Seamless tubes made by Mera Bellows:

Precise deep-drawing guarantees low tolerances


Mera Bellows tubes are seamless and their closed end can be formed in almost any way. If open-ended thin-wall tubes are requested, we can cut the bottom. Wall-thicknesses start from 0.064mm. Due to our manufacturing techniques, it is possible to achieve precisions as low as 0.1 mm to 0.4 mm in diameter and of 0.004 to 0.015 mm in wall thickness. We are proud of the exceptional wall to diamater ratios that we can realize. Also special shapes such as axial ribs can be hydroformed which allows R&D activities in various fields and applications. Our deep-drawn tubes are suitable for further plastic deformation on customer side. On demand we supply in annealed condition according your specifications.


Mera Bellows produces thin-wall tubes up to ca. 50mm diameter and a max. length of 450 mm in bronze, brass, stainless steel, monel or beryllium-copper (CuBe2) alloys. Precision tubes in pure Copper, Aluminium or Ni-Cr-Mo alloys are not part of our product portfolio.


The chart shows the tube sizes that Mera Bellows is able to produce.
The tube-length “L” is plotted against the diameter “D” and the wall thickness “d”.

Applications of our customers:

Stainless steel sensor housings (incl. sub-sea usage), medical engineering, plug connections, cartridge/ brass housings for defense applications (mortar ammunition, to be operated from armoured vehicles), phosphor bronze projectiles for regular ammunition, liquid distribution, heater cups for reduced-risk tobacco products (holder tube for the tobacco sticks in vapor-/e-cigarette assemblies) high-precision body for musical instruments, such as pianos.


Further readings:

High precision seamless tubes and deep-drawn metal sleeves