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Round Tubes

Round Tubes — backed by Teknik Part's assurance and technical support.

Round Tubes Products(3)

Stainless Steel Round Tube — Round TubesMichel Tube Engineering
Michel Tube Engineering

›Stainless Steel Round Tube

1.4301 stainless steel conveying tubes with a smoothed internal weld. For the plastics / bulk material industry, supplied with a ground outer surface, ready to install.
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Aluminum Round Tube — Round TubesMichel Tube Engineering
Michel Tube Engineering

›Aluminum Round Tube

AlMgSi0.5 (6060 T66) aluminum conveying tubes. Used in conveying and vacuum lines for the plastics / bulk material industry; supplied ready to install.
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Wear-Resistant Round Tube and Glass — Round TubesMichel Tube Engineering
Michel Tube Engineering

›Wear-Resistant Round Tube and Glass

Wear-resistant conveying tubes. In lengths of 500 and 1500 mm; used especially as wear protection on straight runs in applications with highly abrasive materials.
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Round Conveying Tubes

The body of a central conveying line is formed by round tubes. The tube material directly determines the life of the line and the quality of the material: a wrongly chosen tube either wears through in a short time or contaminates the raw material it carries.

Stainless steel round tube

Which material, and when?

MaterialWhen it is chosenWatch out
Stainless steelStandard lines, food and medical, long lifeThe most common; balanced resistance to corrosion and wear
AluminumLines needing a light structure and frequently dismantledIts life is short with abrasive material
Wear-resistantGlass fiber reinforced and filled raw materialsThe investment is high, but the risk of wearing through disappears
GlassPoints where the flow has to be watched by eyeFragile, not placed where it can be struck

Rule: if your raw material contains glass fiber, mineral filler or a hard additive, a standard tube wears through in a few months. With abrasive material it is above all the elbows and the last section of the line that wear.

Our products: stainless steel, aluminum, wear-resistant and glass round tubes.

Related: Pipe Elbows · Pipe Connectors · The system as a whole: the vacuum conveying line

Three decisions in choosing a tube

1. Material. Stainless steel is the standard for the material line; aluminum is preferred on the vacuum line for its light weight and cost; wear-resistant tube and glass are reserved for abrasive raw material.

2. Diameter. The diameter determines the conveying speed. In a narrow diameter the speed rises; wear and angel hair formation accelerate. In a wide diameter the speed falls; below a certain threshold the granulate settles on the bottom of the tube and blockage begins. The right diameter is calculated together with the length and the flow rate of the line.

3. Surface quality. It is critical that the internal weld is smoothed. The smallest protrusion on a weld seam slows the granulate down; a build-up starts at that point and wear accelerates.

Frequent mistakes

  • Making the whole line wear-resistant — unnecessary cost; what matters are the elbows and what follows them
  • Using aluminum on the material line — with abrasive granulate it thins out in a short time
  • Leaving a step at the connection points — both a pressure loss and a build-up point
  • Fixing the line without leaving an allowance for thermal expansion

For connections pipe connectors are used, for turns elbows, and for fixing system components.