Stainless Steel Square Tube Connector Flange Base 20–40mm

$14.96 $16.91

Shipping calculated at checkout.

Heavy-Duty Stainless Steel Square Tube Connector & Flange Base

Build stronger, cleaner, and longer-lasting frames with this premium Stainless Steel Square Tube Connector Set. Designed for 20mm, 25mm, 30mm, and 40mm square tubes, this versatile connector delivers rock-solid joints for clothing poles, shelving racks, furniture frames, DIY workshop builds, and more. The rustproof stainless steel construction means it holds up beautifully in garages, laundry rooms, closets, and even humid outdoor areas.

Whether you're assembling a clothes rail, building a custom storage frame, or reinforcing an existing structure, this elbow corner joint and flange base gives you the precision fit and durability you need — without the wobble.

Made in Mainland China.

Key Features

Material: High-grade stainless steel — rustproof, corrosion-resistant, and built to last
Compatible Tube Sizes: 20mm (0.79 in), 25mm (0.98 in), 30mm (1.18 in), 40mm (1.57 in) square tubes
Type: Square post base / elbow corner joint / flange connector
Heavy-duty construction for reliable structural support
Includes mounting screws — ready to install right out of the box
Ideal for clothes poles, shelving units, display racks, DIY furniture, and workshop frames
Clean, modern finish that blends seamlessly into any interior or utility space

Specifications

Material: Stainless Steel
Compatible Tube Sizes: 20 / 25 / 30 / 40mm
Quantity: 1 pc (with screws included)
Customized: No
DIY Category: Metalworking

Package Contents

1 × Square Post Base / Flange Connector (with mounting screws)

Note: Due to differences in camera equipment, lighting, and display screens, the actual color may vary slightly from product images. Please allow a measurement tolerance of 1–2 cm (0.39–0.79 in) due to manual measurement.

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Frequently Asked Questions

Q: What square tube sizes does this connector fit?

A: This stainless steel square tube connector is compatible with 20mm, 25mm, 30mm, and 40mm square tubes, making it a versatile choice for a wide range of DIY and construction projects.

Q: Is this connector suitable for outdoor use?

A: Yes! The high-grade stainless steel construction is rustproof and corrosion-resistant, making it suitable for both indoor and outdoor environments, including humid or moisture-prone areas like laundry rooms and garages.

Q: Does the package include screws?

A: Yes, each package includes 1 square post base / flange connector along with the necessary mounting screws, so you can get started with installation right away.

Q: Can I use this connector to build a clothes pole or wardrobe rail?

A: Absolutely. This connector is specifically designed for use with clothes poles, wardrobe rails, shelving frames, and a variety of DIY metalworking projects requiring a sturdy elbow or corner joint.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.