Understanding Shelving Pipe Dimensions - Misc. NZ
Understanding Shelving Pipe Dimensions

Understanding Shelving Pipe Dimensions

Words by Iron Moa

How long can I make my pipes?

Our pipes are precut. This is so we can apply quality surface treatment required to achieve a premium quality finish. Our longest length is currently 625mm.

To achieve longer lengths you may join them with a socket. We advise lengths be no longer than 2000mm to avoid sagging.

How can I achieve a specific length?

A customer may require a pipe at 952mm. This is typically for wardrobe rails. To achieve this we use a socket to join two pipes, them measure and cut each to make it exactly 952mm. Flanges are then de-threaded so the pipe can slot in.

It is not currently possible to supply custom lengths if both sides require threads.

How much of the pipe is thread?

Our pipes come with 25mm of thread length, that's 12.5mm thread length on each end. When fittings are attached a 325mm pipe will reduce to 300mm of exposed pipe.

This length is intentioned to fit wood planks that are 300mm deep.

What is the outer diameter of the pipes?

  • Our pipe walls are 3mm thick, therefore the Outer Diameter (OD) is as follows:
  • 15mm = 21mm OD
  • 20mm = 26mm OD

Pipe sizes (15mm, 20mm) are measured by the inner diameter. This is due to the industrial use of pipes for water and gas flow, however can confuse furniture enthusiasts. 

Why does wall thickness matter?

  • Thicker pipe allows sandblasting for paint adhesion and texture. Pipes less that 1.5mm typically do not allow for adequate surface treatment before painting, causing flaking and chipping.
  • Thickness adds structural integrity in shelving, rails, tables etc.
  • Increased durability. Thinner pipes typically strip thread on reuse and can dent or buckle more easily.

What is the weight ratio of Iron Moa pipe?

Pipe weight capacity is based on the design. Typically pipe fixed to flooring can support several hundred Kg's, however this can be increased with design alterations.

Shelving brackets are able to support only as much as screws recommend or wall bracing allows. For example, an overloaded shelf will collapse due to broken screws or inadequate internal wall bracing.

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