Copper tube in accordance with GOST 16774 - a cold-(Drawn) tube of square or rectangular cross-section. It is made of copper the following brands: M1; M1r and M0b (chemical composition must comply with GOST 859).
Thanks to the excellent performance characteristics of copper tube is widely used in various industries and the national economy: mechanical engineering; instrumentation; construction, manufacture of HVAC equipment; production of decorative products; manufacturing of windings for starters.
The operation of a copper tube has a number of advantages over other similar materials: a wide range of applications; high thermal conductivity and electrical conductivity; ease in handling; plastic; high anti-corrosion properties.
Available in copper tube in the following sizes. Height - 6.0; 5.9; 5.1; 5.0; 4.5; 4.0 (mm). Width - 12.5; 11.8; 11.6; 11.2; 10.9; 10.0; 9.5; 9.3; 9.0; 8.6; 8.5; 7.5; 7.4; 6.0; 5.9; 5.1; 5.0 (mm). Length - 200 m in the drum.
Marking, which is indicated by a copper tube without fail, include the following notation:
1) The purity of the alloy - M1 or M2.
2) cross-section form - KV or PR - rectangular or square.
3) The manufacturing method - D - pull.
4) Accuracy of manufacturing - H or P - normal or elevated.
5) State of the material - M - soft.
6) Dimensions in mm.
7) The length of pipe.
The copper tube must meet the following requirements:
- Tightness. During tests copper tube must withstand a pressure of 2.9 MPa and 6.9 MPa for tubes with a wall thickness of 1 mm and 1.3 (1.5) mm, respectively.
- Elongation - at least 35% at break.
- Tensile strength - at least 200 MPa.
- Resistivity from 0.0175 to 0.0195 Ohms x mm 2 / m (Ohm x m).

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