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Pipe, Bends & Bellows

This page is for people building their own exhaust: bends, straight tube, flanges, clamps, hangers, heat materials and titanium stock, in SS304, Ti Gr2 and Inconel 625. Sizes are given as diameter (1.5 in to 4 in) and wall thickness so you can order against a drawing.

Titanium saves weight but needs argon shielding and the right process; SS304 is easier to work with and the default for most fabrication.

What to check before ordering

Fix the diameter first, then choose wall thickness and bend radius.
Titanium is harder to weld — confirm your process capability before buying stock.
Flanges and clamps should be bought as a set with the tube; mixing brands often creates tolerance problems.

FAQ

Can titanium be welded with a normal welder?

No — it needs argon shielding and a dedicated process.

What wall thickness should I choose?

1.5 mm is the common choice; go thicker for high-boost applications.

Start here

Fabrication stock is bought by outside diameter and wall thickness, not by nominal pipe size. The sections below are the sizes most builds order first.