WELD ON HINGE SET PIN & SOCKET 20MM ROTECH FG20

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WELD ON HINGE SET PIN & SOCKET 20MM ROTECH FG20 at a glance

Looking for a simple, yet strong and reliable hinge.

These weld on hinges are perfect for any steel gate.

Whether you plan to use them for your farm gate, trailer or dog box, these zinc plated hinges are cheap and economical.

The 20mm option is an excellent ‘all-rounder’.

The standard 20mm is wider so it sits on the RHS better.

The larger option is great if you want to wrap it around the pipe a little bit further.

Installing your gate so you can pull it off, is pretty simple:

Weld the sockets onto the gate itself.
Measure the distance between the sockets.
Weld the pins onto your post, one at the bottom, and one at the top.
Make sure you have left plenty of room at the bottom so the gate clears the ground.
Double check the pins are the same distance apart as your sockets.
The pins should be pointing up.
Lift your gate up and drop it on the pins.

If you want to make sure your gate is secure and can’t be removed:

Weld your bottom pin onto your post (pin pointing up) and your bottom socket on your gate.
Sit your gate on the bottom pin.
Weld your top socket to your gate.
Drop your pin into the top socket. (Pin is pointing down)
Weld the pin to the post.

Clean the gate frame and hinge mounting area with a wire brush to remove rust and dirt before welding. Position the hinge set on the gate frame, ensuring it's square and level, then tack weld at each corner before running full welds to avoid distortion. Let the metal cool naturally after welding—don't quench it with water as this can crack the weld. Once cooled, hang your gate and check the swing is smooth without binding. Tips: Mark your hinge positions with a soapstone before you start welding so you don't end up with a gate that won't hang straight. Use a spirit level when tacking the hinges to save yourself the frustration of a gate that sags or swings shut on its own. If you're welding in hot weather out here, work early morning when the metal is cooler—it'll give you better control and stronger welds.

Common Questions

What are these hinges used for?

These weld on hinges are designed for steel gates. They work well on farm gates, trailers, dog boxes, and other steel gate applications.

What size is the 20mm option?

The 20mm is the standard size and is wider, so it sits on the RHS better. It's described as an excellent all-rounder for most applications.

Are these hinges durable?

Yes. These hinges are zinc plated, which provides corrosion resistance. They're strong and reliable, and designed to be economical as well.

Do I need welding equipment to install these?

Yes. Installation involves welding the sockets onto your gate and the pins onto your post. You'll need welding equipment and some basic measuring to get the spacing right between the sockets and pins.

Do you ship this product Australia-wide?

Yes, this product ships Australia-wide via Australia Post or road courier. Select your preferred shipping method at checkout.

Can I Click & Collect from Gympie?

Yes — Click & Collect is available from our store at 55 Tozer St, Gympie. Open Mon–Fri 8am–5pm and Sat 8am–12pm. Click & Collect is FREE on orders of $175 or more, or a flat $10 on orders under $175. Select Click & Collect at checkout and we will have your order ready.