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Home / Connectors and Fasteners / Cast Iron Pipe Connector for 1/2", 3/4", 1" Steel Pipes, Round Iron Pipe Fastener, 20mm/25mm Sunroom Railing Joint

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material Cast Iron
Surface Finish Black Powder Coated
Compatible Pipe Size 20mm - 25mm (3/4 inch - 1 inch)
Installation Method Slip-On with Set Screws
Welding Required No
Threading Required No
Primary Application Sunroom, Railing, Fence, Furniture
Corrosion Resistance High (Outdoor Suitable)
Package Contents Connectors and Mounting Screws
Product Weight 0.5 kg per unit

5 reviews

A

Anonymous

Apr 19, 2026

Rating: 5/5

Perfect for my balcony railing

These connectors made assembling my balcony railing so much easier. No need to weld or thread the pipes. They fit the 25mm tubes perfectly and feel very sturdy.

A

Anonymous

Mar 18, 2026

Rating: 5/5

Saved me a lot of time

I was dreading having to weld frames for my greenhouse. These fittings eliminated that need completely. Tightened the screws and the frame is solid.

A

Anonymous

Mar 16, 2026

Rating: 5/5

Solid construction

Very happy with the purchase. The set screws hold the pipe securely without slipping. No rust so far after being outside for a month.

A

Anonymous

Mar 02, 2026

Rating: 4/5

Good quality but heavy

The cast iron is thick and durable. Installation was straightforward. Only giving 4 stars because they are heavier than expected, but that means they are strong.

A

Anonymous

Feb 28, 2026

Rating: 5/5

Great for DIY furniture

Used these to build a industrial style shelf. The black finish looks professional and matches the pipes well. Highly recommend for DIY projects.

5 FAQ

Q: Will this fit a standard 20mm water pipe?

A: Yes, this connector is designed to fit pipes with a diameter between 20mm and 25mm securely.

Q: Do I need any special tools for installation?

A: No special tools are required. A standard hex key or screwdriver is sufficient to tighten the set screws.

Q: Can this support heavy weight for a structure?

A: These are heavy-duty connectors designed for structural support like railings and frames, but please ensure proper assembly for safety.

Q: Are the mounting screws included in the package?

A: Yes, the package includes the necessary set screws to secure the pipes within the connector.

Q: Is this suitable for outdoor use in rain?

A: Yes, the cast iron is powder coated to resist corrosion, making it suitable for outdoor environments like sunrooms and railings.

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