How strong are these compared to welding?

Depends on how heavy the product that you are exposing the connectors to/which to design? these connectors are an extremely tight fit when using 25x25x1.2mm Box Section (usually around 150-200kg load)

What are the dimensions....I want to build a square frame with the third connector acting as a leg to stand off some tiles

to suit 25x25x1.2mm square tubing

iam building a chair will these be srong enough to hold 2 people

Yes I built a stand in my shed and I'm 26stone and I stand on it regularly

Are the connectors easy to remove, so anything you build can be dismantled.

They are not designed to assemble and dissemble many times (the plastic is a very tight fit. you will shav a layer of plastic off each time if you dissemble and reassemble so the connectors will become lose over time).

Square Tube Connectors By Ross Castors Heavy Duty For Metal

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Connect with Confidence — Build Bold, Build Brilliant!

BUILT TO LAST - Engineered heavy-duty metal ensures unmatched durability for your toughest projects.
PERFECT FIT EVERY TIME - Precision-crafted for a snug, secure connection with 25 x 25mm tubes—no wobble, no fuss.
LOAD BEARING CONFIDENCE - Robust interlocking mechanism supports heavy loads, keeping your structures safe and steady.
TRIPLE ANGLE FLEXIBILITY - 3-way design empowers you to create complex, stable frameworks with ease.
QUICK EFFORTLESS ASSEMBLY - Hassle-free installation saves you time, letting you focus on what matters.

Ross Castors’ 25 x 25mm Heavy-Duty 3-Way Square Tube Connectors combine precision engineering and robust materials to deliver a versatile, secure, and easy-to-install solution for professional-grade metal tube frameworks. Ideal for demanding industrial and DIY projects, these connectors offer superior load capacity, corrosion resistance, and seamless integration for long-lasting structural stability.

Specifications

Asin	B00M0RN17A
Best Sellers Rank	125,684 in DIY & Tools (See Top 100 in DIY & Tools) 321 in Furniture Castors
Customer Reviews	4.7 4.7 out of 5 stars (14) 4.7 out of 5 stars
Date First Available	22 July 2014
Guaranteed Software Updates Until	unknown
Item Model Number	3W
Item Package Quantity	1
Item Weight	138 g
Manufacturer	Ross Castors
Material	Metal, Plastic
Part Number	3W
Product Dimensions	2.5 x 2.5 x 2.5 cm; 138 g
Shape	Corner Unit

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