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Aerospace & Controlled Industrial Tubing Manufacturing Methods

 

Accu-Tube uses multiple cold draw benches, annealing furnaces, vapor degreasers, straighteners, polishers, and lathes to produce stainless steel and high-nickel alloy tubing in more than 20 alloys that meet the highest quality standards in: welded-and-drawn (DOM) or cold-drawn (CDOD) form, in straight lengths (up to 32 feet), or in coils.

Drawn-Over-Mandrel (DOM) Tubing

DOM tubing is made from a cold-drawn welded tube that is drawn through a die and over a mandrel. This technique is often used with larger-diameter tubes with high OD-to-wall ratios. With pressure rating up to 21,000 PSI, these tubes are a reliable alternative to seamless products. Made to ASTM A249 specifications.

Benefits:

  • Uniform wall thickness with more exact OD and ID tolerances
  • Uniform grain structure and controlled hardness
  • High yield and tensile strength
  • Smooth and clean OD and ID surfaces
  • Superior concentricity OD and ID
  • No visible weld flash

Cold-Drawn Outside Diameter (CDOD) Tubing

CDOD tubing is made by reducing the diameter of a tube by drawing it through successively smaller dies without heating the material, which increases its tensile strength. Cold-drawn tubing is a good choice for applications where tolerances, concentricity, straightness, and surface condition are important factors. Made to ASTM specifications.

Benefits:

  • More durable than welded tubing
  • Most cost-effective tubing manufacturing process
  • Smoother, sleeker OD finish (compared with “as weld”)
  • Fractional and custom sizing
  • Less ovality

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Custom Tubing

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Select sizes are available in small quantities for quick delivery through Chamfr.com.

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