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Home / Connectors and Fasteners / 20/25/30/40mm Galvanized Square Tube Connector, Cast Iron Fitting, Tee Joint, No Welding Required

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material Cast Iron
Surface Treatment Galvanized
Compatible Tube Sizes 20mm, 25mm, 30mm, 40mm
Connector Configuration Tee Joint / Clamp
Installation Method Bolted (No Welding Required)
Corrosion Resistance High (Suitable for Outdoor Use)
Package Quantity 10 Pieces per Set
Product Color Silver Gray
Hardware Included Yes (Bolts and Nuts)
Primary Application Shelving, Fencing, Greenhouse Frames

5 reviews

A

Anonymous

Mar 20, 2026

Rating: 5/5

Great for greenhouse

Holding up well outside in the rain. The galvanization seems effective so far. Easy to assemble with a basic wrench.

A

Anonymous

Mar 09, 2026

Rating: 5/5

No welding is a plus

Saved me so much time on my fencing project. The bolts provided are decent quality and the connector holds weight well.

A

Anonymous

Feb 15, 2026

Rating: 5/5

Perfect for my workshop shelf

Exactly what I needed to build a sturdy storage rack without welding. The galvanized finish looks great and the fit on the 25mm tube was snug.

A

Anonymous

Feb 03, 2026

Rating: 4/5

Sturdy but tight fit

Good quality iron and very strong. Had to use a little force to get the square tube in, but once tightened, it does not move.

A

Anonymous

Jan 28, 2026

Rating: 4/5

Good value

Finish is a bit rough in some spots but nothing that affects performance. For the price, you cannot beat these connectors.

5 FAQ

Q: What tools are needed for installation?

A: You typically only need a standard wrench or socket set to tighten the bolts. No special tools or welding equipment are required.

Q: Does this fit 25mm square tube exactly?

A: Yes, this connector is designed to fit 25mm square tubes securely. Please select the correct size option when ordering.

Q: Will this rust if used outdoors?

A: The connectors are galvanized to provide high corrosion resistance, making them suitable for outdoor applications like fencing or greenhouses.

Q: What is the weight limit per connector?

A: Load capacity depends on the overall frame structure and tube thickness. For heavy loads, we recommend using thicker tubes and more support points.

Q: Are bolts and nuts included in the package?

A: Yes, each set comes with the necessary hardware including bolts and nuts to assemble the connectors immediately.

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