Because of the characteristics of copper itself， it is very easy to rust and corrode in places with high ambient humihumidity. If we often use it， the problem will be smaller， but if it is placed for a long time， the copper will be damaged. Many people do not know how to treat the copper surface? Now let the staff answer for you.
Advantages of red copper tube Durability: copper has stable chemical properties， integrating cold resistance， heat resistance， pressure resistance， corrosion resistance and fire resistance， and can be used in different environments for a long time.
우 동 타 니수량과 유량으로 인한 부식.
If you want to avoid this kind of situation for a long time， you can choose passivation treatment. In this way， not only is the copper surface serious， it can be cleaned under normal circumstances， but it is not a big problem to keep it in the air for one year or more after ultrasonic treatment and immersion treatment， so this effect is very good.
드레스덴금주(-， 홍동봉의 시장가격이 상승하여 거래가 좋지 않다.지난 주말 사강의 입찰일， 가격이 안정되어 시장을 지탱하였고 주말에는 강판의 상승으로 시장이 일파만파 상승하였으며， 주말에는 각종 선재의 가격도 위안 상승하였다.그러나 거래가 매우 나빠 가격이 상승했다고 보도되었다.)다음 이틀간의 식탁.수요일까지 미래 시장에 대한 부정적인 전망과 오후 나선형 다이빙 중 철강 벽돌의 감소로 인해 시장은 가격을 인하했다.시장가격 변화로 신집은 일 원 상승했습니다.후장에 대해 말하면 비수기가 곧 다가오고 수요가 약화되여 시장의 관망정서가 더욱 짙어지고있다.그러나 겨울이 왔을 때 환경 보호 검사가 점점 더 엄격해져 시장을 지탱했다.예상당분간 메탈 실크는 미약한 방식으로 조정될 것이다.
When stacking， it shall be stacked reasonably and placed first.
In view of the current overall price difference， the local copper bar price continued to rise at a high level today， and the price support of copper bar is still strong. However and the local price still has the advantage of price difference with the Northeast and Central China regions. The local inventory pressure will be further reduced due to the small volume of local follow-up goods under the influence of production restriction， at present， domestic real estate control is still being tightened. The markets expectation of future demand is weakening，우 동 타 니Q345D 합금 원강， and the markets fear of heights appears after the price rises.Today， the market price of copper bars in Shenyang is stable and the shipment is poor.
For small diameter pipes， when using filler metal，우 동 타 니2507 스테인리스 강판， the length of filler metal is allowed to be equal to the diameter of the pipe， which is enough to fill the weld crater. One of the five major application fields of red coppr plate T， red copper bar and red copper tube: copper is the most widely used and used in the electrical and electronic industries， motors and transformers， switches and printed circuit boards; In the manufacture of machinery and transport vehicles it is used to manufacture industrial valves and accessories， instruments sliding bearings， molds heat exchangers， pumps， etc.
When heating steel pipes， the temperature is slightly higher than when heating copper pipes.
In the middle and late ten days， although there were good news such as the rise of futures and the increase of production restriction policy in Wuan region， due to the high inventory level， traders had no desire to increase prices， most of them had shipped goods， and spot prices lacked motivation to rise. The market inventory rose significantly. At that time， the market inventory in Handan reached a high level after the festival. The sluggish demand performance for a long time led to the oversupply of the market， and the continuous rise of inventory led to the empty market mentality.
품질 표준동관은 동관， 비철금속관이라고도 한다.그것은 일종의 압라무봉관으로 무게가 가볍고 열전도성이 좋으며 저온강도가 높고 부식에 견디는 등 특징을 갖고있다.동관은 이런 우수한 재산을 가지고 있기 때문에， 동관의 사용은 매우 보편적이다.경동관과 연동관은 사용 과정에서 어떤 차이가 있습니까?양자는 구체적인 응용 방면에서 어떤 차이가 있습니까?
오늘 개장합니다.비록 지동파 선물의 성과가 평범하지만， 전체 시장은 이미 멈추었다.그 후 시장 심리 상태는 큰 변화가 없었다켄드.가격은 안정적이지만 일부 규격은 협상을 기다려야 하며 협상범위는 ~원 좌우이다.시장의 전반적인 리듬은 안정적이고 냉담하다.겨울 중기에 동북지역의 전체 시장은 전통적인 비수기에 접어들어 전체 시장의 마무리가 무기력하다.모든 회사가 상품을 판매하고 있다.재고 정리로 인해 선양의 재고 수준은 매우 낮으며 모든 건설 현장은 폐쇄되었습니다.저온으로 인한 운송 압력 외에 시장은 참담하다.
자재 및 총 비용， 안정성 및 성능 및 유지 보수 비용 절감
자동관의 장점 내구성: 구리는 안정적인 화학재산을 가지고 있으며 내한，우 동 타 니저합금판， 내압， 내부식과 내화를 일체화하여 서로 다른 환경에서 장기적으로 사용할 수 있다.
실행 기준In consideration of the above factors， more and more steel plants have stopped production since October， and the production limit in Wuan and Tangshan heating seasons has been advanced. In addition， the formal implementation of production limit in "+" urban heating seasons after November by steel enterprises， the demand for iron ore in the future is likely to further deteriorate. The iron ore inventory of the steel plant is relatively high， and the willingness to further replenish the inventory is not strong. In terms of supply， the fourth quarter is generally the peak period for the shipment of imported ores. Although the production of domestic mines has been reduced due to environmental protection， the quantity of * * * is relatively limited. In general， red copper row and red copper tube: copper is widely used in the chemical industry to manufacture vacuum vessels， distillation pots， brewing pots， etc.
우 동 타 니The copper tube shall be heated and welded first， when the filler metal contacts the tube， the filler metal shall melt.
In Jiangyin market， another distribution center， the overall inventory of the current circulation link is about tons， slightly lower than the normal level. At the beginning of this week， the price gap between Jiangyin prices and those in the north has also been able to correspond to the slightly lower circulation inventory. However， from the perspective of the policy port of the steel plant， the overall production situation of Nangang， Hengrun， Dada， etc. is relatively normal， and the amount of resources in the later period remains stable. The overall inventory of Lecong market remains at about to tons， which is a medium normal level， and the recent spot price of Lecong market has a large gap with that of the north.
It has excellent conductivity， thermal conductivity， ductility and corrosion resistance.
