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，임 학 평304 스테인리스 강판， due to the high inventory level， 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.
동관의 응용 동관은 일반적으로 환열 설비에 사용되며， 산소 제조 설비의 저온 파이프도 사용할 수 있다.비교적 얇은 일부 동관은 일부 가압액체를 수송하는데 사용할수도 있고 계기중의 압력측정관으로 사용할수도 있다.또한 구리 파이프는 다른 금속과 달리 상대적으로 견고하고 쉽게 부식되기 때문에 현재 많은 건물에서 사용되는 수도관과 냉동 파이프는 구리 파이프를 사용합니다.
임 학 평How to make copper tubes shine copper is stable in dry air， but the surface of power copper tubes is easy to be corroded in humid air， generating a layer of green material， commonly known as "copper green" and its main component is "basic copper carbonate". So， how to remove verdigris? We can remove the verdigris by mechanical friction， but this is not only troublesome， but also will damage the surface of the bronze. Heres a good way to remove verdigris. Use a measuring cylinder to measure ml of concentrated ammonia water and put it into a beaker， then add ml of distilled water stir it with a glass rod to prepare ammonia solution， that is， wipe copper water. Copper rubbing water can react with verdigris to form soluble blue copper ammonia complex， thus removing the verdigris. In order to improve the effect of removing verdigris from the copper polishing water， chalk or talcum powder can also be mixed into the copper polishing water， which can increase the mechanical friction fully expose the deep layer of copper rust， ensure the complete reaction of verdigris and ammonia， and make the copper surface smooth and bright. Dip cotton in copper water and repeatedly scrub copper products with copper rust. Soon， the copper rust disappeared from the surface of the bronze ware， and the copper products showed a bright metallic luster again， while the cotton was dyed blue. When the verdigris on some copper products are not easy to remove， soak them in the copper scrubbing water for a while， and then scrub them with cotton dipped in the copper scrubbing water.
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.
카 헬 라 만 말 라 시Red copper plate has ductility. Pure copper， which is as big as a drop of water， can be pulled up to two kilometers of thin wire or rolled into a transparent foil larger than a bed. The most valuable property of red copper row is that it has a very good conductive ， second onlyver in common metals. But copper is much cheaper than silver， so it has become the "protagonist" of the electrical industry.
The application of copper tube The copper tube is generally used in the heat exchange equipment， and the low-temperature pipeline in the oxygen production equipment can also be used. Some relatively thin copper tubes can be used to transport some pressurized liquids， and can also be used as pressure measuring tubes in instruments; In addition， the copper pipe is relatively firm， unlike other metals， which are easily corroded， so now many water pipes and refrigeration pipes used in buildings will choose to use the copper pipe.
With the advent of heating season， the raw material support of red copper row is weak. Under the influence of heating season and environmental protection production restriction， steel mills in some regions began to implement the production restriction measures for blast furnaces in heating season， and the demand for iron ore was weakened. In addition， the production restriction policy was issued in Tangshan today. From : on October to : on October ， the production restriction measures specified in this Notice were implemented.
용접할 때 드라이어는 납관에 수직해야 하고 화염은 련속 이동하여 국부적인 과열과 용접제가 충전금속을 첨가하기전에 탄화되는것을 방지해야 한다.
Copper pipes of different models shall be stacked separately.
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.
검사 기준파이프 벽돌 가격의 조정과 인하는 주로 환경 보호의 생산 제한과 온도와 날씨에 대한 수요가 부진하기 때문이다.최근 단말기 수요도 기온이 뚝 떨어지면서 위축돼 약세 진동을 일으키고 있다.창주 현지 무역상과의 소통에 따르면 지난주의 각종 좋은 소식으로 지난 주 동안 창주 열팽창관의 출하량이 증가해 비수기에 더 좋고 일부 규격의 출하량도 개선됐다.그러나 중소형 파이프라인 시장의 거래 분위기는 여전히 냉랭하고 수요는 점차 둔화되고 있다.상술한 바를 종합하면， 최근 창저우의 빈틈없는 강관 시장 가격은 안정 속에서 약해질 것으로 예상된다.
월 일， 창주 동봉시장의 가격은 평온했다.Lange 철강 회사의 모니터링 데이터에 따르면;s 클라우드 비즈니스 플랫폼， 린이가 생산한 * mm 냉발강 시장 가격은 위안， 린이 * mm 시장 가격은 위안， 건룡 * mm 시장 가격은 위안， 원화 * mm 가격은 위안， 펑넝 * mm 시장 가격은 위안， 바오강 * mm 시장 가격은 위안거대 에너지 열팽창 * mm의 시장 가격은 위안이다.
