The competition of refrigeration copper pipe market is fierce, so it is necessary to expand new fields and enhance the competitiveness of products. Copper prices, which had been running at high levels in 2012, continued to fall in 2013, while the processing prices of refrigerated copper tubes also showed a downward trend. With the implementation [...]
Copper pipe welding technology is the most important part, and it is an important guarantee whether the copper pipe can be successfully put into use in various industries. The position of filler metal is about 2 mm above the nozzle, and the position of filler metal must be guaranteed in the front and back of [...]
The main contents of copper pipe welding include the structure and types of copper pipe welding flame and preheating state. Welding flame structure is divided into three parts: flame core, internal flame and external flame, and the temperature is the highest at 3 mm in front of the flame core, which can reach about 3,000 [...]
This article is a special part of the inspection of copper pipe welding. According to the gradual inspection of unqualified items, it is necessary to rework if problems arise. The inspection unqualified items of copper pipe welding are as follows: 1. Overburning: Appearance judgement shows that there are burn marks and rough pits in the [...]
How are copper tubes made? Today, I would like to share with you the copper tube refining process. The main steps are as follows: 1. Gas Protected Melting and Insulation - Horizontal Continuous Casting Copper Tube Billet - Milling Except Surface Defects - Three Roll Planetary Rolling - On-line Coiling - Three Series Joint Tension [...]
Main usage of Copper pipes become widely that is a non-ferrous metal closely related to human beings. It is widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields. It is second only to aluminum in the consumption of non-ferrous metal materials in China. Main usage of copper pipes [...]
Thick-walled brass tubes are light in weight, good in thermal conductivity and high in cryogenic strength. They are often used to manufacture heat exchangers (such as condensers) and to assemble cryogenic pipes in oxygen plants. Copper pipes with small diameters are often used for transporting pressurized liquids (such as lubrication systems, oil pressure systems, etc.) [...]
Thick-walled brass pipes have strong and corrosion-resistant characteristics, and become the first choice for modern contractors to install water pipes, heating and refrigeration pipes in all residential commercial buildings. Thick-walled brass pipes have many advantages: they are strong and have high strength than common metals; they are also more flexible, torsional, crack-proof and fracture-proof than [...]
Copper pipe gas welding materials and preparation work include welding wire, organic flux, cleaning tools, etc. 1. Welding wire should be used as filler metal in gas welding of welding wire; one is the welding wire containing deoxidizing elements, such as wire 201 and 202; the other is the general cut of copper wire and [...]
Copper pipe gas welding equipment includes oxygen cylinder, acetylene cylinder, decompressor, temper insurer and torch. 1. Oxygen cylinder volume 40L, working pressure 15MPa, the appearance of sky blue, black paint "oxygen". Oil contamination should be prevented in storage and use; it should be placed smoothly and reliably, and should not be mixed with other cylinders; [...]
Processing Technology of Air Conditioning Copper Pipes At present, casting-rolling process is the mainstream process for air conditioning copper pipes. Detailed steps of this process are described as follows: 1. As-cast billet is obtained by horizontal continuous casting of electrolytic copper sheet. 2. Melting and casting: As-cast billet is obtained by three-roll planetary rotary rolling. [...]
What's the difference between hard copper tube and soft copper tube? Copper tube, a kind of non-ferrous metal tube, is a seamless tube pressed and drawn. It is characterized by light weight, good thermal conductivity, high low temperature strength and corrosion resistance. Because of these excellent properties of copper pipes, the use of copper tubes [...]
Classification and Welding Characteristics of Copper and Copper Alloys 1. Pure copper: Pure copper is often called purple copper. It has good electrical conductivity, thermal conductivity and corrosion resistance. Pure copper is represented by the letter + T} (copper), such as Tl, T2, T3, etc. Oxygen content is very low, pure copper less than 0.O1% [...]
The real-time report of brass tube inventory was updated. The central bank released financial data for the first quarter and March. In the first quarter, RMB loans increased by 5.81 trillion yuan, an increase of 952.6 billion yuan over the same period last year. The cumulative increase of social financing scale was 8.18 trillion yuan, [...]
Why are brass pipe rust when exposed to the sun? Brass pipe: Seamless pipe made of brass by restriction and drawing is a kind of non-ferrous metal pipe. Brass code: The symbol (Chinese phonetic alphabet) "H" is chosen to indicate. The content of "H" and basic element copper in brass indicates that 68 copper is [...]
