Copper tube grade is common: t2, tp2, t3, t4, etc., divided into soft and hard two kinds. Copper is industrial pure copper. Divided into T1, T2, T3, purity in descending order, 99.95%, 99.90% and 99.70%. Ordinary brass, divided into H96 (H on behalf of brass yellow), H90, H85, H70,,, has been to H59. The meaning is that the copper content decreases in turn, the copper content is 96%, 90%... And so on. There is also 0.1% iron, 0.5% nickel, and some other impurities. If the brass to add a variety of alloying elements, it constitutes a number of such as nickel brass, tin brass, beryllium brass and other brass alloys. Copper tube, also known as copper tube, non-ferrous metal tube a kind of, is pressed and drawn seamless tube. Copper tube is lighter in weight and has high low-temperature strength. Commonly used in the manufacture of heat transfer equipment (such as condensers, etc.). It is also used to assemble low-temperature piping in oxygen production equipment. Small diameter copper tube is often used to transport pressurized liquids (such as lubrication system, oil pressure system, etc.) and used as instrumentation pressure measurement tube.
Copper pipe has a strong, corrosion-resistant properties, and become a modern contractor in all residential commercial housing water piping, heating, cooling piping installation of choice.
1, purple copper pipe is economical. Because copper pipe is easy to process and connect, so that when it is installed, it can save material and total cost, stability and reliability, can save maintenance.
2, purple copper pipe is lightweight. For the same inner diameter of the internal threaded pipe, copper pipe does not need the thickness of ferrous metal. When installed, copper pipe transportation costs are smaller, maintenance is easier and takes up less space.
3. Copper tubes can change shape. Because copper pipe can be bent and deformed, it can often be made into elbows and fittings, and smooth bends allow copper pipe to be bent at any angle.
4, copper pipe is easy to connect.
5, purple copper pipe is safe. It does not leak, does not promote combustion, does not produce toxic gases, and is corrosion-resistant.
Purple copper pipe is hard, not easy to corrode, and high temperature and high pressure resistance, can be used in a variety of environments.
The executive standards of purple copper pipe are GB/T1527-2017 "copper and copper alloy drawn pipe", GB/T17791-2017 "copper and copper alloy seamless pipe for air-conditioning and refrigeration equipment", GB/T18033-2017 "seamless copper water pipe and copper gas pipe", GB/T20928-2020 "seamless internal threaded copper pipe", GB/T1531-2020 "the Copper and Copper Alloy Capillary Tubes", YS/T650-2020 "Seamless Copper Tubes for Medical Gases and Vacuum
Weight calculation
Copper is pure copper: pure copper is purple-red, also known as purple copper. The density of pure copper is 8.96, and the melting point is 1083℃.
The mass of copper tube is calculated as follows: G=8.96πδ(D-δ)/1000
G: mass kg δ: tube wall thickness mm D: tube diameter mm