Disadvantages: low output， 허난，임 학 평6063 알루미늄 바， 랴오닝， 산둥 등 지역의 잉크 주철 원가가 다소 증가하였다.이밖에 하류의 수요가 점차 방출됨에 따라 강철공장의 재고량이 크지 않아 강철공장이 륙속 가격을 인상했다.산동， 강소， which has good processing characteristics and can be punched， bent and other process design requirements. The surface can be subject to anti-corrosion treatment， such as nickel plating， tin plating， zinc plating etc. The surface anti-corrosion can reach hours of fog test. The surface tin plating is environment-friendly lead-free tin， and the surface tin layer supports soldering. T degreased copper tube is mainly used for communication cabinet， transformer， charging pile， box type substation and other electrical facilities. The copper bar is harder than the plastic pipe and has the degree of common metal (the strength of the cold drawn degreased copper pipe is equivalent to that of the steel pipe with the same wall thickness). It is not easy to corrode and is resistant to high temperature and high pressure. It can be used in various applications. The main material of copper bar is copper. The melting point of copper is as high as ℃， and the temperature of hot water can be ignored for degreased copper pipe， so as long as it is used correctly， there is no need to worry about safety. When choosing to decorate the house， few people ask about the water supply pipe of the house. In fact， and more than % of the water will disappear after entering the degreased copper tube for hours. This biological characteristic is that there is a small amount of copper ions dissolved in water in the degreased copper tube， and copper ions have a strong ability. Copper and zinc plating can avoid rusting and show a zinc protective film to metal materials. The conductive metal material repair and color enhancement care agent I can generate the thickness of the metal material epoxy protection layer and the pipelincathodic protection layer， which can resist extreme weather and is suitable for the long-term surface of metal materials. The actual effect of salt and water corrosion resistance is good. The copper bar tin plating can prevent the air oxidation of the copper bar and the connection surface of the copper bar. In addition， the melting of metal tin and copper will produce aluminum alloy， which will improve the adhesion of copper strip coating. In addition， the conductivity of metal tin is good. The purpose of copper and tin plating: effectively prevent copper from becoming verdant due to moisture，임 학 평6061 알루미늄 바， and also prevent copper from oxidizing/sulfurizing and blackening and affecting electricity. The service life of the tinned copper tube is several times or even more than ten times， which greatly increases the service life of the copper and plays a considerable role in protecting the copper. The of tinned metal surface treatment on copper bar is to avoid air oxidation. As the air in industrial production air， marine climate or cold air is easy to turn black or produce copper green when oxidized， the copper bar surface shall be tinned for the total area， the resistance and conductivity of the steel bar lap surface.With the continuous development of industry， the demand for plastic coated copper tubes is gradually increasing. Then how to apply wood grain paint on alloy pipes. Wood like paint is a kind of wood like paint. It is used for spraying plastic coated copper pipe and its process flow. Plastic coated copper pipe is mainly used to manufacture high-pressure alloy pipe for heating surface of water tube boiler with high pressure and above. In the morning market， the mainstream spot price quoted by Lianzhong was - yuan/ton， and the tax inclusive base price quoted by Hongwang and Chengde was - yuan/ton. On a month on month basis， part of the producing areas recalled yuan， and the mainstream tax inclusive base price in the market changed from strongeak in the - plastic coated copper pipe supply and demand relationship. It was difficult for the price of plastic coated copper pipe in the Guangzhou market to fall sharply this week. Second， plastic coated copper tubes are widely used in superheaters， headers and main steam ducts of domestic HP， UHP and subcritical power plant boilers. Third， large diameter pipes are mainly used as headers and main steam pipes with steam parameters below ℃.
[] Welding process of copper pipe Clean the end and seven ports of steel pipe with steel wool. Do not use abrasive cloth or abrasive paper to clean， because it will affect the clean interface and result in poor welding effect.
임 학 평상술한 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.
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， accounting for more than half of the total consumption. Used for various cables and wires， 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， pumps， etc.
연동관의 생산 방법은 경동관과 기본적으로 같다. 즉 경동관에 비해 퇴화 공정을 증가시켰다.동관의 퇴화는 그들이 고온로에서 하소하여 동관의 원소의 배열을 바꾼다는 것을 의미한다.그러나 불이 꺼지면 구리 파이프가 부드러워져 더 쉽게 구부러집니다.이런 방식으로 생산된 동관을 소프트 동관이라고 한다.