The market price of Zhengzhou copper bars is basically stable， and the shipment is not good. In terms of tube blank: today， Shandong Luli tube blank slightly reduced by yuan， and the current mainstream ex factory price is - yuan. In terms of pipe plant: Linyi Pipe Plant locked the price for a week. With a stable market mentality， the factory price of hot rolled seamless pipes is now between - yuan. On the market side: with the arrival of the off-season， traders generally ship goods at a high price. Replenishment is mainly to maintain the existing inventory， and there is no large replenishment plan. The demand is sluggish， and the market price of Zhengzhou copper bar is expected to be stable and declining.
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.
마르세유.Four in one formula and process conditions Preparation of solution Take formula as an example: mix the calculated amount of water for zinc oxide into a paste， slowly add it into the calculated amount of phosphoric acid under stirring until it is completely dissolved， then add zinc nitrate and tartaric acid， dilute it with water to / of the total volume add sodium alkosulfonate and OP emulsion， and stir to make it completely dissolved. Then add chromium dihydrogen phosphate dissolved in dilute phosphoric acid and add titanium sulfate. After all materials are added， dilute them to the total volume， stir them to make the solution even， cool them to room temperature， put a large amount of iron filings in the solution，마르세유.H65 황동판， and soak them for - days to make them contain enough ferrous ions. When the content of ferrous ion reaches above g/L， adjust the free acidity and total acidity of the solution to the specified value， and then the solution can be used at elevated temperature. When the ferrous ion reaches the above value， the phosphating speed is fast， the solution is stable， and the phosphating film is fine and dense. During operation， attention shall be paid to controlling the temperature. If the temperature is higher than ℃， the degreasing technology of degreased copper pipe. How to make degreased copper pipe? The process flow of degreased copper tube? What are the characteristics of degreased copper tubes? Use of degreased copper tube? There are too many questions. Lets solve them at once. Everyone knows the copper tube. Nitrate reacts easily. The heater should be installed on the two walls of the tank， to prevent local overheating. Stainless steel pipe or iron pipe should be used for heater， and lead pipe or copper pipe should not be used to avoid contamination of solution by impurities. What is degreased copper pipipe? "The advantages of degreased copper pipes comprehensive treatment of grease， rust removal phosphating and passivation are described. This comprehensive treatment process can simplify the process， reduce the work area， save equipment costs， improve labor productivity and reduce costs. This method can only be used in the occasions where the requirements for coating quality are not high.However in actual production， due to the amount of oil contamination，마르세유.7075 알루미늄 튜브， light and heavy rust， the consumption rate of each component in the solution is different， so attention should be paid to adjustment and control to maintain its due role. What is the degreasing copper tube? "I have roughly known the degreasing methods of degreasing copper tubes: solvent degreasing， alkali degreasing， ultrasonic degreasing， high pressure hot water degreasing， electrolytic degreasing， etc. Solvent degreasing: use degreasing solvent to dissolve the oil on the surface of red copper pipe， volatilize， collect and reuse the volatile solvent， and separate the pollutants from the circulation system. This method was used in the early stage， which has problems such as low cleaning efficiency， and environmental pollution. In recent years， many kinds of surfactants have been developed. The lipophilic group of surfactants can help to