Important sizes of copper tube : the weight and diameter

basic characteristics of copper pipes

plasticity of the annealed copper pipe rolled and annealed copper pipes durability make them almost a universal tool in the hands of the designer of piping systems for any purpose.Ability to select different quality products (M1 to M3), the diameter, the proportion with a wide range of fittings allows for the optimal layout of the pipeline in the residential and industrial buildings.

Specifications for this product for many years normalizes GOST 617, endures many editions (the latter released in 2006), but has kept the basic provisions:

• pipe rolled copper can be used in a wide temperature range from -200 to +250 degrees, and the rate of coolant is distributed as parameters, and on environmental conditions;
• are available in two types: seamless and welded, characterized by the production technology and operational characteristics;according to the method of manufacture: cold-and pressed;
• chemical composition are classified into seven types different content of alloying elements (bismuth, iron, zinc, tin, etc.), With the proportion of pure copper (+ silver) from 99.5 to 99.9%;
• weight copper pipes is determined by the size (outer diameter and wall thickness) and depends on the method of manufacture;It provides calibration gauge products in diameter from 3 to 360, and a shell of 0.8 to 10 mm.

Advantages and disadvantages of copper pipes

1. main advantage of the pipelines from the red metal is almost absolute chemical inertness of these structures to the most aggressive environments.This can be contaminated not only water but also the oil, and alkali weak acid concentration, specific industrial wastewater.
2. low coefficient of thermal expansion allows to operate the tube structure of Cu + Ag in high fluctuations of the internal and external temperature applications.
3. metal plasticity and malleability enable to produce a wide range of different sizes of pipe rolling (from 3 to 360 mm in outer diameter) and weight, respectively, ie, the total assortment of copper pipes as per GOST -.. 130 positions.
4. high specific density of the material - 8920 kg / m3 (compared to that of steel indicator - 7800, in plastics technology - only 900), which provides mechanical strength and long term (80 years) piping systems made of copper.However, this parameter directly determines the weight of the copper pipe, often referred to as their shortcomings.Debatable, we will discuss separately.
5. The main obstacle to the widespread implementation of pipe constructions from red metal is their price.Copper pipe 1/2 (12.7mm) costs 160 rubles on average.for rm, which is 2.5 times more expensive than steel equivalents.But in terms of operating costs such comparison is not entirely correct.

Marking, dimensions and weight of the copper pipes

To avoid confusion in the notation of the pipe range should be remembered that in accordance with GOST 617 All dimensions are given on the metric scale and 30h5,0 for pressing or in 27h0,1cold-copper pipes mean exactly the dimensions in millimeters (outer diameter and wall thickness), you see.The designations in inches 1/2, 3/4 or 27/1 mm version is also possible.

choice of materials for development of technological networks in the first place take into account their technical characteristics and operating conditions of the system.Due to its unique properties (strength, ductility, corrosion resistance) copper pipe, despite the hefty price tag and weight, in many cases, are indispensable.For example, when choosing metal pipes for heating, operating in conditions of high working and test pressure with reactive coolant.

If you look, the difference in weight of copper and steel pipes is not so great (for 12h1,0 section or 1/2, respectively, 307 and 271 grams / meter).With developments copper polymeric competes in operation at 4 times smaller cross-section equal to the hydraulic pressure holding.On this, too, should pay attention to the campaign in the construction market.