer's purchasing specifications. They are provided as a reference for custom planter manufacturing, not as verified finished-product weights.

 

Gnee can evaluate material thickness, welded construction, internal reinforcement, and drainage details to meet project-specific requirements.

 

Rectangular Corten Steel Planters - Large Format Specifications

Size(mm)

Target Unit Weight

Quantity

Target 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

Long rectangular planters require consideration of sidewall stiffness, bottom support, and soil pressure. For large units, Gnee can review reinforcement options and sectional fabrication methods before production.

 

Round Corten Steel Planters and Corten Steel Rings

Round corten steel planters can be manufactured through plate rolling and welding. Customers can customize the upper diameter, lower diameter, height, wall thickness, and bottom structure.

 

Corten steel rings can also be manufactured as open-bottom circular planting borders for landscape applications.

 

Need matching square and round planters for one project? Send Gnee your drawings, required dimensions, target unit weights, and quantities for a combined fabrication quotation.

 

Corten Steel Garden Beds and Planters - Material Grades and Steel Thickness

Gnee can source different weathering steel grades for custom raised garden beds, rusted metal planters, and weathered steel planters. Material selection should consider plate thickness, forming requirements, outdoor exposure, and project specifications.

Steel Grade

Standard

Material Type

SPA-H

JIS G3125

Hot-rolled weathering steel

Corten A / A242 Type 1

ASTM A242/A242M

Atmospheric corrosion-resistant steel

ASTM A588 Grade A

ASTM A588/A588M

High-strength low-alloy weathering steel

S355J0WP

EN 10025-5

Weathering structural steel

Q355NH

GB/T 4171

Atmospheric corrosion-resistant structural steel

 

Custom Fabrication of Corten Steel Raised Garden Beds and Planters

Gnee provides steel fabrication services for custom corten steel raised garden beds and planter boxes. Production processes include steel plate cutting, punching, CNC bending, rolling, welding, edge grinding, reinforcement, surface treatment, and assembly.

 

The fabrication process is selected according to product shape, plate thickness, dimensions, required surface finish, and installation design.

custom corten steel planters
corten steel square planter
rusted steel planter

Steel Fabrication Equipment and Processing Capacity

Equipment

Working Capacity

Application

CNC Laser Cutting 

Max. 2000 × 6000 mm; thickness up to 6 mm

Planter panels and garden bed walls

CNC Punching 

Max. 1500 × 4000 mm; thickness up to 3 mm

Drainage holes and decorative patterns

Hole Processing 

Common diameter 3–50 mm

Drainage and fixing holes

CNC Bending

Max. bending length 6000 mm

Folded rims, sides, edging

Laser Cutting Accuracy 

Target ±0.2 mm, subject to material and geometry

Cut panel dimensions

Welding

According to approved fabrication drawings

Corners, frames, stiffeners

Rolling

Diameter and thickness subject to machine review

Round planters and steel rings

CNC Laser Cutting 
CNC Punching 
CNC Bending
Welding

Fabrication Requirements for Raised Garden Beds

For corten steel raised garden beds, Gnee can manufacture folded upper edges, reinforced corners, modular connecting plates, ground fixing components, and multiple wall sections.

 

Bolt-connected or sectional structures can be evaluated for large landscaping orders to simplify transportation and on-site assembly.

 

Fabrication Requirements for Corten Steel Planters

For custom corten steel planters, processing focuses on wall forming, welded corners, reinforced rims, base plates, drainage systems, and surface finish.

 

Round and tapered planters may require plate rolling or multi-panel welding, while square and rectangular planter boxes are generally manufactured using cutting, bending, and welding processes.

 

Drainage and Reinforcement for Corten Steel Planters and Raised Beds

Drainage and reinforcement requirements differ between raised garden beds and planter boxes. Open-bottom raised garden beds generally allow water to drain into the underlying ground, while closed-bottom corten steel planters require dedicated drainage outlets. Both products may require reinforcement to resist soil pressure and deformation.

 

For continuously wet conditions, internal liners or protective separation systems can be considered to reduce direct contact between moisture-retaining soil and the steel surface.

Design Detail

Raised Garden Beds 

Planters

Bottom 

Open bottom 

Open or closed

Drainage 

Through suitable ground 

Designed outlets

Top Rim

Folded or reinforced

Folded or welded frame 

Reinforcement

Tie rods or supports

Stiffeners or inner frames

Installation

Ground-connected

Freestanding or anchored 

Optional Liner 

According to soil and design

Internal soil separation

 

Bulk Supply of Custom Corten Steel Planters and Raised Garden Beds

 

Gnee supports bulk procurement of custom corten steel planters and raised garden beds for landscaping contractors, garden product distributors, construction companies, and commercial developers.

 

A single order can include square corten steel planters, rectangular planting boxes, round corten steel planters, raised garden beds, and landscape edging components.

 

Customers can submit multiple product sizes and target unit weights for manufacturing assessment and consolidated shipment planning.

 

Quality Inspection and Export Services

Service

Gnee Supply Scope

Material Selection

Material grade and thickness review

Custom Fabrication

Cutting, bending, rolling, welding

Surface Treatment

Natural, pre-rusted, optional sealing

Dimensional Inspection 

Size and tolerance checks

Material Documentation 

EN 10204 3.1 when applicable and specified

Packaging

Pallets, wooden cases, protective packing

Shipping

FOB, CIF, DDP subject to destination

For full-container orders, Gnee can assess the loading arrangement according to finished dimensions, packaging volume, gross weight, and destination requirements. A 40-foot container loading plan must be confirmed rather than estimated from product weight alone.

 

Looking for a supplier of Corten Steel Raised Garden Beds, custom corten steel planters, or rusted metal planter boxes for your next landscaping project?

 

Gnee provides one-stop weathering steel fabrication services covering material sourcing, custom manufacturing, welding, pre-rusting, quality inspection, export packaging, customs clearance, and international freight coordination.

 

To receive a project quotation, please send us your drawings or specifications, including product type, dimensions, plate thickness, steel grade, quantity, target unit weight, surface treatment, bottom structure, and destination port.

 

 Send Your Drawings to Gnee for a Custom Fabrication Quote.