dissolve oil in water to realize degreasing. Alkali degreasing: Alkali degreasing is a complex chemical physical process. In addition to saponification reaction， there are sometimes emulsion reaction and adsorption reaction. Typical saponification reaction formula is as follows: RCOOH+NaOHRCOONa+HO At present， industrial degreasers are composite reagents， and the solution temperature is ℃. Ultrasonic degreasing: ultrasonic degreasing is to degrease the upper and lower surfaces of red copper pipes by using ultrasonic to generate high-speed vibration， whichtly used for monomer and irregular shaped components. High pressure hot water degreasing: without degreasing agent， heat the deionized water to ℃， and spray it directly to the surface of red copper pipe for cleaning under the pressure of about bar. Electrolytic degreasing: electrolytic degreasing， using the red copper tube as the cathode to generate H， which will scour the oil stain on the surface of the red copper tube; The O generated by the anode is in atomic state and has strong oxidation capacity， which can improve the degreasing effect. Therefore， the problem that alkali spraying and brushing cannot fully contact the micro concave part of the surface is solved. Generally， the cleaning effect of alkali degreaser spraying or high-pressure hot water degreasing plus brushing can meet the requirements of most users. If there are special requirements， multiple methods can be used together. According to practical experience， the degreasing effect of various degreasing methods (one side of the copper tube) is as follows: alkali degreaser spray plus brushing: mg/m alkali degreaser brushing plus electrolytic degreasing: mg/m ultrasonic wave: mg/m high-pressure hot water degreasing: 안 탈리 아The excellent performance of copper pipe The copper pipe has the characteristics of and， which makes it a suitable choice for modern contractors to install water pipes， heating and cooling pipes in all residential commercial housing. 자재 및 총 비용，마르세유.알루미늄 막대， 안정성 및 성능 및 유지 보수 비용 절감 현재의 전체 가격차를 감안할 때， 오늘 현지 동봉 가격은 계속 높은 수준으로 상승하고 있지만， 화동 지역 이외의 지역은 뚜렷한 후속 추세가 나타나지 않고 있으며， 현지 가격은 여전히 동북과 화중 지역과의 가격차의 우세를 가지고 있다.생산 제한의 영향으로 현지의 후속 상품량이 비교적 적기 때문에， 현지의 재고 압력은 더욱 낮아질 것이며 동봉 가격의 지탱은 여전히 강하다.그러나 현재 국내 부동산 통제는 여전히 강화되고 있다.시장 & # ;미래의 수요에 대한 시장의 예상이 약화되고 있습니다.오늘 심양 동봉의 시장 가격이 안정되어 출하량이 좋지 않다.
When 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.
구리 파이프는 설치 시 운송 비용이 적게 들고 유지 관리가 용이하며 공간을 적게 차지할 수 있습니다.
[] 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.
품질 위험Save materials and total cost， stability and performance， and can save maintenance.
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， 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.
If the corrosion on the copper surface is found to be slight it can be erased with linen copper wire， but it is not recommended to apply oil for preservation.
적동 재고는 지속적인 하락세를 끝낼 수 있다.철강 기업의 생산 제한 강도가 높아지고 수요 압력이 커짐에 따라 철광석 항구의 재고의 지속적인 감소는 끝날 수 있다.또한 **의 최신 통계에 따르면 제철소의 철광석 수입 가용일수는 일로 국경절 전보다 하루 줄어 사상 최고치를 기록했다.제철소는 현재 철광석 재고가 기본적으로 생산 요구를 만족시킨다고 밝혔다.향후 감산 및년 월말까지 산동성은 이미 만톤의 생철과 만톤의 조강의 생산능력과잉문제를 해결했으며 모든 생산능력제거설비는 이미 페쇄되고 퇴출되였다.월 일， 한단시발전개혁위원회는"년 한단시 과잉철강생산능력제거계획"을 발표했다.통계수치가 보여준데 따르면 년 한단의 제철능력은 만톤이고 제강능력은 만톤이다.
제도.림기관공장의 출고가는 현금보성 ( * mm， 김정양 원， 서강련련 원， 보달 원， 미신 원， 태종 원이 각각 원， 원 하락했다.
As theation effect of copper material on the agent is weak， the dissolved oxygen and air bubbles in it will corrode it.
파이프 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.
마르세유.구리 표면을 다시 밝게 만들고 싶다면 구리 점 용액으로 광택을 낼 수 있다.그것은 구리 표면을 더 밝게 할 뿐만 아니라 구리 표면의 녹과 산화층을 빠르게 제거하고 구리 자체의 광택을 회복 할 수 있습니다.
월에 국내 중후판 가격이 대폭 하락했다.월 일까지 주요도시의 일반탄소판가격센터는 이미 으로 내려가 월말에 비해 톤당 원 하락했다.이달 초， 거시적인 나쁜 소식과 최근 기본면이 좋지 않은 영향으로 시장심리상태가 비관적으로 전환되였고 일부 거래원들은 저가로 출하했다.시장재고가 상승하고 재고압력이 높으며 재고부족현상이 소실되고 시장거래분위기가 랭담하며 수요표현이 지속적으로 하락하고 현물가격이 압력을 받아 하락하고있다.
Strong connection firmness of copper pipe: the connection between copper pipe and copper fittings is strong.