Disadvantages: low output， high production cost and high price. Extrusion copper tube process is a stable and excellent copper tube production method at home and abroad at present. Only the copper tubes produced by this process are more suitable for the field of heating and ventilation， which is the development direction of copper tube industry in the future.
The production method of soft copper tube is basically the same as that of hard copper tube， that is， the annealing process is added compared with the hard copper tube. Annealing of copper tubes means that they are calcined in a high temperature furnace to change the arrangement of the elements in the copper tubes. However， after annealing， the copper tubes will become soft， which makes it easier to bend. The copper tubes produced in this way are called soft copper tubes.
델 루 치 코 프 카용접 후， ~ ℃ 에서 퇴화하여 & amp;quot；자열 & amp;quot；압력.
Red copper inventory may end the trend of continuous decline. With the increase of production restriction of steel enterprises and the pressure of demand， the continuous decline of iron ore port inventory may end. In addition， according to the new statistics of * *， the available days of imported iron ore of steel mills are days， which is one day lower than that before the National Day， and is on the high side of history. The steel mill said that at present， the steel mill is not willing to replenish the inventory.
호 문 내Advantages and scope of application of copper tube ground heating At present， ground heating is not only a comfortable heating method， but also a symbol of modern life quality. More and more houses， public buildings，델 루 치 코 프 카구리 알루미늄 복합 배출， industrial facilities and other places begin to use ground heating radiator， which is an important part of ground heating. Due to the corrosion resistance of copper， copper tubes are selected as the main material of radiator in many places.
The room temperature tensile strength of the annealed red copper sheet is ~ kgf/mm， the elongation is ~%， Mexican scientists also found that copper has a . Recently， British researchers found that copper has a strong bactericidal effect. It is believed that in the near future， copper will make great contributions to improving human health. Copper plate T is named after its purple color. It is not necessarily pure copper， sometimes it also involves a few deoxidizing elements or other elements to improve raw materials and s， so it is also included in copper alloys. The processed materials of Chinese cor plate can be divided into four categories according to the composition: ordinary copper plate (T， T， T， T， oxygen free copper plate (TU， TU and high-purity， vacuum oxygen free copper)， deoxidized copper plate (TUP TUMn)， and special copper plate (arsenic copper， tellurium copper， silver copper) with a few alloy elements added. The conductivity and thermal conductivity of copper plate are second only to silver， and are widely used to manufacture conductive and thermal conductive devices. The red copper belt has outstanding corrosion resistance in the atmosphere， sea water， some non oxidizing acids， alkalis， salt solutions and a variety of organic acids (aic acid， citric acid)， and is used in the chemical industry. In addition， the red copper plate has outstanding weldability and can be made into various semi products and products through cold and thermoplastic processing. In the s， the output value of copper plate exceeded that of other copper alloys.
퇴화 적동판의 실온 인장 강도는 ~kgf/mm이고 신장률은 ~%이며 부씨경도(HB)는 ~이다
에어컨 동관 생산 기술상 납법: 이런 생산 방법은 동관이 직접 용해된 후 구리를 전해하는 것이다.
Three of the five major application fields of copper plate，델 루 치 코 프 카알루미늄 냉동창고， copper bar and copper tube: copper is used to manufacture， and gun parts in the national defense industry. Every million rounds of copper are produced， - tons of copper are needed.
백과 지식When welding， just add enough filler metal to fill the capillary gap. Too much filler metal will only form a ball at the bottom of the joint or run into the pipe.
Later， Mexican scientists also found that copper has a . Recently， British researchers found that copper has a strong bactericidal effect. It is believed that in the near future， copper will make great contributions to improving human health. Copper plate T is named after its purple color. It is not necessarily pure copper， sometimes it also involves a few deoxidizing elements or other elements to improve raw materials and s， so it is also included in copper alloys. The processed materials of Chinese cor plate can be divided into four categories according to the composition: ordinary copper plate (T， T， T， T， oxygen free copper plate (TU， TU and high-purity vacuum oxygen free copper)， TUMn) deoxidized copper plate (TUP， and special copper plate (arsenic copper，델 루 치 코 프 카304 스테인리스 강판， tellurium copper， silver copper) with a few alloy elements added. The conductivity and thermal conductivity of copper plate are second only to silver， and are widely used to manufacture conductive and thermal conductive devices. The red copper belt has outstanding corrosion resistance in the atmosphere， sea water， some non oxidizing acids， alkalis， salt solutions and a variety of organic acids (aic acid， citric acid)， and is used in the chemical industry. In addition， the red copper plate has outstanding weldability and can be made into various semi products and products through cold and thermoplastic processing. In the s， 현지의 자원이 부족하여 제철소;정액，정액
Save materials and total cost， stability and performance， and can save maintenance.
재산권.중점 분야의 홍동 재고는 지속적으로 상승하고 있지만 전반적인 압력은 크지 않다.현재 주요 배송센터의 전체 재고 상황을 보면 Wu;안， 강음과 락종， 재고수준은 상대적으로 온화하고 시장압력은 상대적으로 작다.Wu 에서수치가 보여준데 따르면 월 일까지 오시 중후판의 총창고보유량，an은 만 톤에 육박하여 매주 톤이 증가한다.월 하순에는 연내에 만t이 떨어져 설 이후 최고 수준보다 만t이 떨어지고 주 연속 상승했다.ov로 말하자면수량은 상대적으로 온화한 수준을 유지한다고 말해야 한다.
Many people do not fully understand the storage method of copper tubes in the process of use and production methods.
If you want to make the copper surface become bright again you can polish it with copper point solution. It can not only make the copper surface brighter， but also quickly remove the rust and oxide layer on the copper surface to restore the luster of the copper itself.
델 루 치 코 프 카If the corrosion on the copper surface is found to be slight， but it is not recommended to apply oil for preservation.
On November ， the market price of Cangzhou copper bar was stable. According to the monitoring data of Lange Iron and Steels cloud business platform the market price of * mm cold drawn steel produced in Linyi is yuan， the market price of * mm in Linyi is yuan， the market price of * mm in Jianlong is yuan， the market price of * mm in Yuanhua is yuan， the market price of * mm in Juneng is yuan， the market price of * mm in Baotou Steel is yuan， and the market price of * mm in Juneng thermal expansion is yuan.
기타 지역의 자동봉은 기본적으로 당산의 가격추세를 따르는데 그중 강소제철소의 입찰가격이 더욱 높아지고 대부분 하류가격이 요구되여 총체적인 시장거래는 공평하다.오씨강철공장;앤은 주문을 받는 데 제한을 받아 시장 자원이 부족하다.대부분의 상인들은 팔기를 원하지 않는다.산시 (山西) 성의 벽돌 시장은 가격이 각기 다르기 때문에 교역을 달성하기 어렵다.하류 고객들은 주문을 받으려는 의지가 약하기 때문에 신중하게 관망하는 태도를 보인다.미리현재 철강 시장은 & amp;quot；황금 제 "；성수기.시장은 미래 시장에 대해 좋은 기대를 가지고 있으며 가격을 지지하려는 의지가 강하다.다음 주에 당산의 주류 강철 벽돌의 가격이 더욱 높아질 것으로 예상된다.
