What to Know Before You Order
YSL-4000A 28mm Anodized Aluminum Lean Tube is the structural element of a modular tube system — 28 mm outside diameter, coated steel core, cut and joined on site with hand tools. What it is asked to do is carry load across a span, and that is where most specification mistakes are made.
Allowable load falls sharply with span: our 28 mm lean pipe load rating tables give the figures for each wall thickness and span, with the deflection limit and safety factor stated so the arithmetic can be checked.
Points that decide whether it works
- Cut tube square and deburr before assembly. An out-of-square cut loads the joint unevenly and shows up later as a frame that will not sit flat.
- Chrome-plated and plain steel pipe exist for different reasons: plated for appearance and light corrosion resistance, plain for painting or where weld-in fittings are used.
- Ask for the mill certificate when the tube is going into a structural application. Wall thickness tolerance varies between suppliers and it is the figure that governs everything else.
- The coating is a wear part. PE and ABS both scuff, and neither survives being dragged across concrete. Cut ends should be capped or deburred so the steel core does not rust from the inside.
- Published load figures assume the weight is spread across the whole shelf. A fixture or a gearbox sitting in one spot bends the panel several times harder at the same total weight.
Frequently Asked Questions
Is the coating available in ESD?
Yes, with surface resistivity in the 10^6 to 10^9 ohm range. Specify it at enquiry stage; retrofitting means replacing tube rather than adding an accessory.
How much weight can 28 mm lean pipe hold?
It depends on span. As a working guide, 0.8 mm wall tube spanning 1200 mm carries around 34 kg under an L/200 deflection limit, while the same tube at 600 mm carries about 96 kg. Our load rating tables give the full matrix by wall thickness and span.
Which wall thickness should I choose?
Choose by span first, then by load. If the unsupported distance is over a metre, adding a support usually beats buying thicker tube — the cost is lower and the stiffness gain is larger.
