Annealed and not annealed pipe

You are interested in annealed and unannealed copper pipe? Supplier KMZ offers to buy copper at economical price. The provider ensures timely delivery of products at any address specified by the consumer.

Annealing of copper pipes and tubes

Copper poorly withstands bending stresses, which is especially beneficial when trying of the plastic deformation of tubular steel. Bending changes the macrostructure of the inner layers of copper, and the more the metal is processed, the more brittle it becomes, until it reaches the breaking point with the subsequent formation of cracks. To bend a tube made of copper, without creating the conditions for brittle fracture of the metal, the product should be annealed. Annealed copper becomes softer and more plastic.

Technology annealing

Annealing is necessary

  • Oxyacetylene burner;
  • Hammer;
  • Water.

The sequence of operations following the annealing. The valves on the oxygen cylinders and acetylene is completely disabled. Head torch through hoses connected to the cylinder, the flame should be light blue in color. Slow changes in the amount of supplied oxygen is mixed with acetylene, the flame of bright orange color should be light blue.

After that, the torch goes to the place of the copper pipe, the plasticity of which need to be increased. The flame should wrap around the copper pipe on top, while the workpiece to acquire a cherry red hue. After that, the burner is shut off, successively cutting off first the oxygen valve and then the acetylene valve. The copper pipe is cooled in water, then using a hammer, a pipe can be bent to the desired contour.

The use of annealed copper tubes

Copper tube after annealing are soft, seamless, flexible and is suitable for forming any line or curve of the bend. Depending on the type or class of annealed copper pipes are used in various industrial applications: refrigerators, cars, water and oil pipelines, heat exchangers, etc. Of annealed copper pipes manufactured compression fittings, unlike conventional copper pipes, in such articles is always determined by the outer diameter, which is the choice of the right size fitting.

Mechanical characteristics of annealed copper:

  • The limit of temporary resistance, MPa — 220…240;
  • Yield strength, MPa — 38…60;
  • Relative tensile elongation, % — 40…52;
  • The relative narrowing of the cross-sectional area, % — 70…72.

Buy

You are interested in annealed and unannealed copper pipe? Supplier KMZ offers to buy the copper tube at economical price. The provider ensures timely delivery of products at any address specified by the consumer.

Supplier, price

Buy copper pipe from a vendor KMZ can at an affordable price. The price is formed based on the European standards of production. Buy the copper pipe at a reasonable price, you can wholesale or retail. Regular customers can take advantage of the discount system of discounts from the company KMZ.

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Stanislas

Stanislas

sales department

+7 (905) 233-21-42