The price of tube billets was adjusted and lowered mainly due to the production restriction of environmental protection and the weak demand for temperature and weather. Recently， causing a weak shock. According to the communication with local traders in Cangzhou， various good news last week led to the shipment of thermal expansion pipes in Cangzhou in the past two weeks， which is better in the off-season， and the shipment of some specifications has improved. However， and the demand is slowing down gradually. To sum up it is expected that the market price of Cangzhou seamless pipe will be stable and weak in the near future.
용접할 때 드라이어는 납관에 수직해야 하고 화염은 련속 이동하여 국부적인 과열과 용접제가 충전금속을 첨가하기전에 탄화되는것을 방지해야 한다.
코펜하겐The evaporated zinc is immediately turned into zinc in the air， forming white smoke， which brings great difficulties to the operation and affects the health of welders. Therefore， in the places where decorative brass pipes are welded， ventilation and other protective measures should be strengthened. The poor weldability of brass will cause problems such as pores， cracks， zinc evaporation and so on.
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，코펜하겐알루미늄 청동판， the market price of * mm in Juneng is yuan，코펜하겐2205 스테인리스 강판， the market price of * mm in Baotou Steel is yuan， and the market price of * mm in Juneng thermal expansion is yuan.
운남 변 빌딩Disadvantages: Due to loose tissue and high pressure resistance the pipe is only used to produce small air conditioning copper rods.
antages: low production cost and high production efficiency.
To sum up， the market in Northeast China is generally pessimistic based on the medium and long-term policies and the general environment， as well as the current inventory level in Shenyang. The low inventory level of copper platoon makes the whole market lack of motivation. The copper bar market in this city has stopped this year， and it is hard to improve in the short and medium term. On the whole， the market price of Shenyang copper bars may be stable tomorrow.
오늘 아침 국내 동봉 가격이 하락했다.Lange Steel의 모니터링 데이터에 따르면;중국 주요 도시의 * mm 열연대강 평균 가격은 위안으로 어제보다 원 하락했다.선물 가격이 변동하여 현물 시장 제조업체의 가격이 오늘 약간 하락했다.피드백에 따르면 시장은 주로어제를 보면 전체 거래가 막히고 주류 제조업체들이오늘 가격이 하락했다.
증발된 아연은 공기중에서 즉시 아연으로 전환되여 백연을 형성하여 조작에 극히 큰 어려움을 가져다주고 용접공의 건강에 영향을 준다.그러므로 장식된 동관을 용접하는 곳에서는 통풍과 기타 보호조치를 강화해야 한다.황동은 용접성이 떨어지면 기공， 균열， 아연 증발 등의 문제를 초래할 수 있다.
Copper tube is a kind of nonferrous metal tube， which is pressed and drawn seamless tube. The copper pipe has good thermal conductivity， and is solid and corrosion resistant. It will not crack when compared with the ambient temperature， so it becomes the first choice for modern contractors to install the water pipe， heat supply pipe and refrigeration pipe in all residential commercial houses.
탁월 함 을 추구 하 다일반적으로 산소아세틸렌을 기원으로 사용하고 액화석유가스 용접도구를 사용하여 가열한다.용접 도구의 용접봉은 이음매를 향하고 계속해서 전체 이음매를 가열해야 한다.이것은 과도한 국부 가열을 피할 것이다.
방습지로 싸서 방습을 보호할 수 있다.그것은 또한 어느 정도 산화를 방지할 수 있다.균열이 발견되거나 심하게 부식되면 반드시 격리시켜야 한다.
Three of the five major application fields of copper plate， 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.
동판， 동봉， 동관의 다섯 가지 주요 응용 분야 중 다섯 가지: 동은 의약에 쓰인다.세기 년대에 중국 의학 발명가 류퉁칭과 류퉁러는 구리가 매우 강한 s를 가지고 있음을 발견하고 해당하는 &를 개발하는 데 성공했다.quot；암 억제 및;“；，이것은 머지않아 성공할 것이다.
지식.It can be wrapped with moisture-proof paper for moisture-proof protection. It can also prevent oxidation to a certain extent. If cracks or serious corrosion are found， they must be isolated.
In addition， it is very strong not easy to be corroded， and can adapt to various environments. It can be used normally at low and high temperatures， so copper pipes need to be selected many times in other places.The color change on the outer surface of the copper tube is difficult to control due to environmental factors. To prevent moisture absorption on the surface and core of the annealed brass tube， a constant temperature and humidity packaging room can be built. Packaging in the packaging room can avoid the color change on the outer surface of the copper tube. However， it is not easy to control the situation that occurs in the processing process. The cost of ensuring constant temperature and humidity in the whole workshop is too high. The following measures are taken to control the process materials: In the season of high temperature and humidity， the amount of oil coating on the surface of copper tubes can be increased to form an oil film on the surface of copper tubes， which can isolate water vapor and corrosive gases， and prevent the corrosion of the surface of copper tubes; The humidity in the air at night is high， and the outer surface of the copper pipe is prone to corrosion and discoloration at night. Closing the doors and windows of the workshop at night can make the situation worse; After the coil surface is cleaned in the rewinding process， the coating amount of passivation agent on the copper tube surface is increased. After blanking in the rewinding process， plastic bags shall be added to the whole support material to further reduce the contact between the copper pipe and the air and prevent the surface of the copper pipe.
동관은 일종의 비철금속관으로서 압제하고 늘어나는 무봉관이다.동관은 열전도성이 뛰어나고 견고하며 부식에 강하다.환경 온도에 비해 갈라지지 않기 때문에 모든 주택 분양주택에 수도관， 난방관， 냉동관을 설치하는 것이 현대 하청업체의 우선순위가 되었다.
코펜하겐Disadvantages: Due to loose tissue and high pressure resistance，코펜하겐Q345D 합금 원강， the pipe is only used to produce small air conditioning copper rods.
When stacking， it shall be stacked reasonably and placed first.
동판， 동봉과 동관의 다섯 가지 주요 응용 분야 중 네 가지: 동은 건축업에서 각종 파이프， 파이프와 장식 장치로 사용된다.