What is the minimum thickness for corten steel planters?
What is the minimum thickness for corten steel planters?
For planters under 500mm tall, 1.5mm corten steel is structurally adequate but may show slight bowing when filled with wet soil. The industry standard is 2mm for planters up to 600mm height and 3mm for taller units (600-1000mm). For extra-large planters exceeding 1000mm height or 2000mm length, 4mm thickness with internal stiffening ribs is recommended to prevent deformation from soil pressure.
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