Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Assemblies and Fasteners
Origin	-
Material	Cast Iron with Galvanized Steel Compatibility
Compatible Pipe Sizes	4/8 inch, 6/8 inch, and 1 inch round tubes
Installation Type	Weld-free bolted assembly
Finish	Black powder-coated cast iron
Application	Shelving units, greenhouse frames, and fencing
Load Capacity	Supports up to 150 lbs per joint (depending on frame design)
Hardware Included	Bolts, nuts, and washers included
Corrosion Resistance	High resistance suitable for outdoor use
Joint Angle	Fixed 90-degree connection
Package Quantity	Set of 10 connectors

6 reviews

Anonymous

Mar 28, 2026

Rating: 4/5

Good value for money

Solid construction for the price. Assembly took a little time as you need to ensure everything is aligned before tightening, but the end result is a very rigid frame.

Anonymous

Mar 28, 2026

Rating: 4/5

Great quality, slightly heavy

The cast iron is very durable and feels premium. They are a bit heavier than expected, which actually adds to the stability of the shelf I built. Took off one star because the instructions could be clearer.

Anonymous

Mar 19, 2026

Rating: 5/5

Perfect for my greenhouse project

These connectors made building my backyard greenhouse incredibly easy. No welding needed, and they fit the galvanized pipes perfectly. Very sturdy once tightened.

Anonymous

Mar 13, 2026

Rating: 5/5

Sturdy and reliable

Bought these for a workshop storage system. They hold heavy tools without any wobble. The galvanization on the pipes paired with these cast iron joints is a great combo for rust prevention.

Anonymous

Mar 06, 2026

Rating: 5/5

Exactly what I needed

I used these for a custom clothing rack. The 1-inch fit was spot on. The black finish looks professional and matches my industrial decor style.

Anonymous

Mar 06, 2026

Rating: 5/5

Easy DIY solution

As someone who cannot weld, these are a lifesaver. I built a entire patio cover frame using these connectors and standard pipes. Highly recommend for DIY enthusiasts.

5 FAQ

Q: Is there a weight limit per connector?

A: While individual capacity varies by frame configuration, each joint is tested to support significant structural loads. For heavy shelving, we recommend adding vertical supports every 4 feet.

Q: Are the bolts included stainless steel?

A: The included hardware is zinc-plated steel for corrosion resistance. For highly corrosive environments, we recommend upgrading to stainless steel bolts separately.

Q: What tools are required for installation?

A: You only need a wrench or socket set to tighten the bolts. No special tools, drilling, or welding equipment is necessary.

Q: Will these fit standard schedule 40 pipes?

A: Yes, these connectors are designed to fit standard nominal pipe sizes including 1/2 inch (4/8), 3/4 inch (6/8), and 1 inch schedule 40 pipes.

Q: Can these be used outdoors in rain?

A: Absolutely. The cast iron is powder-coated and designed to work with galvanized pipes, making them suitable for outdoor applications like greenhouses and fences.

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