In the morning trading today the price of domestic copper bar fell. According to the monitoring data of Lange Steels cloud business platform， the average price of * mm hot rolled strip in key cities in China is ， down yuan from yesterday. Futures prices fluctuated， and the prices of spot market manufacturers eased slightly today. According to the feedback， the market was mainlysee yesterday， which caused the overall transaction blocked，엉겅퀴.동판， and the mainstream manufacturers prices fell today.
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.
엉겅퀴.내부 지름이 같은 내부 스레드 파이프의 경우동관은 미국 금속이 필요 없다.
The price of pig iron market rose by - yuan this week and the transaction was fair. With the increase of coke price，엉겅퀴.12Cr1MoV 합금 강판， the cost of ductile iron in Shanxi， Liaoning， Shandong and other regions has increased. In addition， with the gradual release of downstream demand， and iron plants have successively raised their prices. There are few iron foundries in Shandong， Jiangsu， Hebei and Shanxi， and the inventory remains low. As the coke price rises and the cost increases， the price of iron foundries rises again.
글래스 고The ex factory price of Linyi Pipe Factory has decreased by yuan for cash Baocheng ( * mm， the same below) yuan， yuan for Jin Zhengyang yuan， yuan for Ruigang Lianlian， yuan for Baoda yuan， yuan for Meixin yuan， and yuan for Taizong yuan.
Save materials and total cost， stability and performance， and can save maintenance.
오늘날 벽돌의 가격은 높아졌다 낮아졌다 한다.현재 강흠열간 압연은 위안， 연주 위안은 위안， 동방열간 위안은 위안， 노력열간 압연은 위안은 위안， 천강열간 압연은 위안 하락한다안강은 원 하락하여 월 중순에 생산을 중지하였고 위강열연은 원으로 원 상승하였으며 련주 원으로 원 상승하였고 회강 원으로 원 상승하였으며 중천 원， 장강 원， 릉강 원이였다.
Advantages and scope of application of copper tube ground heating At present， ground heating is not only a comfortable heating method， but also a symbol of modern life quality. More and more houses， public buildings， sports facilities， industrial facilities and other places begin to use ground heating radiator， which is an important part of ground heating. Due to the corrosion resistance of copper， copper tubes are selected as the main material of radiator in many places.
To prevent core problems of copper tubes， the outlet tempmperature of copper tubes should be well controlled. The cooling capacity of the annealing furnace in the cooling stage should be improved by equipping a refrigeration unit for the annealing furnace， so as to ensure that the outlet temperature of copper tubes does not exceed ℃. By controlling the outlet temperature of copper tubes， the problems of the core of coil tubes and the inner wall of the purging inlet end can be solved.
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.
품질 위험The copper bar market declined steadily this week， with a decline of - yuan. Due to low pig iron inventory， some steel mills in Jiangxi have resumed purchasing recently， but the purchasing volume is not large. The purchase price of pig iron in Yunnan steel plants was slightly increased to ensure the purchase volume due to the low purchase price of pig iron in the early stage. Recently， the steel market has been in shock and adjustment， and the merchants are unstable. Steel mills in Hebei， Tianjin and other regions have stopped producing pig iron for steelmaking. Now， it is mainly expected to make inquiries. However， due to the lower price of raw materials， the price of iron mills has been lowered.
So far as the storage method of copper materials is concerned， we should properly keep the copper products we buy，엉겅퀴.Q345D 합금 원강， extend the service life of copper and ensure its performance to avoid unnecessary losses.
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.
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.
신상 품월 일， 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 위안，거대 에너지 열팽창 * mm의 시장 가격은 위안이다.
How 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， 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， 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， 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.
In addition， it is 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 for many times in other places.
엉겅퀴.After the pipe is cleaned the welding flux and flux shall be immediately applied to the interface and the bayonet clearance. Sufficient flux shall be thinly coated on the mating surface and assembled immediately， so that dust and dirt will not pollute the capillary gap.
동판， 동봉과 동관의 다섯 가지 주요 응용 분야 중 네 가지: 동은 건축업에서 각종 파이프， 파이프와 장식 장치로 사용된다.
방습지로 싸서 방습을 보호할 수 있다.그것은 또한 어느 정도 산화를 방지할 수 있다.균열이 발견되거나 심하게 부식되면 반드시 격리시켜야 한다.