Thinwall PVC Pipe for Telescoping Pipe Projects

Introducing Thinwall PVC Pipe — The Key to Perfect Telescoping Builds

If you’ve ever tried to make PVC pipes slide or telescope into each other, you’ve likely discovered the challenge: standard Nominal Pipe Size (NPS) standards weren’t designed for that. Schedule 40 PVC pipe — including FORMUFIT Furniture Grade PVC — shares this limitation because the wall thickness leaves too little clearance between pipe sizes.

Up until now, you could only telescope a few size combinations, such as 1" into 1-1/4" or 1-1/2" into 2". That doesn’t leave much flexibility for builders, makers, and DIY engineers who want adjustable frames, sliding mechanisms, or custom-length applications.

A Smarter PVC Solution

To make telescoping and nesting simple, FORMUFIT now offers Thinwall PVC Pipe — precision-extruded tubing that slides perfectly over the next smaller pipe size while maintaining standard outer dimensions. These new Thinwall sizes include:

• 3/4” Thinwall PVC Pipe — accepts 1/2” PVC pipe
• 1” Thinwall PVC Pipe — accepts 3/4” PVC pipe
• 1-1/2” Thinwall PVC Pipe — accepts 1-1/4” PVC pipe

Each Thinwall pipe retains the same outer diameter as Schedule 40 for compatibility with all FORMUFIT PVC fittings, while providing a larger inner bore to accommodate smaller pipe sizes. The result? Smooth, snug-fitting telescoping movement that unlocks new design possibilities.

Made from the Same Proven Formula

Like all FORMUFIT products, Thinwall PVC is made from our proprietary Furniture Grade PVC compound — fully UV-resistant, impact-proof, and weather-durable. This means your telescoping assemblies perform just as reliably outdoors as they do in your workshop, without fading, brittleness, or performance loss.

Pair Schedule 40 and Thinwall PVC together to create adjustable stands, height-changing structures, or extendable assemblies from 1/2” up to 2” sizes.