The simplest way is to use copper cleaner. Brass， red copper， bronze etc. can be used. Oil stains， fingerprints， oxide layers， etc. on the surface can be cleaned with copper cleaner first.
상술한 바를 종합하면， 현재 현물 시장 가격이 상인들이 예상한 겨울 창고 저장 가격보다 훨씬 높은 등 요소의 영향으로철광석 가격이 상승함에 따라 철광석 가격지수는 한때 달러 아래로 떨어져 수입 광석의 출하 열기를 떨어뜨렸다.이밖에 환경보호검사가 더욱 엄격해져 일부 국내광산의 공급이 큰 영향을 받았다.현재 국내 광산의 가동률은 이전 최고치보다 % 포인트 낮아 앞으로 더 떨어질 것으로 보인다.
러시아 연방동관을 어떻게 저장합니까?구리 파이프의 우수한 성능을 환경으로부터 보호하기 위해 우리는 다음과 같은 몇 가지를 해야 한다. 첫째， 적합한 장소와 창고를 선택하고 주변 환경을 건조하고 통풍시켜야 한다.산， 알칼리， 소금， 시멘트 등과 함께 쌓아서는 안 된다.
In 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 the short-term iron ore market may lack upward momentum.
이스라엘Disadvantages: Due to loose tissue and high pressure resistance， the pipe is only used to produce small air conditioning copper rods.
방습지로 싸서 방습을 보호할 수 있다.그것은 또한 어느 정도 산화를 방지할 수 있다.균열이 발견되거나 심하게 부식되면 반드시 격리시켜야 한다.
For small diameter pipes， when using filler metal， 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，러시아 연방GCR15 합금 원강， accounting for more than half of the total consumption. Used for various cables and wires， switches and printed circuit boards; In the manufacture of machinery and transport vehicles， it is used to manufacture industrial valves and accessories，러시아 연방201 스테인리스 강판， instruments， sliding bearings， molds， heat exchangers， pumps， the following three methods are generally used to produce materials. The copper tubes produced by these three methods are not only very good in performance， but also very convenient to operate. There are three production methods for copper tube， so what are the three production methods for copper tube?
The conductive production of copper tube is the latest method for this method. It is the production of nanocrystalline copper materials with conductivity. Because this raw material is very special， it is a copper material produced by using nanotechnology，러시아 연방스테인리스 강판， and copper ions can be separated by conductivity， so that copper tubes can be produced with the separated copper ions. This method is very complex， so only advanced foreign countries can use this production method.
용접 공구의 드라이어는 열이 지나치게 집중되지 않도록 너무 작아서는 안 된다.
관리 하 다.압출법: 본 생산 방법은 정련 후 구리 주괴를 주조하고 차 가열 후 대형 압출기로 구리 파이프를 압출한다.
이러한 문제를 해결하기 위해 실리콘을 함유한 용접사는 일반적으로 용접에 사용되는데， 실리콘은 용접지 표면에 촘촘한 실리콘 막을 형성하기 때문에 아연의 증발을 방해하고 수소의 침입을 방지할 수 있다.
용접할 때 드라이어는 납관에 수직해야 하고 화염은 련속 이동하여 국부적인 과열과 용접제가 충전금속을 첨가하기전에 탄화되는것을 방지해야 한다.
러시아 연방파이프를 카드 상단에 삽입하고，e 파이프의 튜브를 이음매에 고르게 바르고 파이프가 베어링 바닥에 삽입되었는지 확인한 다음 여분의 용접제를 닦아내고 이음매를 조립하고 가열할 수 있습니다.
Among the three production methods of copper tube， the oxidation method is the most. Because as long as the metal copper is oxidized by the anode and the copper ion of the anode is attached to the tube material， the copper tube can be produced. Thisthod is also the most common method to produce copper materials. It has not only been used for a long time， but also has a mature technology， which is to produce copper tubes through oxidation reaction. This production method is the main production method of copper tubes in China.
The second of the five application fields of red copper plate T red copper row and red copper tube: copper is widely used in the chemical industry to manufacture vacuum vessels， distillation pots， brewing pots， etc.